TW201903451A - Optical lens, optical element and optical module and method of manufacturing same - Google Patents

Abstract

An optical lens, an optical component, and an optical module, and a manufacturing method. The optical lens comprises at least two lens units; the two lens units each have a first side and a second side; the adjacent first side and second side of the two lens units are superposed; and the two adjacent lens units are different in refractive index to form a laminated optical lens to replace a conventional optical lens.

Description

Optical lens, optical element and optical module and manufacturing method thereof

The invention relates to the field of optical lenses, and further relates to an optical lens, an optical element, an optical module, and a manufacturing method.

Light plays a very important role in people's daily life. The light reflected by objects enters the human eye, so that people can see various objects. To some extent, light determines people's observations.

Similarly, in order to present the information of the observed object to people, it can be obtained by emitting light or obtaining light. For example, in the camera module, the object related information is obtained by obtaining light. In VCSEL, the reflected light is further obtained by emitting light. The information about the object is obtained from the light, but whether it is in the process of obtaining or reflecting the light, forming an optical path is an essential content.

For example, an optical lens is one of the most common optical path components. A typical lens includes multiple lenses and a lens barrel. Each lens is independently installed at a predetermined position in the lens barrel. A spacer is provided between the lenses to facilitate A predetermined optical path is formed between the lenses, and there is an air gap between the lenses.

There are some factors that affect the light path in traditional lenses.

First, in conventional lenses, the lenses are manufactured separately, that is, each lens is independently manufactured in a predetermined shape, such as by injection molding. That is, each exists independently during manufacturing. Further, the entire optical system is assembled through two steps of assembly and packaging.

Specifically, after each lens is manufactured in a predetermined shape, it is sequentially installed in the lens barrel at a predetermined position. The assembly process is limited by the installation accuracy. Each lens has a certain assembly tolerance between the lens and the lens barrel. After the assembly of the entire lens, a cumulative tolerance can be understood. Under certain process conditions, the cumulative tolerance will increase as the number of lenses increases. At the same time, in order to ensure the yield, each lens needs to be adjusted during the assembly process.

Further, the optical system is a very sensitive system. When the lens is assembled in the lens barrel, the accuracy is high, and the process of installing the independent lens in a closed cavity is a relatively difficult process in itself, which makes the entire lens It takes a long time to assemble and manufacture.

Furthermore, in the optical imaging process of traditional lens elements, the divergence and convergence of light mainly depend on the curvature of the lens and the difference in refractive index between the lens and the air. This method of optical design naturally brings the above assembly. problem.

Further, there is an air gap between the lenses. The shape of this air gap is determined by the shape of the adjacent lens. The size of the air gap affects the optical effect of the lens, and the control of the air gap is difficult to accurately control during the manufacturing and assembly process. content. In other words, in a conventional lens, the lenses and the air layer are alternately arranged so as to form a predetermined light path. To some extent, it can be said that the air gap forms an "unshaped lens", and the shape of this "unshaped lens" needs to be controlled during the manufacturing and assembly process. This indirect control makes the optical path uncertain and unstable. Performance, causing a certain degree of accuracy degradation.

Furthermore, for many optical projection modules, such as VCSEL modules, the light source often has a large heating situation. The lens's heat will affect the overall imaging, resulting in out of focus and imaging shift. At the same time, the environment with high temperatures throughout the year, also Higher requirements will be placed on the reliability of the entire module. At the same time, for the lens that needs to emit a predetermined light, it is usually done by a lens that diverges the light. Similarly, the problems of traditional lenses have a greater impact on the optical path and the module itself in the VCSEL module. It directly restricts the miniaturization of the entire optical projection module.

An object of the present invention is to provide an optical lens, an optical element, and an optical module, and a method for manufacturing the same, wherein the optical lens includes at least two lens units, and two adjacent lens units are superimposed, and light is directly in the phase. Adjacent two lens units propagate between the two without passing through the air layer, replacing the traditional lens structure.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, wherein the optical element is molded by one-time molding, so that the entire module has higher reliability.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, wherein a molded upper surface of the optical element has a curvature, and can produce a function of diverging or converging light.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, wherein the optical module is molded by one-time molding, thereby having better heat dissipation performance.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, in which an optical path design is formed layer by layer through a molding process, and a light shielding process is performed on the integrally formed lens unit, and then cut into individual parts Optical lens, optical element or optical module.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, wherein the optical lens forms a whole optical path layer by layer through a molding process.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, wherein the optical lens includes at least two lens units, and each of the lens units is interdependent.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, in which two adjacent lens units are adhered to each other and have a more defined and stable optical path.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, wherein each of the lens units has a compact molding structure, and can relatively form a more compact and miniaturized optical module.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, wherein each of the lens units uses a refraction of a solid, a liquid medium, and a different medium of gas to refract light, thereby forming a new Optical structure.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, wherein during the manufacturing process, each of the lenses is formed layer-by-layer by a mold to form a surface having the same or different curvature, thereby reducing assembly errors.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, wherein refractive indexes between two adjacent lens units are different, so that light passes from one lens unit to another lens unit. Refraction of light occurs.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, wherein in the process of light propagation, the refractive indices of adjacent propagation media are different, and the interface is curved, so that light passes from one medium to In the other medium, light refraction occurs.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, in which each of the lens units is sequentially and integrally manufactured by molding and integrally molding, thereby using adjacent lens units and molds. Form a lens unit.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, wherein the optical lens has a light transmitting region and a light shielding region, and a predetermined light path is defined by a light shielding structure.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, wherein the optical element includes a base layer and an optical element, and the base layer is suitable for covering the optical element. A non-airborne propagation medium is formed over the optical element.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method. In some embodiments, at least one of the lens units is formed by attaching the optical element.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, wherein the optical element is a photosensitive element or a light source to receive light or emit light.

An object of the present invention is to provide an optical lens, a camera module, and an optical element and a method for manufacturing the same. In some embodiments, the optical lens has a mounting slot, which is suitable for being integrally mounted to the light of the optical element. On the road, a camera module or a light source module is formed.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, wherein the optical lens further includes an optical interference element, and forms a predetermined projection image in cooperation with each of the lens units and the optical element. .

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, wherein the optical lens, the optical element, the optical module, and the manufacturing method are manufactured by integral molding to reduce tolerances and improve production efficiency.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, in which a mold is integrally formed to obtain a predetermined shape and assembly accuracy with higher accuracy.

An object of the present invention is to provide an optical lens, an optical element, an optical module, and a manufacturing method, wherein the optical lens and the optical element can be arbitrarily combined and installed in a conventional lens or module structure, so as to a certain extent Reduce the requirements for installation accuracy.

In order to achieve at least one object of the present invention, an aspect of the present invention provides an optical lens, including:

At least two lens units, wherein at least one lens unit is formed by being attached to another lens unit.

According to some embodiments, in the optical lens, the refractive indices of two adjacent lens units are different.

According to some embodiments, the optical lens, wherein the lens unit has at least one curved surface.

According to some embodiments, the optical lens, wherein the optical lens has a light-transmitting area and a non-light-transmitting area, the light-transmitting area is located in a central area, and the opaque area surrounds the outside of the light-transmitting area .

According to some embodiments, in the optical lens, the surfaces of two adjacent lens units are adhered to each other.

According to some embodiments, in the optical lens, the lens unit is integrally formed by molding.

According to some embodiments, the optical lens, wherein the lens unit is made of a transparent material.

Another aspect of the present invention provides an optical module, including:

An optical lens including at least two lens units, wherein at least one of the lens units is attached to another lens unit; and

An optical element; the optical lens is located in an optical path of the optical element.

According to some embodiments, the optical module, wherein the optical element and the optical lens constitute a camera module.

According to some embodiments, in the optical module, the optical element and the optical lens constitute a light source module.

Another aspect of the present invention provides an optical element including:

An optical element;

A circuit board; and

A base layer; wherein the base layer is integrally formed on the optical element and the circuit board.

Another aspect of the present invention provides an optical lens, which includes: at least two lens units, wherein two of the lens units are adhered to each other, and the refractive indices of the two lens units are different.

Another aspect of the present invention provides an optical lens including at least two lens units, wherein at least one of the lens units is formed by attaching to the other lens unit.

According to some embodiments, in the optical lens, the refractive indices of two adjacent lens units are different.

According to some embodiments, the optical lens, wherein the lens unit has at least one curved surface.

Another aspect of the present invention provides an optical lens including at least two lens units, wherein each of the lens units has at least one curved surface, and the curved surfaces of two adjacent lens units are complementary in shape.

Another aspect of the present invention provides an optical element including:

At least one optical element;

A circuit board; and

A base layer; the optical element is electrically connected to the circuit board, and the base layer is transparently covered by the optical element.

Another aspect of the present invention provides an optical element including:

At least one optical element;

A circuit board; and

A base layer, wherein the optical element is electrically connected to the circuit board, and the base layer is integrally formed with the optical element to form a light path with a curved surface located on the optical element.

Another aspect of the present invention provides an optical element including:

At least one optical element;

A circuit board; and

A base layer; the base layer is integrally formed on at least part of the optical element and at least part of the circuit board.

Another aspect of the present invention provides an optical module, including:

An optical lens; and

An optical element; the optical lens is integrally formed on the optical element.

Another aspect of the present invention provides an optical module, including:

An optical lens; and

An optical element, the optical element includes an optical element; a circuit board and a base layer, and the base layer is integrally formed on at least part of the optical element and at least part of the circuit board; wherein the optical lens is located on the optical element Light path.

Another aspect of the present invention provides an optical module, including:

An optical lens including at least two lens units, each of the lens units having a first surface and a second surface, and the adjacent first surfaces and the second surfaces of the two lens units The surfaces are superimposed, and the refractive indices of two adjacent lens units are different; and

An optical element, the optical element includes an optical element and a circuit board, the optical element is electrically connected to the circuit board, and the optical lens is located on an optical path of the optical element.

According to some embodiments of the optical module, a first surface and a second surface of at least one of the lens units each have a curved surface, and a lens is formed between the two curved surfaces.

According to some embodiments of the optical module, the first surface and the second surface of at least one of the lens units each have an edge surface, and the edge surface surrounds the curved surface.

According to some embodiments of the optical module, the edge surface of the first surface or the second surface of one of the lens units is a flat surface.

According to some embodiments of the optical module, the optical lens has a light-shielding area to form a predetermined light path, and the light-shielding area is disposed on at least part of a top surface, a side surface, and / or a bottom surface of the optical lens.

According to some embodiments of the optical module, at least one of the lens units is provided with a light shielding area to form a predetermined light path, and the light shielding area is disposed on the edge surface.

According to some embodiments of the optical module, the light-shielding area is formed by affixing, electroplating, vacuum sputtering, coating or spraying.

According to some embodiments of the optical module, the light-shielding region is a coating layer.

According to some embodiments of the optical module, the second surface of one of the lens units is integrally formed with the first surface of the other lens unit.

According to some embodiments of the optical module, a second surface of one of the lens units is attached to a first surface of the other lens unit.

According to some embodiments of the optical module, the lens unit at the bottom has a mounting groove, so that the optical lens is suitable for mounting with the optical element and covers the optical element.

According to some embodiments of the optical module, the optical element is a photosensitive element or a light source.

According to some embodiments of the optical module, the lens unit on the bottom side of the optical lens is integrally formed to cover the optical element.

According to some embodiments of the optical module, the optical element is a photosensitive element or a light source.

According to some embodiments of the optical module, the lens unit is integrally formed by molding a transparent material.

According to some embodiments of the optical module, a first side of one of the lens units is integrally formed by a forming mold.

According to some embodiments of the optical module, the number of layers of the lens unit is 1 to 40 layers.

According to some embodiments of the optical module, the number of layers of the lens unit is 2 to 15 layers.

According to some embodiments of the optical module, the refractive index of the lens unit ranges from 1.1 to 1.9.

According to some embodiments of the optical module, the refractive index of the lens unit ranges from 1.4 to 1.55.

According to some embodiments of the optical module, a central thickness of the lens unit ranges from 0.1 mm to 0.6 mm.

According to some embodiments of the optical module, wherein the optical lens includes an optical interference element, the optical interference element is disposed on a top end of the optical lens, so that the optical lens generates an interference pattern.

According to some embodiments of the optical module, the material of the lens unit is selected from one or more of epoxy resin, silicon material, plastic, PC, PMMA, organic solution, and aerosol.

Another aspect of the present invention provides an optical module, including:

An optical lens; and

An optical element, the optical element including an optical element and a circuit board, the optical element is electrically connected to the circuit board, the base layer covers the optical element in a transparent manner, and the optical lens is located on the optical element. Light path.

According to some embodiments of the optical module, the base layer integrally covers the optical element.

According to some embodiments of the optical module, the base layer is bonded to the optical element.

According to some embodiments of the optical module, the base layer has a top surface, and the top surface is a plane.

According to some embodiments of the optical module, the base layer has a curved surface, and the curved surface is located on an optical path of the optical element.

According to some embodiments of the optical module, the base layer is provided with a light-shielding region, so that the base layer forms a predetermined light path.

According to some embodiments of the optical module, wherein the optical lens includes a lens unit, the lens unit has a first surface and a first second surface, the first surface and the first second surface are oppositely arranged, so The second surface of the lens unit is superposed on the base layer.

According to some embodiments of the optical module, wherein the optical lens includes a lens unit having a first surface and a first second surface, the first surface of the lens unit and the second surface The surfaces each have a curved surface, and a lens is formed between the two curved surfaces.

According to some embodiments of the optical module, wherein the optical lens includes at least two lens units, each of the lens units has a first surface and a second surface, and two adjacent ones of the lens units The first surface and the second surface are overlapped.

According to some embodiments of the optical module, wherein the optical lens has a light-shielding area to form a predetermined light path, the light-shielding area is disposed on at least a part of a top surface, at least a part of a top surface, a side surface, and / Or underside.

According to some embodiments of the optical module, an air gap is formed between the first lens unit and the base layer.

The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are merely examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

Those skilled in the art should understand that, in the disclosure of the present invention, the terms "vertical", "horizontal", "up", "down", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "level", "top", "bottom", "inside", "outside" and the like is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the invention And simplify the description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, so the above terms should not be construed as limiting the invention.

It can be understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in other embodiments, the element The number can be multiple, and the term "a" cannot be understood as a limitation on the number.

In the traditional lens, each lens is manufactured independently and assembled separately. The lens and the air gap are alternately combined to form the lens. As can be seen from the foregoing, in the existing lens manufacturing process, glass / organic materials and air are used. Refraction between different lenses and curvature of different lenses to achieve the change of light path, but in fact, the use of different refractive index between different materials can also be used for optical design. The difference is that the assembly of solid or liquid cured materials can reduce the difficulty of design to a certain extent, and increase the reliability of the product as a whole. According to the present invention, an optical lens, an optical element, an optical module, and a manufacturing method are provided, in which an optical lens is formed by mutually adjoining lens units, unlike a structure that is independent and separated from each other in a traditional lens, and avoids the formation of each lens during assembly Where the refractive indices of two adjacent lens units are different, so that light is refracted when one lens unit enters the other lens unit, thereby forming a predetermined light path after multiple refractions; where Each lens unit of the optical lens has at least one curved surface, so that the lens unit has a lens function, that is, when parallel light rays are incident from the curved surface, the light rays are converged or diverged instead of being emitted in parallel; The lens unit is integrally formed by successively attaching transparent materials, instead of being independently formed separately; wherein the optical lens has a light transmitting area and a light shielding area, and the light transmitting area forms a predetermined light path; wherein The optical lens can be integrated into an optical element to form an integrated optical mold. For example, a camera module or a light source module; wherein the optical lens may include an optical interference element, and the optical interference element cooperates with each of the lens units so that the incident or outgoing light forms a characteristic pattern, For example, a dot speckle pattern. Further, the optical interference element is composed of a diffusion sheet (Diffuser) and a grating sheet (Raster). The diffusion sheet functions to scatter the laser beam into an irregularly distributed point speckle pattern, and then diffracts the speckle pattern through the grating. After "copying", expand its projection angle. This "copying" effect is called optical convolution. Speckles that occur when a light beam passes through a diffuser are convolved after passing through a grating to obtain speckles at the required transmission angle.

The optical module can be applied to various electronic devices, such as smart phones, 3D sensing devices, tablet computers, wearable devices, and monitoring devices.

As shown in FIG. 1, it is a schematic perspective view of an optical module 100 according to a first embodiment of the present invention. As shown in FIG. 2, a schematic cross-sectional view of an optical module 100 according to a first embodiment of the present invention is shown. The optical module 100 includes an optical lens 10 and an optical element 20.

The optical lens 10 is used for performing an optical action on light rays reaching or leaving the optical element 20. The optical effect is not limited to, for example, the converging or diverging of light rays by refraction.

The optical lens 10 is disposed on the optical path of the optical element 20 so as to act on light entering or leaving the optical element 20.

Further, referring to FIGS. 1 and 2, according to this embodiment of the present invention, the optical lens 10 is integrally formed on the optical element 20. That is, during manufacture, the optical lens 10 is formed by attaching to the optical element 20, and is not connected and fixed through other media, such as glue. Of course, in other embodiments of the present invention, the optical lens 10 may be fixedly connected to the optical element 20 through other media, and the present invention is not limited in this respect.

Referring to FIG. 2, the optical lens 10 includes at least two lens units 11, wherein at least two adjacent lens units 11 are stacked and attached. Further, at least two adjacent contact surfaces of the lens units 11 are bonded together. That is, the bottom surface of the lens unit 11 located above and the top surface of the lens unit 11 located below are complementary in shape. In other words, two adjacent lens units 11 are arranged one on top of another to form two laminated dielectric layers, so that when light propagates through two adjacent lens units 11, they directly pass from one of the lenses The unit 11 reaches another said lens unit 11 without propagation through the air medium layer.

Further, in some embodiments, the lens unit 11 located above is integrally formed by being attached to the lens unit 11 located below, so that the lens units 11 are fitted together. Furthermore, the lens unit 11 is formed by integrally forming a transparent material, for example, by molding.

The refractive indices of two adjacent lens units 11 are different, so that light rays are refracted when one lens unit 11 enters the other lens unit 11 instead of traveling in the same straight line. For example, the refractive index range of each of the lens units 11 is 1.1 to 1.9, and preferably, the refractive index range of the lens units 11 is 1.4 to 1.55. In other words, the two adjacent lens units 11 are formed of materials with different refractive indices during molding.

The material of the lens unit 11 may be an organic substance or an organic polymer such as epoxy resin, silicon material, plastic, PC, PMMA, organic solution, and aerosol.

In some embodiments, each of the lens units 11 is separately formed, and the adjacent lens units 11 are attached to each other by assembly. Those skilled in the art should understand that the manner of forming the lens unit 11 is not a limitation of the present invention.

It is worth mentioning that in the traditional lens, the lens is successively and independently installed in the lens barrel, an air layer is formed between the lenses, and the refractive index of the conventional lens is the same. The formed medium and air medium alternate with each other, that is, in the whole process, there are only two kinds of refractive index media, namely the refractive medium of glass or resin and air, so an air layer must be provided between adjacent lenses to achieve refraction The change in the rate of light, so as to achieve the refracted propagation of light between two adjacent media. This method makes the lens larger, and the lenses cannot be arranged compactly. In the present invention, two adjacent lenses are in close contact with each other, the shapes are complementary, the structure is compact, and the refractive indices of the two adjacent lens units are different, so that light enters one lens unit 11 into the other lens. The unit 11 generates refraction when it is formed, thereby forming a structure different from the traditional lens and capable of producing a refraction effect of divergence or convergence. The number of the lens units 11 may be 1 to 40, and preferably, the number of the lens units 11 may be 2 to 15. It is worth mentioning that in the traditional lens, the refraction and propagation of light is accomplished through the alternation of the lens and the air gap, and in the present invention, the propagation of light is completed by each of the lens units 11 separately. Compared with the air medium, There is a certain difference in refractive index, and in the present invention, the effect of light propagation caused by the absence of an air gap is compensated by the superposition of the multilayered lens unit 11.

In some embodiments, the optical lens 10 is square, that is, each of the lens units 11 is square. It is worth mentioning that, in the traditional lens, because the lens is separately assembled in the lens barrel, in order to facilitate adjustment, the lens is usually a circular structure, usually multiple lenses cannot be manufactured at one time, and there are errors in the process of separate lens manufacturing. There is also an error when the lens is separately assembled on the lens barrel, so the overall has a large assembly tolerance. The square lens unit 11 of the present invention is convenient for mass production. A plurality of the lens units 11 can be formed by one molding and then splitting, and a plurality of the optical lenses 10 can be formed at one time. Ways to reduce errors in assembly.

For example, when the optical lens 10 is manufactured, a plurality of integrally connected lens units 11 may be integrally formed by a mold first, that is, a first layer of the lens units 11 is formed, and then the first layer is described in the first layer. The second layer of the lens unit 11 is integrally formed on the top surface of the lens unit 11, thereby forming a plurality of layers of the lens unit 11 one by one, and finally dividing the plurality of layers of the lens unit 11, such as squarely, to form multiple Of the said optical lens 10.

It is worth mentioning that, as described later, when the adjacent two layers of the lens units 11 are formed, the corresponding light-shielding regions are set to form a predetermined light path. And during the molding process, by adjusting the mold, when forming another layer of the lens unit 11, the error of the formed lens unit layer can be compensated. For example, after forming the first layer of the lens unit 11, the detection is performed. The error of the lens unit 11 in the first layer, and then the molding die is adjusted according to the error, and the lens unit 11 in the second layer is further formed based on the lens unit 11 in the first layer. In turn, other layers can be corrected The lens unit 11 can compensate for the error of the lens through the adjustment of the mold, so that the optical lens 10 has a smaller assembly error and provides a better optical effect. For example, in the traditional manufacturing process, the unilateral error of the overall mechanical assembly is about 0.03 mm, and in the present invention, the manufacturing error of the integral molding using the molding die can be reduced to 0.01 mm.

It is also worth mentioning that traditional lenses are usually formed by injection molding, which is limited by technological standards. For example, the thinnest position of the lens needs to meet the requirements of release and assembly strength, so the thickness of the lens is relatively large. Greater than 0.3 mm, and according to the present invention, the lens unit is formed by molding and integrally formed, and the layer is attached in such a way that the thickness of the lens unit 11 is small, such as the thinnest of the lens unit 11 The position can reach 0.1mm.

Further, the thickness of the lens unit 11 is 0.1 mm to 0.6 mm. Optionally, the thickness of the lens unit 11 is 0.1mm ~ 0.2mm, 0.2mm ~ 0.3mm, 0.3mm ~ 0.4mm, 0.4mm ~ 0.5mm, 0.5mm ~ 0.6mm. The thickness of the lens unit 11 may be a central thickness.

1 and FIG. 2, the optical element 20 includes an optical element 21 and a circuit board 22. The optical element 21 is disposed on the circuit board 22 and is electrically connected to the circuit board 22. Limited to being electrically connected through a gold wire. The optical lens 10 is located in an optical path of the optical element 21.

More specifically, as shown in FIG. 3, according to a schematic diagram of an optical path of the first embodiment of the present invention, the optical element 21 may be a photosensitive element, which can perform a photosensitive effect. That is, the external light reaches the photosensitive element through the optical action of the optical lens 10, and the light signal is converted into an electrical signal by the photosensitive action of the photosensitive element, and then the information is transmitted to the circuit board. twenty two. That is, in this embodiment, the optical lens 10 and the optical element 20 may constitute a camera module for image acquisition.

Referring to FIG. 4, another schematic diagram of an optical path according to the first embodiment of the present invention. The optical element 21 may be a light source for emitting light. That is, the light emitted by the light source is emitted after passing through the optical action of the optical lens 10, and the optical lens 10 and the optical element 20 constitute a light source module. The light source is exemplified but not limited to VCSEL, and the light source module may be used to manufacture a TOF module, a structured light module, a projection module, and the like.

Referring to FIGS. 1 and 2, each of the lens units 11 has at least one curved surface 110 so that the lens unit 11 forms a lens structure with a predetermined shape. The curved surface 110 is exemplified but not limited to a convex surface or a concave surface. More specifically, in some embodiments, the curved surface 110 of the lens unit 11 is located in a central area, that is, the central area of each of the lens units 11 has a curved structure and the peripheral area has a flat structure, or Approaching a flat structure. Those skilled in the art should understand that the area size and specific shape of the curved surface 110 are not limited by the present invention. That is, the peripheral area of the curved surface 110 of the lens unit 11 constitutes an edge surface 120. The edge surface 120 surrounds the curved surface 110.

Further, at least one of the lens units 11 in each of the lens units 11 has two curved surfaces 110, and the two curved surfaces 110 constitute a lens structure.

Further, two adjacent curved surfaces 110 of two adjacent lens units 11 are attached to each other. That is, the shapes of two adjacent curved surfaces 110 of two adjacent lens units 11 are complementary. The curved surface 110 is provided on the top surface and / or the bottom surface of each of the lens units 11.

Each of the lens units 11 has a first surface 1101 and a second surface 1102, and the first surface 1101 and the second surface 1102 are curved, so that the lens unit 11 constitutes a lens. Adjacent surfaces of two adjacent lens units 11 are overlapped. For example, a side near the upper side is the first surface 1101, and a second side near the lower side is the second surface 1102. In the same coordinate, a first surface 1101 of the lens unit 11 is located above The second surface 1102 of the other lens unit 11 is overlapped, so that during the light propagation process, the light entering the adjacent one of the lens units 11 passes through the first surface 1101 of the middle and The second surface 1102 directly enters the other lens unit 11. It is worth mentioning that, in this embodiment of the present invention, one of the lens units 11 is formed on the other lens unit 11 by integral molding, and in other embodiments of the present invention, it can also be formed by gluing. In a fixed manner, the second surface 1102 of one lens unit 11 is overlapped with the first surface 1101 of the other lens unit 11.

It is worth mentioning that the shape of the top surface and the bottom surface of the lens unit 11 may be a spherical structure or an aspherical structure, such as a convex surface, a concave surface, a groove and the like. Those skilled in the art should understand that the shapes of the top surface and the bottom surface of the lens unit 11 are not a limitation of the present invention.

For the convenience of description, a smaller number of the lens units are selected for illustration in the drawings of the description, and are labeled as the first lens unit 111, the second lens unit 112, the third lens unit 113, and the fourth from the bottom to the top, respectively. A lens unit 114, and a fifth lens unit 115. The first lens unit 111, the second lens unit 112, the third lens unit 113, the fourth lens unit 114, and the fifth lens unit 115 all have at least one curved surface 110.

The first lens unit 111, the second lens unit 112, the third lens unit 113, the fourth lens unit 114, and the fifth lens unit 115 are sequentially stacked to form an overall optical lens. That is, the first surface 1101 of the first lens unit 111 and the second surface 1102 of the second lens unit 112 overlap, and the first surface 1101 of the second lens unit 112 and the third The second surface 1102 of the lens unit 113 is overlapped, and the first surface 1101 of the third lens unit 113 and the second surface 1102 of the fourth lens unit 114 are overlapped. The first surface 1101 is overlapped with the second surface 1102 of the fifth lens unit 115, and the first surface 1101 of the fifth lens unit 115 constitutes a light incident surface or a light exit surface.

Taking the first lens unit 111 and the second lens unit 112 as an example, the first lens unit 111 has a top surface 1111, that is, the first surface 1101, and the second lens unit 112 has a top surface. The surface 1121 is the first surface 1101 and the bottom surface 1122 is the second surface 1102. The first surface 1101 and the second surface 1102 are oppositely arranged, that is, the first surface 1101 and the second surface 1102 are located on opposite sides.

The top surface 1111 of the first lens unit 111 and the bottom surface 1122 of the second lens unit 112 overlap, in other words, the top surface 1111 of the first lens unit 111 and the second lens unit 112 The shapes of the bottom surface 1122 are complementary, so that the two dielectric layers formed by the first lens unit 111 and the second lens unit 112 are directly connected without passing through the air medium layer.

In some embodiments, two adjacent lens units 11 are attached to each other, that is, each of the lens units forms a first surface 1101 and a second surface 1102 with complementary shapes, and then each complementary lens is formed. The units 11 are combined to form a stacked dielectric layer.

In some embodiments, the bonding surfaces of two adjacent lens units 11 are formed to be mutually dependent. For example, taking the first lens unit 111 and the second lens unit 112 as an example, the first A lens 111 is formed to form a top surface 1111 of a predetermined shape, and then the top surface 1111 is attached, and the second lens unit 112 is further formed on the top surface 1111 by a mold, that is, the first lens unit The top surface 1111 of 111 forms the bottom surface 1122 of the second lens unit 112, and the top surface 1111 of the second lens unit 112 is formed by a mold to form a stacked dielectric layer.

More specifically, in some embodiments, the curved surface 110 corresponds to an optical region of the optical element 20. For example, when the optical element 21 is the photosensitive element, the optical region of the optical element 20 is the photosensitive region of the photosensitive element, that is, each of the lens unit 11 and the curved surface 110 and the The photosensitive regions of the photosensitive elements correspond to each other, thereby forming a predetermined light path for the photosensitive elements. When the optical element 21 is the light source, each of the lens unit 11 and the curved surface 110 corresponds to a light emitting area of the light source, thereby forming a predetermined light path for the light source.

Further, referring to FIG. 1 and FIG. 2, the optical lens 10 has a light-transmitting area 12 and a light-shielding area 13. The light-transmitting area 12 is used for light transmission to form a predetermined light path. The light shielding area 13 is used to block light and prevent stray light from disturbing the optical path.

Referring to FIG. 1 and FIG. 2, in this embodiment of the present invention, the light-shielding region 13 is provided on the periphery and sides of the top surface of the optical lens 10, and the light transmission is formed in a central region of the optical lens 10. District 12.

Referring to FIG. 1 and FIG. 2, in this embodiment of the present invention, the light-shielding region 13 is disposed on a top surface of the lens unit 11 at a top and a side surface of each of the lens units 11. That is, the light shielding area 13 is provided on the top surface and the side of the lens unit 11 located on the top, and the light shielding area 13 is provided on the side of the lens unit 11 located on the bottom. That is, the light-shielding area 13 is provided on a top surface, a bottom surface, and / or a side surface of the optical lens 10. More specifically, the light-shielding area 13 is provided on a part of the bottom surface and the bottom surface of the optical lens, and The entire side surface forms a light shielding structure, so that the optical lens 10 forms a predetermined light path.

The method for forming the light-shielding region 13 is, for example, but not limited to, methods such as attaching, electroplating, galvanizing, vacuum sputtering, coating, spraying, and the like. That is, in some embodiments, at least one of the lens units 11 is provided with a light-shielding region 13 covering at least a part of the top surface and side surfaces of the lens unit 11 so as to control the light entering and / or exiting. The shape and size of the pathway, that is, the light transmitting region 12. The light transmitting region 12 is, for example but not limited to, an annular region, and the size of the annular region is controlled by the light shielding region 13. In other words, the light-shielding region 13 forms a light-shielding structure that blocks the surrounding light of the light-transmitting region 12, thereby forming the light-transmitting region 12 with a predetermined light path. More specifically, the edge region 120 of the lens unit 11 is provided with the light shielding region 13, and the curved surface 110 of the lens unit 11 constitutes the light transmitting region 12.

Preferably, the light-shielding region 13 is a coating layer attached to a predetermined region of the lens unit 11, such as a predetermined region of a top surface and a bottom surface, so as to form a predetermined optical path. It is worth mentioning that the coating layer covers the top area and the side wall of the optical lens, so that at least part of the top of the optical lens 10 and the side wall are isolated from the outside, so that the optical lens 10 has better performance. Waterproof and abrasion resistance.

As shown in FIG. 5, it is a schematic diagram of a forming process of the optical module 100 according to the first embodiment of the present invention. For example, the optical module 100 may be formed by assembling the optical element 21 on the circuit board 22 to form the optical element 20, and then attaching the optical element 21 and the circuit board 22. The lens unit 11, that is, the first lens unit 111 located at the bottom is integrally formed, and the top surface of the lens unit 11 has the curved surface 110. For example, the mold is formed by a mold so that a molding material is filled in the mold, and the top surface forms the curved surface 110 in a predetermined shape by the inner top surface of the mold. That is, at this time, the bottom surface of the first lens unit 111 is attached to the circuit board 22 and the optical element 21, and the top surface 1111 of the first lens unit 111 is placed outside. In other words, the bottom surface 1112 (or the second surface 1102) of the first lens unit 111 is integrally formed to cover at least part of the optical element 20. Preferably, the bottom surface 1112 (or the second surface) of the first lens unit 111 1102) The optical element 21 and at least a part of the circuit board 22 are integrally formed to cover the surface of the optical element to form the bottom surface 1112, and the top surface 1111 is formed according to a mold. That is, the surface of the optical element 21 is isolated from the outside air by the first lens unit 111.

Further, the top surface 1111 of the first lens unit 111 is attached, and another lens unit 11 is integrally formed, such as the second lens unit 112, that is, the bottom surface 1122 of the second lens unit 112 is attached to the The top surface 1111 of the first lens unit 111 forms a complementary structure. For example, when the top surface 1111 of the first lens unit 111 is convex, the bottom surface 1122 of the second lens unit 112 is concave. When the top surface 1111 of the first lens unit 111 is concave, the bottom surface 1122 of the second lens unit 112 is convex. In this manner, the other lens units 11 such as the third lens unit 113, the fourth lens unit 114, the fifth lens unit 115, and the like are sequentially formed. It can be seen that each of the lens units 11 is formed to be attached to each other to form a complementary structure. In this way, two adjacent lens units 11 are attached to each other without an air gap layer in the middle, thereby forming a stable optical path. And the complementary structure can compensate the errors formed in the manufacturing process through the mold, thereby reducing the overall cumulative tolerance.

It is worth mentioning that, in the present invention, each of the lens units 11 is integrally formed by attaching the optical element 21 and the circuit board 22 to approach the surface of the optical element 21 with the maximum limit, greatly shortening the The overall height of the optical module 100, and the surface of the optical element 21 is covered by the transparent lens unit 11 to protect the optical element 21 from being damaged, and can have a good heat dissipation effect.

In some embodiments, the optical element 21 is electrically connected to the circuit board 22 through an electrical connection element 211. The electrical connection element 211 is, for example, but not limited to, a gold wire, a lead wire, a copper wire, and an aluminum wire.

Referring to FIG. 5, the optical module 100 and the optical lens 10 are integrally manufactured by a molding mold 30. Preferably, the optical module 100 and the optical lens 10 are manufactured by the molding die 30 by molding.

The molding mold 30 includes a lower mold 31 and an upper mold group 32. The lower mold 31 and the upper mold 32 cooperate with each other, and the lens unit 11 is sequentially formed by a molding material and a molding material, thereby forming the lens unit 11. Optical lens 10. In this embodiment of the present invention, the first lens unit 111, the second lens unit 112, the third lens unit 113, the The fourth lens unit 114 and the fifth lens unit 115.

The upper mold group 32 includes a plurality of upper molds, which are respectively matched with the lower mold 31 to form each of the lens units 11. The number of upper molds in the upper mold group 32 is related to the number of lenses in the lens unit 11 to be imaged. For example, when five lens units are required, five of the upper molds are required to cooperate with the lower mold 31. Referring to FIG. 5, three lens units 11 among the five lens units 11 are formed as an example for description. The upper mold set 32 includes three upper molds, which are a first upper mold 321, a second upper mold 322, and a third upper mold 323, respectively.

The first upper mold 321 and the lower mold 31 cooperate to form a first lens 111 of the lens unit 11, and the second upper mold 322 and the lower mold 31 cooperate to form the first lens 111 of the lens unit 11. The two lens units 112, the third mold 323 and the lower mold 31 cooperate to form the fifth lens unit 115 of the lens unit 11.

The first upper mold 321 and the lower mold 31 have a mold clamping state and a mold opening state. In the mold clamping state, the first upper mold 321 and the lower mold 31 are closed to each other to form a first A molding cavity 301 is used for filling the molding material to form the first lens unit 111. Specifically, the first molding cavity 301 is used for accommodating the optical element 20, and a molding material is allowed to enter the first molding cavity 301, so that the first lens unit 111 is formed integrally with the optical element 20.

The second upper mold 322 and the lower mold 31 have a mold clamping state and a mold opening state. In the mold clamping state, the second upper mold 322 and the lower mold 31 are closed to each other to form a second mold. A molding cavity 302 is used for filling the molding material to form the first lens unit 111. Specifically, the second molding cavity 302 is configured to receive the optical element 20 and the first lens unit 111, and allows a molding material to enter the second molding cavity 302, so as to be integrated with the first lens unit 111. The second lens unit 112 is molded.

Further, the third lens unit 113 and the fourth lens unit 114 are sequentially formed by the other two upper molds.

The third upper mold 323 and the lower mold 31 have a mold clamping state and a mold opening state. In the mold clamping state, the third upper mold 323 and the lower mold 31 are closed to each other to form a third mold. A molding cavity 303 is used for filling the molding material to form the fifth lens unit 115. Specifically, the third molding cavity 303 is configured to receive the optical element 20 and the first lens unit 111, the second lens unit 112, the third lens unit 113, and the fourth lens unit 114. , And the molding material is allowed to enter the third molding cavity 303, so that the fifth lens unit 115 is integrally molded according to the fourth lens 111.

Further, the lower mold 31 has a lower cavity 310 for receiving the circuit board 22. That is, during molding, the first upper mold 321 and the lower mold 31 are opened. The circuit board 22 is placed in the recessed cavity 310 so that the circuit board 22 is positioned through the recessed cavity 310 so as to form the first lens unit 111 at a predetermined position on the upper side of the optical element 20. . That is, the shape of the recessed cavity 310 is adapted to the shape of the circuit board 22.

The concave cavity 310 is recessed inward from the surface of the lower mold 31.

The first upper mold 321 has a first upper cavity 3210. The first upper cavity 3210 is used for filling a molding material to form the first lens unit 111. That is, when the first upper mold 321 and the lower mold 31 are closed, the lower cavity 310 of the lower mold 31 and the first upper cavity 3210 of the first upper mold 321 are closed. The first forming cavity 301 is communicated with each other. The first molding cavity 301 has a molding inlet to facilitate feeding of molding material into the first molding cavity 301.

The first upper mold 321 has a first molding surface 3211 for molding the first surface 1101 of the first lens unit 111. That is, during molding, the optical element 20 is placed in the lower cavity 310 of the lower mold 31, the first upper mold 321 is closed, and the first A molding surface 3211 and the top side of the optical element 20 form a filling space of the molding material with the circuit board 22 and the optical element 21, that is, the molding space corresponding to the first lens unit 1111. In other words, during molding, a molding material enters the first molding cavity 301 and adheres to the surface of the circuit board 22 and the optical element 21 to form a bottom surface 1112 (or a second surface 1102) of the first lens. The top surface 1111 (or the first surface 1101) of the first lens unit 111 is integrally formed according to the first molding surface 3211 of the first upper mold 321, that is, a top having a predetermined shape is formed. The first lens unit 111 of the surface 1111 and the bottom surface 1112. In other words, when the first lens 111 is formed, the shape of the top side surface of the optical element 20 determines the bottom surface 1112 of the first lens unit 111 and the first molding of the first upper mold 321 The shape of the surface 3211 determines the shape of the top surface 1111 of the first lens unit 111, and the space between the first molding surface 3211 of the first upper mold, the circuit board 22, and the optical element 21 is determined The overall shape of the first lens unit 111. In other words, when the first lens unit 111 is molded at a predetermined position of the optical element 20, a molding material covers a predetermined position on the surface of the optical element 20, such as including a predetermined position of the optical element 21, so that the molding material The surface of the optical element 21 is covered, so that light enters the optical element 21 through the molding material or the light emitted by the optical element 21 exits through the molding material, instead of being transmitted through the air medium. That is, the first lens unit 111 covers the surface of the optical element 21 to form a light propagation medium layer.

In some embodiments, the optical element 21 is electrically connected to the circuit board 22 through the electrical connection element 22, and the first lens unit 111 is integrally formed with the optical element 20, so the first lens unit 111 The surface of the optical element 21, the electrical connection element 221, and at least part of the surface of the circuit board 22 are covered, so that the relative positions of the optical element 21 and the circuit board 22 are stably fixed. In other words, the optical element 21 and the electrical connection element 221 are embedded in the first lens unit 111.

Further, the second upper mold 322 has a second upper cavity 3220, and the second upper cavity 3210 is used for filling a molding material to form the second lens 111. That is, when the second upper mold 322 and the lower mold 31 are closed, the lower cavity 310 of the lower mold 31 and the second upper cavity 3220 of the second upper mold 322 are closed. The second forming cavity 302 is communicated with each other. The second molding cavity 302 has a molding inlet to facilitate the feeding of molding material into the second molding cavity 302.

The second upper mold 322 has a second molding surface 3221 for molding the first surface 1101 of the second lens unit 112. That is, during the molding, the first lens unit 111 is provided. The optical element 20 is placed in the lower cavity 310 of the lower mold 31, the second upper mold 322 is closed, the second molding surface 3221 of the second upper mold 322 and the The top surface 1111 (or the first surface 1101) of the first lens unit 111 forms a filling space of a molding material, that is, a molding space corresponding to the second lens unit 112. In other words, during molding, a molding material enters the second molding cavity 302, attaches to the top surface 1111 of the first lens unit 111, forms the bottom surface 1122 of the second lens unit 112, and adheres to the The second molding surface 3221 of the second upper mold 322 is integrally formed to form the top surface 1121 (or the first surface 1101) of the second lens unit 112, that is, a top surface 1121 and a bottom surface 1122 having a predetermined shape are formed. The second lens unit 112. In other words, when the second lens unit 112 is formed, the shape of the top surface 1121 of the first lens unit 111 determines the shape of the bottom surface 1122 of the second lens 111, and the shape of the second upper mold 322. The shape of the second molding surface 3221 determines the shape of the top surface 1121 of the second lens unit 112, and a space between the second molding surface 3221 of the second upper mold 322 and the first lens unit 111. The overall shape of the second lens unit 112 is determined.

Further, the third upper mold 323 has a third upper cavity 3230, and the third upper cavity 3230 is used for filling a molding material to form the fifth lens unit 115. That is, when the third upper mold 323 and the lower mold 31 are closed, the lower cavity 310 of the lower mold 31 and the third upper cavity 3230 of the third upper mold 323 are closed. The third forming cavity 303 is communicated with each other. The third molding cavity 303 has a molding inlet to facilitate the feeding of molding material into the third molding cavity 303.

The third upper mold 323 has a third molding surface 3231 for molding the first surface 1101 and the second surface 1102 of the fifth lens unit 115, that is, the fifth lens unit 115 is molded and formed with The first surface 1101 and the second surface 1102 of a predetermined shape.

That is, during molding, the optical element 20 with the first lens unit 111 is placed in the lower cavity 310 of the lower mold 31, and the third upper mold 323 is closed, so that The third molding surface 3231 of the third upper mold 323 and the top surface 1111 (or the first surface 1101) of the first lens unit 111 form a filling space of a molding material, that is, correspond to the third lens 112 Molding space. In other words, during molding, the molding material enters the third molding cavity 303, adheres to the first surface 1101 of the fourth lens unit 114, forms the second surface 1102 of the fifth lens unit 115, and adheres to The third molding surface 3231 of the third upper mold 323 is integrally formed to form the top surface (or the first surface 1101) of the fifth lens unit 115, that is, a first surface 1101 and a first surface having a predetermined shape are formed. The fifth lens unit 115 on the two sides 1102. In other words, when the fifth lens unit 115 is formed, the shape of the top surface 1101 of the fourth lens unit 114 determines the shape of the bottom surface 1102 of the fifth lens unit 115. The shape of the third molding surface 3231 determines the shape of the top surface 1101 of the fifth lens unit 115, and the distance between the third molding surface 3231 of the third upper mold 323 and the fourth lens unit 114 The space determines the overall shape of the fifth lens unit 115.

Further, the first lens unit 111, the second lens unit 112, the third lens unit 113, the fourth lens unit 114, and the fifth lens are sequentially formed by the molding die 30 in the above. In the process of the unit 115, the light-shielding area 13 may be optionally set. For example, after the first lens unit 111 is obtained by molding the first upper mold and the lower mold, The first surface 1101 forms the light-shielding area 13. For example, the light-shielding area 13 is formed in a predetermined area of the first surface 1101 by means of attachment, electroplating, galvanization, vacuum sputtering, coating, spraying, and the like. The remaining portion of the first surface 11 forms the light-transmitting region 12, and light passes through the light-transmitting region 12. Of course, the lens on the top layer can also be formed integrally, such as the fifth lens unit 115 to form the light-shielding region 13 as a whole, for example, the light-shielding region 13 is formed on the side wall of the optical lens 10 and a predetermined region on the top surface.

In this embodiment of the present invention, the fifth lens unit 115 is a lens at the top, that is, the first first surface 1101 of the fifth lens unit 115 is an air medium of the optical lens 10. The incident or outgoing surface of the light. The second surface 1102 of the fifth lens unit 115 is a superimposed surface, that is, a surface combined with the first surface 1101 of the fourth lens unit 114, the first lens unit 111, the second lens unit 112 The surfaces of two adjacent lenses in the third lens unit 113 and the fourth lens unit 114 are joint surfaces, that is, the first surface 1101 and the second surface 1102 of the two adjacent lenses overlap each other.

Thus, the optical lens 10 and the optical module with the optical lens 10 are sequentially formed by the forming mold 30.

In this embodiment of the present invention, three of the optical lenses 10 are formed as an example for description. It can be understood that the number of lenses of the optical lens 10 can be more or less, such as 6 or more , 4 and below, when the lens of the optical lens 10 is adjusted, the mold such as the upper mold group 32 is adjusted accordingly, so that the optical lens with a predetermined number of lenses and a predetermined shape of the lens is integrally formed by the forming mold 30. 10 and optical modules.

As shown in FIG. 6, it is a schematic diagram of an optical module 100 according to a second embodiment of the present invention. As shown in FIG. 7, it is an enlarged view of a part of an optical module 100 according to a second embodiment of the present invention. In this embodiment of the present invention, the surface of each of the lens units 11 is provided with the light shielding area 13 so that a predetermined light path is formed in a central area of each of the lens units 11. That is, different from the above embodiment, in this embodiment of the present invention, the light shielding area 13 is provided on the top and / or bottom surface and sides of each of the lens units, not only on the The top surface of the lens unit 11 and the side surfaces of all the lens units 11 are located at the top.

In this embodiment, when the optical module 100 is manufactured, after one lens unit 11 is obtained by molding, the light shielding region 13 needs to be provided on the top surface of the lens unit 11, and then another one is formed. The lens unit 11 forms a predetermined light path between two adjacent lens units 11.

As shown in FIGS. 8A to 8C, it is a schematic diagram of a manufacturing process of an optical module 100 according to the first embodiment of the present invention. According to the present invention, the optical module 100 is suitable for imposition manufacturing, that is, a plurality of the optical modules 100 are manufactured simultaneously. The specific process may be: installing a plurality of the optical elements 21 at a predetermined position of a whole assembled circuit board 50, and making the optical elements 21 electrically connected to the whole assembled circuit board 50, and then using each of the optical Based on the element 21 and the integrated circuit board 50, a plurality of the lens units 11 are integrally formed by mold molding, and each of the lens units 11 is integrally connected, and is controlled at a corresponding position of each of the optical elements 21 by a mold. The curved surface 110 is formed, that is, a first layer of a molded lens unit is formed; further, each of the second lenses 112 is integrally formed on the basis of each of the first lenses 111, so that each of the second lenses and The first lens unit should form the curved surface 110 on the top surface of the second lens unit 112, that is, the second layer of the molded lens unit is formed on the basis of the first layer of the molded lens; Further, the light-shielding area 13 is provided on the lens unit 11; further, other lens units 11 are formed in sequence and the light-shielding areas 13 are respectively formed until the required lens units 11 are all formed; further, the whole The circuit board 50 is cut so that each of the optical modules 100 is independent; further, the light shielding area 13 is provided in each of the lens units 11 so as to form a predetermined light path, such as the lens unit at the top The light shielding area 13 is provided on the top of 11 and the side of each lens unit 11, so that a closed light path is formed inside the optical lens 10, that is, stray light on the side is blocked. Thereby, a plurality of the optical modules 100 are manufactured at one time.

Referring to FIGS. 8A-8C, a plurality of optical modules 100 are manufactured by the imposition operation method. More specifically, a plurality of the optical modules 100 are integrally manufactured by using an imposition molding mold 30A.

The imposition molding mold 30A includes a lower mold 31A and an upper mold group 32A. The lower mold 31A and the upper mold 32 cooperate with each other, and a plurality of the lens units 11 are sequentially formed by a molding material and a molding material. A plurality of the optical lenses 10 are formed. In this embodiment of the present invention, a plurality of the first lens unit 111, the second lens unit 112, and the third The lens unit 113, the fourth lens unit 114, and the fifth lens unit 115.

The upper mold group 32A includes a plurality of upper molds, which are respectively matched with the lower mold 31A to form a continuous multilayer of a plurality of the lens units 11. The number of the upper molds in the upper mold group 32A is related to the number of lenses in the lens unit 11 to be imaged. For example, when five lens units are required, five upper molds are required to fit the lower mold 31A.

Referring to FIGS. 8A-8C, description is made by taking two lens units 11 among five lens units 11 as an example. The upper mold group 32A includes three upper molds, which are a first upper mold 321A and a second upper mold 322A.

It is worth mentioning that in the imposition molding mold 30, the lower mold 31A and each of the upper molds correspond to form a plurality of molding units, and each molding unit corresponds to the molding of one of the lens units 11, and each of the moldings The units may be the same or different, so that a plurality of the lens units 11 with the same or different surface shapes are formed. That is, each of the upper mold and the lower mold in the imposition molding mold 20 cooperates to form a layer of lens unit, and each layer of the lens unit includes a plurality of lens units 11, that is, includes a plurality of corresponding optical modules 20 In this way, the lens units 11 corresponding to a plurality of optical lenses 10 or a plurality of optical modules 100 can be formed at one time, and the plurality of lens units 11 in a layer are continuously distributed.

The first upper mold 321A and the lower mold 31A cooperate to form a plurality of first lenses 111 of the lens unit 11, and the second upper mold 322A and the lower mold 31A cooperate to form a plurality of continuously distributed layers. The second lens unit 112 of the lens unit 11.

The first upper mold 321A and the lower mold 31A have a mold clamping state and a mold opening state. In the mold clamping state, the first upper mold 321A and the lower mold 31A are closed to each other to form a first A molding cavity 301A. The first molding cavity 301A is used to fill a molding material to form a continuous layer of a plurality of the first lens units 111, and the plurality of the first lens units 111 are integrally connected. Specifically, the first molding cavity 301A is configured to receive the integrated circuit board 50, and a molding material is allowed to enter the first molding cavity 301A, so that a plurality of the first integrated circuit boards are integrally formed according to the integrated circuit board 50. A lens unit 111.

The second upper mold 322A and the lower mold 31A have a mold clamping state and a mold opening state. In the mold clamping state, the second upper mold 322A and the lower mold 31A are closed to each other to form a second mold. A molding cavity 302A, the second molding cavity 302A is used to fill a molding material to form a plurality of the first lens units 111 continuously distributed in a layer. Specifically, the second molding cavity 302A is configured to receive the entire assembled circuit board 50 and a plurality of the first lens units 111 that are continuously distributed, and to allow a molding material to enter the second molding cavity 302A so as to be attached. A plurality of the first lens units 111 that are continuously distributed in one layer are integrally formed into a plurality of the second lens units 112.

Further, the lower mold 31A has a lower cavity 310A, and the cavity 310 is used to receive the whole assembled circuit board 50. That is, during molding, the first upper mold 321A and the lower mold 31A When the mold is opened, the integrated circuit board 50 is placed in the lower cavity 310A, so that the integrated circuit board 50 is positioned through the lower cavity 310A so as to be predetermined on the upper side of the integrated circuit board 50 A plurality of the first lens units 111 are formed at positions. That is, the shape of the recessed cavity 310A is adapted to the shape of the whole assembled wiring board 50.

The recessed cavity 310A is recessed inward from the surface of the lower mold 31A.

The first upper mold 321A has a first upper cavity 3210A, and the first upper cavity 3210A is used to fill a molding material to form a plurality of the first lens units 111 continuously distributed. That is, when the first upper mold 321A and the lower mold 31A are closed, the lower cavity 310A of the lower mold 31A and the first upper cavity 3210A of the first upper mold 321A. The first forming cavity 301A is communicated with each other. The first molding cavity 301A has a molding inlet to facilitate feeding molding material into the first molding cavity 301A.

The first upper mold 321A has a first molding surface 3211A for molding the first surface 1101 of a plurality of the first lens units 111 continuously distributed in a layer. That is, the first molding surface 3211A has a plurality of molding regions, which respectively correspond to the top surfaces of the plurality of first lens units 111.

That is, during molding, the entire assembled circuit board 50 is placed in the lower cavity 310A of the lower mold 31A, the first upper mold 321A is closed, and the first upper mold 321A The first molding surface 3211A and the top side of the integrated circuit board 50 form a filling material forming space with the integrated circuit board 50 and a plurality of the optical elements 21, that is, corresponding to a plurality of the first A molding space of the lens unit 1111. In other words, during molding, a molding material enters the first molding cavity 301A, and adheres to the surface of the integrated circuit board 50 and the plurality of optical elements 21 to form a plurality of the first lenses that are continuously distributed. The bottom surface 1112 (or the second surface 1102), and the first molding surface 3211A attached to the first upper mold 321A is integrally formed to form a continuous layer of the top surface 1111 of the plurality of first lens units 111 (Or the first surface 1101), that is, a plurality of the first lens units 111 having a top surface 1111 and a bottom surface 1112 having a predetermined shape are formed. In other words, when forming a plurality of the first lens units 111 that are continuously distributed in a layer, the shape of the top side surface of the forming circuit board 50 and the plurality of optical elements 21 determines the plurality of the first lenses The shape of the bottom surface 1112 of the unit 111 and the first molding surface 3211A of the first upper mold 321A determines the shape of the top surfaces 1111 of the plurality of first lens units 111. The space between the first molding surface 3211A, the integrated circuit board 50, and the plurality of optical elements 21 determines the overall shape of the plurality of first lens units 111. In other words, when a layer of the first lens units 111 that is continuously distributed is formed at a predetermined position of the integrated circuit board 50, a molding material covers a predetermined position of a surface of the integrated circuit board 50, such as including the optical element 21 at a predetermined position, so that the molding material covers the surface of the optical element 21, so that the light enters the optical element 21 through the molding material or the light emitted by the optical element 21 exits through the molding material instead of passing through the air Medium spread. That is, the first lens unit 111 covers the surface of the optical element 21 to form a light propagation medium layer.

Further, the second upper mold 322A has a second upper cavity 3220A, and the second upper cavity 3220A is used for filling a molding material to form a continuous layer of the plurality of second lenses 111. That is, when the second upper mold 322A and the lower mold 31A are closed, the lower cavity 310A of the lower mold 31A and the second upper cavity 3220A of the second upper mold 322A. The second forming cavity 302A is communicated with each other. The second molding cavity 302A has a molding inlet to facilitate feeding of molding material into the second molding cavity 302A.

The second upper mold 322A has a second molding surface 3221A for molding a first layer 1101 and a second surface 1102 of a plurality of the second lens units 112 that are continuously distributed, that is, a layer that is continuously distributed. A plurality of the second lens units 112 form a top surface 1121 and a bottom surface 1122.

That is, during the molding, the entire assembled circuit board 50 with a plurality of the first lens units 111 is placed in the lower cavity 310A of the lower mold 31A, and the second upper mold 322A is closed. , The second molding surface 3221A of the second upper mold 322A and the top surface 1111 (or the first surface 1101) of a plurality of the first lens units 111 continuously distributed in a layer form a filling space for molding material, That is, it corresponds to a plurality of molding spaces of the second lens unit 112. In other words, during molding, the molding material enters the second molding cavity 302A, and adheres to the top surface 1111 of a plurality of the first lens units 111 that are continuously distributed in one layer to form another layer of the plurality of second lenses that are continuously distributed. The bottom surface 1122 of the lens unit 112 is integrally formed with the second molding surface 3221A of the second upper mold 322A to form a continuous layer of the top surface 1121 of the second lens unit 112 (or The first surface 1101), that is, a plurality of the second lens units 112 having a top surface 1121 and a bottom surface 1122 having a predetermined shape and continuously distributed are formed. In other words, when a plurality of the second lens units 112 are formed, the shape of the top surfaces 1121 of the plurality of first lens units 111 that are continuously distributed on one layer determines the plurality of the second lenses 111 that are continuously distributed on another layer. The shape of the bottom surface 1122 and the shape of the second molding surface 3221A of the second upper mold 322A determine the shape of the top surface 1121 of a plurality of the second lens units 112 continuously distributed in a layer. The space between the second molding surface 3221A of the upper mold 322A and the plurality of first lens units 111 determines the overall shape of the plurality of second lens units 112.

As shown in FIG. 9, it is a schematic diagram of an optical module 100 according to a third embodiment of the present invention. As shown in FIG. 10, it is an exploded view of an optical module 100 according to a third embodiment of the present invention. Referring to FIGS. 9 to 12, in this embodiment of the present invention, the optical lens 10 is connected to the optical element 20 through a connection medium 60. That is, the optical lens 10 is not directly connected to the optical element 20. The connection medium 60 is exemplified but not limited to glue, molding material. The connection medium 60 may be a transparent material.

Further, referring to FIGS. 9 and 10, in this embodiment of the present invention, the optical element 20 has a mounting groove 14, and the mounting groove 14 is used for mounting the optical element 20. Preferably, the optical element 20 and the optical lens 10 can be actively aligned and assembled.

As shown in FIG. 11, it is a schematic diagram of a forming process of an optical module 100 according to a third embodiment of the present invention. In this embodiment of the present invention, the forming process of the optical module 100 may be: forming the optical lens 10 integrally and sequentially by a mold, and forming the optical lens 10 on one surface of the optical lens 10 during molding. A mounting groove 14; further, the connection medium 60 is provided in a predetermined area of the optical element 20, for example, glue is provided around the optical element 21; further, the optical lens 10 is mounted on the optical element 20, and It is actively calibrated so that the optical paths of the optical lens and the optical element 20 are consistent, and finally the optical lens 10 and the optical element 20 are fixed.

Referring to FIG. 11, the optical lens 10 is integrally manufactured and molded by a molding mold 30B. Preferably, the optical module 100 and the optical lens 10 are made by molding integrally by the molding die 30B.

The first lens unit 111 forms the mounting groove 14, and the mounting groove 14 is adapted to fit the surface shape of the optical element 20, so that when the optical lens 10 is mounted on the optical element 20, the first A lens unit 111 is mounted away from the optical element 22 and the electrical connection element 211. In other words, when the optical lens 10 is mounted on the optical element 20, the optical element 21 and the electrical connection element 211 are received in the mounting groove.

Further, the mounting groove 14 includes a side region 1401 and an inner region 1402. The side region 1401 corresponds to an edge region of the optical element 21, and the inner region 1402 corresponds to a central region of the optical element 21. Further, the side region 1401 of the mounting groove 14 is used to receive the electrical connection element 211 electrically connected to an edge region of the optical element 21, and the central region 1402 of the mounting groove 14 is used to receive the optical The central area of the element 21.

Further, the shape of the side region 1401 is adapted to the shape of the electrical connection element, such as forming a trapezoidal structure, and the shape of the inner region 1402 is adapted to the surface shape of the optical element 21, such as a plane extension.

Further, the depth D2 of the side region 1401 is greater than the depth D1 of the central region 1402, so that the bottom surface 1112 (or the second surface 1102) of the first lens unit 111 is closer to the surface of the optical element 21.

The molding mold 30B includes a lower mold 31B and an upper mold group 32B. The lower mold 31B and the upper mold 32B cooperate with each other, and the lens unit 11 is sequentially formed by using a molding material and a molding material. Optical lens 10. In this embodiment of the present invention, the first lens unit 111, the second lens unit 112, the third lens unit 113, and the fourth lens unit 114 are integrally molded in this order by the molding die 30B. And the fifth lens unit 115.

The upper mold group 32B includes a plurality of upper molds, which are respectively matched with the lower mold 31B to form each of the lens units 11. The number of upper molds in the upper mold group 32B is related to the number of lenses in the lens unit 11 to be imaged. For example, when five lens units are required, five upper molds are required to fit the lower mold 31B. Referring to FIG. 11, description is made by taking three lens units 11 among five lens units 11 as an example. The upper mold group 32B includes three upper molds, which are a first upper mold 321B, a second upper mold 322B, and a third upper mold 323B. The first upper mold 321B and the lower mold 31B cooperate to form a first lens 111 of the lens unit 11, and the second upper mold 322B and the lower mold 31B cooperate to form the first lens 111 of the lens unit 11. The two lens units 112, the third mold 323B and the lower mold 31B cooperate to form the fifth lens unit 115 of the lens unit 11.

The first upper mold 321B and the lower mold 31B have a mold clamping state and a mold opening state. In the mold clamping state, the first upper mold 321B and the lower mold 31B are closed to each other to form a first A molding cavity 301B. The first molding cavity 301B is used to fill a molding material to form the first lens unit 111.

The second upper mold 322B and the lower mold 31B have a mold clamping state and a mold opening state. In the mold clamping state, the second upper mold 322B and the lower mold 31B are closed to each other to form a second mold. A molding cavity 302B. The second molding cavity 302B is used to fill a molding material to form the first lens unit 111. Specifically, the second molding cavity 302B is used to receive the optical element 20 and the first lens unit 111, and a molding material is allowed to enter the second molding cavity 302B so as to be integrated with the first lens unit 111. The second lens unit 112 is molded.

Further, the third lens unit 113 and the fourth lens unit 114 are sequentially formed by the other two upper molds.

The third upper mold 323B and the lower mold 31B have a mold clamping state and a mold opening state. In the mold clamping state, the third upper mold 323B and the lower mold 31B are closed with each other to form a third mold. A molding cavity 303B. The third molding cavity 303B is used to fill a molding material to form the fifth lens unit 115. Specifically, the third molding cavity 303B is configured to receive the first lens unit 111, the second lens unit 112, the third lens unit 113, and the fourth lens unit 114, and allow a molding material to enter The third molding cavity 303B is used to form the fifth lens unit 115 integrally with the fourth lens 111.

Further, the lower mold 31B has a surface forming portion 311B, which is used to mold a bottom surface 1112 of the first lens unit 111, that is, a bottom surface 1112 of the first lens unit 111 ( Or second side 1102). The shape of the surface forming portion 311B matches the shape of the bottom surface 1112 of the first lens unit 111, such as a complementary shape. For example, when the shape of the bottom surface 1111 of the first lens unit 111 is convex, the surface is formed. The portion 311B is a concave portion, so that the molding material adheres to the bottom surface 1111 of the concave portion surface to form a convex structure. When the shape of the bottom surface 1111 of the first lens unit 111 is concave, the surface forming portion 311B is a convex portion. In order to facilitate the molding material to adhere to the bottom surface 1111 of the convex surface to form a concave structure.

More specifically, in this embodiment of the present invention, the lower mold 31B has a mold clamping surface 3101B, and the mold clamping surface 3101B is used for clamping with the upper module 32B. The surface molding portion 311B has a lower molding surface 3102B, and the lower molding surface 3102B is used for molding a bottom surface 1112 of the first lens unit 111. The shape of the lower molding surface 3102B matches the shape of the bottom surface of the first lens unit 111, such as a complementary shape. For example, when the shape of the bottom surface 1111 of the first lens unit 111 is convex, the lower molding surface 3102B is a concave surface, so that the molding material adheres to the concave surface to form the bottom surface 1111 of the convex structure. When the shape of the bottom surface 1111 of the first lens unit 111 is concave, the lower molding surface 3102B is a convex surface, so that The molding material adheres to the convex surface to form the bottom surface 1111 of a concave structure.

Further, the lower molding surface 3102B includes a first surface area 31021B and a second surface area 31022B, the first surface area 31021B corresponds to an edge area of the optical element 21, and the second surface area 31022B corresponds to the The central area of the optical element 21. Furthermore, the first region corresponds to the electrical connection element 211, and the second region 31022B corresponds to an inner region of the electrical connection element 211 of the optical element 21.

Further, in this embodiment of the present invention, the first surface area 31021B is a convex surface for forming the edge area 1401 of the groove 14, and the second surface area 31022B is a concave plane. In forming the inner region 1402. That is, the first surface area 31021B extends outward from the mold clamping surface 3101B. For example, the first surface area 31021B extends obliquely to form a boss surface, and the second surface area 31022B extends horizontally from the inside of the second surface area 31022B. Form an extended plane. The height H1 of the top side of the first surface area 31021B from the mold clamping surface 3101B is greater than the height H2 of the top side of the second surface area 31022B from the mold clamping surface 3101B.

The first upper mold 321B has a first upper cavity 3210B, and the first upper cavity 3210B is used for filling a molding material to form the first lens unit 111. That is, when the first upper mold 321B and the lower mold 31B are closed, the surface forming portion 311B of the lower mold 31B is received in the first upper cavity of the first upper mold 321B. 3210B forms the first molding cavity 301B. The first molding cavity 301B has a molding inlet to facilitate feeding molding material into the first molding cavity 301B.

The first upper mold 321B has a first molding surface 3211B for molding the first surface 1101 of the first lens unit 111. That is, during molding, the first upper mold 321B and the The lower mold 31B is closed to form the first molding cavity 301B, that is, the molding cavity of the first lens unit 1111. In other words, in this embodiment, the top surface 1111 and the bottom surface of the first lens unit 111 1112 are formed by the forming mold 30B instead of being attached to the optical element 20.

The first upper mold 321B is clamped to the lower mold 31B. The first molding surface 3211B of the first upper mold 321B and the lower molding surface 3102B of the lower mold form the third molding cavity. 303B, that is, the molding space corresponding to the first lens unit 1111. In other words, during molding, a molding material enters the first molding cavity 301B, and the first molding surface 3211B attached to the first upper mold 321B is integrally formed to form the top surface of the first lens unit 111. 1111 (or the first surface 1101), the bottom surface 1112 (or the second surface 1102) is integrally formed with the lower molding surface 3102B attached to the lower mold 31B to form a top surface 1111 and a bottom surface having a predetermined shape 1112 of the first lens unit 111. In other words, when forming the first lens 111, the shape of the first molding surface 3211B of the first upper mold 321B determines the shape of the top surface 1111 of the first lens unit 111, and the shape of the lower mold 31B The shape of the lower molding surface 3102B determines the shape of the bottom surface 1112 of the first lens unit 111, the first molding surface 3211B of the first upper mold and the lower molding surface 3202B of the lower mold 32B. The space between them determines the overall shape of the first lens unit 111.

Further, the second upper mold 322B has a second upper cavity 3220B, and the second upper cavity 3220B is used for filling a molding material to form the second lens 111. That is, when the second upper mold 322B and the lower mold 31B are closed, the first lens unit 111 of the lower mold 31B is received in the second concave of the second upper mold 322B. The cavity forms the second molding cavity 302B. The second molding cavity 302B has a molding inlet to facilitate the feeding of molding material into the second molding cavity 302B.

The second upper mold 322B has a second molding surface 3221B for molding the first surface 1101 of the second lens unit 112. That is, during molding, the first lens unit 111 is positioned on the lower mold 31B, the second upper mold 322B is closed, and the second molding surface 3221B of the second upper mold 322B and The top surface 1111 (or the first surface 1101) of the first lens unit 111 forms a filling space of a molding material, that is, a molding space corresponding to the second lens unit 112. In other words, during molding, a molding material enters the second molding cavity 302B, adheres to the top surface 1111 of the first lens unit 111, forms the bottom surface 1122 of the second lens unit 112, and adheres to the The second molding surface 3221B of the second upper mold 322B is integrally formed to form the top surface 1121 (or the first surface 1101) of the second lens unit 112, that is, a top surface 1121 and a bottom surface 1122 having a predetermined shape are formed The second lens unit 112. In other words, when the second lens unit 112 is formed, the shape of the top surface 1121 of the first lens unit 111 determines the shape of the bottom surface 1122 of the second lens 111, and the position of the second upper mold 322B. The shape of the second molding surface 3221B determines the shape of the top surface 1121 of the second lens unit 112, and the space between the second molding surface 3221B of the second upper mold 322B and the first lens unit 111 The overall shape of the second lens unit 112 is determined.

Further, the third upper mold 323B has a third upper cavity 3230, and the third upper cavity 3230 is used for filling a molding material to form the fifth lens unit 115. That is, when the third upper mold 323B and the lower mold 31B are closed, the first lens unit 111, the second lens unit 112, the third lens unit 113, and the fourth lens 113 is located in the lower mold 31B and is received in the third upper cavity 3230 of the third upper mold 323B to form the third molding cavity 303B. The third molding cavity 303B has a molding inlet to facilitate the feeding of molding material into the third molding cavity 303B.

The third upper mold 323B has a third molding surface 3231B for molding the first surface 1101 of the fifth lens unit 115. That is, during molding, the first lens unit 111, the second lens unit 112, the third lens unit 113, and the fourth lens 113 are positioned in the lower mold 31B, and the third The upper mold 323B is closed, and the third molding surface 3231B of the third upper mold 323B and the top surface (or the first surface 1101) of the fourth lens unit 114 form a filling space of molding material, that is, corresponding to A molding space of the fifth lens unit 115. In other words, during molding, the molding material enters the third molding cavity 303B, adheres to the first surface 1101 of the fourth lens unit 114 to form the second surface 1102 of the fifth lens unit 115, and adheres to The third molding surface 3231B of the third upper mold 323B is integrally formed to form the top surface (or the first surface 1101) of the fifth lens unit 115, that is, a first surface 1101 and a first surface having a predetermined shape are formed. The fifth lens unit 115 on the two sides 1102. In other words, when the fifth lens unit 115 is formed, the shape of the top surface 1101 of the fourth lens unit 114 determines the shape of the bottom surface 1102 of the fifth lens unit 115, and the shape of the third upper mold 323B The shape of the third molding surface 3231B determines the shape of the top surface 1101 of the fifth lens unit 115, and the distance between the third molding surface 3231B of the third upper mold 323B and the fourth lens unit 114 The space determines the overall shape of the fifth lens unit 115.

Further, the first lens unit 111, the second lens unit 112, the third lens unit 113, the fourth lens unit 114, and the fifth lens are sequentially formed by the molding die 30B. In the process of the unit 115, the light-shielding area 13 may be optionally set, for example, after the first lens unit 111 is obtained by molding the first upper mold 32B and the lower mold 31B, the first lens unit 111 is The first surface 1101 of 111 forms the light-shielding area 13. For example, the light-shielding area 13 is formed in a predetermined area of the first surface 1101 by means of attachment, electroplating, galvanization, vacuum sputtering, coating, spraying, The remaining portion of the first surface 1101 forms the light-transmitting region 12, and light passes through the light-transmitting region 12. Of course, the lens on the top layer can also be formed integrally, such as the fifth lens unit 115 to form the light-shielding region 13 as a whole, for example, the light-shielding region 13 is formed on the side wall of the optical lens 10 and a predetermined region on the top surface.

In this embodiment of the present invention, the fifth lens unit 115 is a lens located at the top, that is, the first surface 1101 of the fifth lens unit 115 is a light incident from the optical lens 10 and an air medium. Surface or exit surface. The second surface 1102 of the fifth lens unit 115 is a superimposed surface, that is, a surface combined with the first surface 1101 of the fourth lens unit 114, the first lens unit 111, the second lens unit 112 The surfaces of the two adjacent lenses in the third lens unit 113 and the fourth lens unit 114 are joint surfaces, that is, the first and second surfaces of the two adjacent lenses overlap each other. The first lens 114 is a lens located at the bottom, that is, the second surface 1102 of the first lens unit 111 is a light incident surface or an outgoing surface of the optical lens and an air medium or a medium connected to the optical lens.

Thereby, the optical lens 10 is sequentially formed by the forming mold 30B. The optical lens 10 can be assembled on the optical element 20 to form an optical module.

It is worth mentioning that, in this embodiment of the present invention, the forming process of the single optical lens 10 is described as an example, but in other embodiments of the present invention, it can also be schematically shown in FIGS. 8A-8C. A plurality of the optical lenses are formed and manufactured at a time by a nesting operation process, and the present invention is not limited in this regard.

FIG. 12 is a schematic diagram of another forming process of the optical module 100 according to the third embodiment of the present invention. In this embodiment, the connection medium 60 is filled in the mounting groove 14, and the optical element 20 is fixedly connected to the optical lens 10 through the connection medium 60. Specifically, the forming process of the optical module 100 may be: forming the optical lens 10 integrally and sequentially by a mold, and forming the mounting groove 14 during the first molding; further, forming the optical lens 10 The connection medium 60 is set upside down, the mounting slot 14 of the optical lens 10 is set, further, the optical element 20 is mounted on the optical lens 10, and active calibration is performed to make the optical lens 10 and the optical element 20 have the same optical path. Finally, the optical lens 10 and the optical element 20 are fixed.

As shown in FIG. 13, it is a schematic diagram of an optical module 100 according to a fourth embodiment of the present invention. According to this embodiment of the present invention, the optical module 100 includes an optical lens 10 and an optical element 20. The optical lens 10 is mounted on the optical element 20. By way of example and not limitation, the optical lens 10 may be fixedly mounted on the optical element 20 through a connection medium 60.

There is an air gap 40 between the optical lens 10 and the optical element 20, that is, the light passing through the optical lens 10 passes through the air gap 40 and reaches the optical element 20. Alternatively, the light emitted from the optical element 20 reaches the optical lens 10 through the air gap 40.

Similar to the first embodiment of the present invention, the optical lens 10 includes at least two lens units 11, and each of the lens units 11 is stacked and attached. Furthermore, the lens unit 11 located above is integrally formed by attaching the lens unit 11 located below. Furthermore, the lens unit 11 is formed by integrally forming a transparent material, for example, by molding. The refractive indices of two adjacent lens units 11 are different, so that light rays are refracted when one lens unit 11 enters the other lens unit 11 instead of traveling in the same straight line. For example, the refractive index range of each of the lens units 11 is 1.1 to 1.9, and preferably, the refractive index range of the lens units 11 is 1.4 to 1.55.

The number of the lens units 11 may be 1 to 40, and preferably, the number of the lens units 11 may be 2 to 15. It is worth mentioning that in the traditional lens, the refraction and propagation of light are accomplished through the alternation of the lens and the air gap 40, and in the present invention, the propagation of light is completed by each of the lens units 11 separately, compared to the air medium. There is a certain difference in refractive index, or the refractive index is relatively low. In the present invention, the effect of light propagation caused by the absence of the air gap 40 is compensated by the superposition of the multiple layers of the lens unit 11. The number of layers of the lens unit 11 is 1 to 40 layers, and preferably 2 to 15 layers. However, due to the compact molding structure, a more compact and miniaturized optical module can be provided relatively.

Referring to FIG. 13, each of the lens units 11 has at least one curved surface 110 so that the lens unit 11 forms a lens structure with a predetermined shape. The curved surface 110 is exemplified but not limited to a convex surface or a concave surface. More specifically, in some embodiments, the curved surface 110 of the lens unit 11 is located in a central area, that is, the central area of each of the lens units 11 has a curved structure and the peripheral area has a flat structure, or Approaching a flat structure. Those skilled in the art should understand that the area size and specific shape of the curved surface 110 are not limited by the present invention.

Further, at least one of the lenses in each of the lens units 11 has two curved surfaces 110, and the two curved surfaces 110 constitute a lens structure.

Referring to FIG. 13, the optical element 20 includes an optical element 21, a circuit board 22, and a base layer 23. The optical element 21 is disposed on the circuit board 22 and communicates with the circuit board 22. The base layer 23 covers the optical element 21 and the circuit board 22. The base layer 23 is a transparent layer.

That is, the air gap 40 is formed between the base layer 23 and the optical lens 10.

The base layer 23 has a top surface 231. In some embodiments, the top surface 231 of the base layer 23 is a plane, and the optical lens 10 is mounted on the plane.

In some embodiments, the top surface 231 of the base layer is a curved surface, and the optical lens 10 is mounted on the curved surface. In particular, in this embodiment of the present invention, the base layer top surface 231 is a curved surface, and the base layer top surface 231 and the optical lens 10 form the air gap 40. That is, in this embodiment of the present invention, the base layer 231 forms the lens unit 11. When light enters the air gap 40 through the medium in which the base layer 23 is located, or light enters through the air gap 40 In the case of the base layer 23, since the refractive index of the air gap 40 and the base layer 23 are different, refraction of light occurs.

In some embodiments, the air gap 40 can also be filled with other media, such as liquids and solids, so as to form two different light propagation media, so that when light enters from one medium to another, it generates refraction, which is the role of a lens . In addition, since the top surface 231 of the base layer 23 is a curved surface, even if parallel light is incident, the light will be refracted, which further reflects the function of a lens.

FIG. 14 is a schematic diagram of a process of forming an optical module 100 according to a fourth embodiment of the present invention. The forming process of the optical module 100 may be: forming the optical lens 10 integrally and sequentially by a mold; mounting the optical element 21 on the circuit board 22, and further using the optical element 21 and the circuit board The base layer 23 forms the base layer 23 to form the optical element 20; further, the optical lens 10 is mounted on the optical element 20, and is actively calibrated, and finally the optical module 100 is fixed.

It is worth noting that, in the third embodiment and the fourth embodiment described above, when the optical lens 10 and the optical element 20 are assembled, they can be actively calibrated to improve the optical lens 10 and the optical lens. The optical axis of the optical element 20 is uniform, so that the imaging quality can be improved.

FIG. 15 is a schematic diagram of an optical module 100 according to a fifth embodiment of the present invention. According to this embodiment of the present invention, the optical lens 10 includes an optical interference element 15 for generating an interference pattern 1. Preferably, the optical interference element 15 is disposed on a top end of the optical lens 10.

Furthermore, the optical interference element 15 is used for interfering with the light emitted from the optical lens 10 to generate a specific pattern for judging content that cannot be reflected in conventional photos such as depth information. FIG. 16 is a schematic diagram of different patterns related to the optical module 100 according to the fifth embodiment of the present invention. The pattern generated by the optical interference element 15 is exemplified, but not limited to, uniformly distributed diffraction patterns, randomly distributed uniform patterns (to make the light at all positions as uniform as possible), and diffraction patterns or uniform patterns according to the position and number of light sources. Pattern. It is worth mentioning that the surface below the optical interference element 15 may be a spherical structure or an aspherical structure, such as a convex surface, a concave surface, a groove, or the like. That is, the shape of the top surface of the lens unit 11 at the top of the lens 10 may be a spherical structure or an aspherical structure, such as a convex surface, a concave surface, a groove, or the like.

FIG. 17 is a schematic diagram of an optical element 20 according to a sixth embodiment of the present invention. According to this embodiment of the present invention, the optical element 20 includes an optical element 21, a circuit board 22 and a base layer 23. The optical element 21 is electrically connected to the circuit board 22, and the base layer 23 fixes the relative positions of the optical element 21 and the circuit board 22.

According to this embodiment of the present invention, the base layer 23 integrally connects the side surfaces of the circuit board 22 and the optical element 21, thereby fixing the relative positions of the optical element 21 and the circuit board 22.

Further, the base layer 23 surrounds the outside of the optical region of the optical element 21. The base layer 23 has a base layer top surface 231 for providing a flat mounting plane. Preferably, the top surface 231 of the base layer 23 is parallel to the surface of the optical element 21, for example, parallel to the surface of the photosensitive element, so as to ensure that the optical axis of the mounted element and the optical element 21 are consistent. Sex.

Further, the base layer 23 is a transparent material or an opaque material, and is formed by integral molding.

The forming process of the optical element 20 may be: electrically connecting the optical element 21 to the circuit board 22, and then covering the optical region of the optical element 21 and the optical element 21 and the circuit board 22 through a mold. Further, the side surfaces of the optical element 21 and the upper surface not used for work are molded, the relative positions of the optical element 21 and the circuit board 22 are fixed, the base layer 23 is formed, and the The base layer 23 has a flat top surface 231 of the base layer.

FIG. 18 is a schematic diagram of an optical element according to a seventh embodiment of the present invention. The optical element 20 includes an optical element 21, a circuit board 22, and a base layer 23. The base layer 23 covers the optical element 21. Therefore, a non-air-transmitting medium layer is formed directly above the optical element 21.

Further, the shape of the bottom surface of the base layer 23 is consistent with the optical element 21, so that the base layer 23 is covered with the optical element 21 in a close fit. For example, in some embodiments, the base layer 23 is covered on the optical element 21 by an integral molding method. Of course, the base layer 23 may also be manufactured separately to form a bottom surface that is compatible with the optical element 21 so as to cover the base layer to the optical element 21 in a close manner. That is, in this way, a non-air layer propagation medium is formed above the optical element 23.

Preferably, the base layer 23 is a transparent medium, and the material of the base layer 23 is selected from organic materials such as epoxy resin, silicon material, plastic, PC, PMMA, and aerosol, or organic polymers.

The base layer 23 has a base layer top surface 231. In this embodiment, the base layer top surface 231 is a plane. In other implementations, the top surface 231 of the base layer may be a curved surface.

The base layer top surface 231 of the base layer 23 may be used to provide an installation position or provide a molding foundation.

Further, the base 23 covers the optical element 21 and the circuit board 22, and in particular, the base 23 is integrally formed with the optical element 21 and the circuit board 22, thereby packaging the optical element. Fixed to the circuit board 22.

Preferably, the optical element 21 is a light source, such as a VCSEL, so that the light from the light source is transmitted through the base layer 23 and provides a better heat dissipation effect.

It is worth mentioning that the base layer 23 may be the first lens unit 111 of the first embodiment, that is, constitute a lens structure. The base layer 23 may have a curved surface, and the curved surface is the only optical path of the optical element 21, so as to refract light emitted from the optical element or light emitted from the optical element.

According to the above embodiments of the present invention, the present invention provides a method for manufacturing an optical lens, which includes steps:

(A) integrally forming a first lens unit; and

(B) forming another lens unit integrally with the first lens unit.

In the step (A), the first surface and the second surface of a second lens unit are integrally formed by a mold.

In step (B), the first surface of the second lens unit is formed on the first surface of the first lens unit, and the first surface of the second lens unit is integrally formed on the mold.

The method further includes the step of sequentially forming a plurality of laminated lens units.

According to the above embodiments of the present invention, the present invention provides a method for manufacturing an optical lens, which includes steps:

(A) integrally forming a layer of a plurality of continuously distributed first lens units; and

(B) A layer of a continuously distributed second lens unit is integrally formed by attaching a plurality of the continuously distributed first lens units.

In the step (a), the first surface and the second surface of a plurality of continuously distributed second lens units are integrally formed by a mold.

The step (b) includes the steps of: integrally forming a first surface of another layer of the first lens unit by attaching a layer of the first surface of the second lens unit; The first side of the mirror unit.

The method includes the steps of: dividing a plurality of continuously distributed optical lenses to form a plurality of optical lenses.

Those skilled in the art should understand that the embodiments of the present invention shown in the above description and the accompanying drawings are merely examples and do not limit the present invention. The object of the invention has been completely and effectively achieved. The function and structural principle of the present invention have been shown and explained in the embodiments, and the embodiments of the present invention may have any deformation or modification without departing from the principle.

100‧‧‧ Optical Module

10‧‧‧ Optical lens

11‧‧‧ lens unit

110‧‧‧ curved surface

120‧‧‧ edge face

1101‧‧‧ the first side

1102‧‧‧Second Side

111‧‧‧first lens unit

112‧‧‧Second lens unit

113‧‧‧third lens unit

114‧‧‧Fourth lens unit

115‧‧‧Fifth lens unit

1111‧‧‧Top

1122‧‧‧Underside

12‧‧‧light-transmitting area

13‧‧‧ shaded area

14‧‧‧Mounting slot

1401‧‧‧Edge

1402‧‧‧ Inner area

15‧‧‧optical interference element

20‧‧‧ Optics

21‧‧‧optical element

22‧‧‧Circuit board

211‧‧‧Electrical connection element

23‧‧‧ Grassroots

231‧‧‧ Top surface of grassroots

30‧‧‧Forming mold

31‧‧‧mould

32‧‧‧Up mold group

321‧‧‧The first upper mold

322‧‧‧The second upper mold

323‧‧‧Third upper mold

301‧‧‧first molding cavity

302‧‧‧Second molding cavity

303‧‧‧Third molding cavity

310‧‧‧Concave cavity

3210‧‧‧First upper cavity

3211‧‧‧First molding surface

3220‧‧‧Second upper cavity

3221‧‧‧Second molding surface

3230‧‧‧ Third upper cavity

3231‧‧‧Third molding surface

50‧‧‧Integrated circuit board

30A‧‧‧Mosaic forming mold

31A‧‧‧Lower mold

32A‧‧‧Up Mold Set

321A‧‧‧The first upper mold

322A‧‧‧Second upper mold

301A‧‧‧First molding cavity

302A‧‧‧Second molding cavity

310A‧‧‧Down cavity

3210A‧‧‧First upper cavity

3211A‧‧‧First molding surface

3220A‧‧‧Second upper cavity

3221A‧‧‧Second molding surface

30B‧‧‧Forming mold

31B‧‧‧ Lower mold

32B‧‧‧Up Mold Set

321B‧‧‧The first upper mold

322B‧‧‧Second upper mold

323B‧‧‧Third upper mold

301B‧‧‧First molding cavity

302B‧‧‧Second molding cavity

303B‧‧‧Third molding cavity

311B‧‧‧Surface forming department

3101B‧‧‧Clamping surface

3102B‧‧‧Lower molding surface

31021B‧‧‧First area

31022B‧‧‧Second District

3210B‧‧‧First upper cavity

3220B‧‧‧Second upper cavity

3221B‧‧‧Second molding surface

3230‧‧‧ Third upper cavity

3231B‧‧‧Third molding surface

40‧‧‧air gap

60‧‧‧Connecting media

FIG. 1 is a schematic perspective view of an optical module according to a first embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of an optical module according to a first embodiment of the present invention. FIG. 3 is a schematic diagram of an optical path according to the first embodiment of the present invention. FIG. 4 is a schematic diagram of another optical path according to the first embodiment of the present invention. FIG. 5 is a schematic diagram of a forming process of an optical module according to the first embodiment of the present invention. FIG. 6 is a schematic diagram of an optical module according to a second embodiment of the present invention. FIG. 7 is a partially exploded view of an optical module according to a second embodiment of the present invention. 8A to 8C are manufacturing schematic diagrams of an optical module according to a second embodiment of the present invention. FIG. 9 is a schematic diagram of an optical module according to a third embodiment of the present invention. FIG. 10 is an exploded view of an optical module according to a third embodiment of the present invention. FIG. 11 is a schematic diagram of a forming process of an optical module according to a third embodiment of the present invention. FIG. 12 is a schematic diagram of another forming process of an optical module according to a third embodiment of the present invention. FIG. 13 is a schematic diagram of an optical module according to a fourth embodiment of the present invention. FIG. 14 is a schematic diagram of a process of forming an optical module according to a fourth embodiment of the present invention. FIG. 15 is a schematic diagram of an optical module according to a fifth embodiment of the present invention. FIG. 16 is a schematic diagram of different interference patterns formed by an optical module according to a fifth embodiment of the present invention. FIG. 17 is a schematic diagram of an optical element according to a sixth embodiment of the present invention. FIG. 18 is a schematic diagram of an optical element according to a seventh embodiment of the present invention.

Claims (35)

An optical module, comprising: an optical lens, the optical lens includes at least two lens units, the two lens units have a first surface and a second surface, and two adjacent lens units are adjacent to each other. The first surface and the second surface are overlapped, and the refractive indices of two adjacent lens units are different; and an optical element, the optical element includes an optical element and a circuit board, and the optical element is electrically Connected to the circuit board, the optical lens is located on the optical path of the optical element. According to the optical module of claim 1, the first surface and the second surface of at least one of the lens units each have a curved surface, and a lens is formed between the two curved surfaces. According to the optical module of claim 2, at least one of the first surface and the second surface of the lens unit has an edge surface, and the edge surface surrounds the curved surface. According to the optical module according to item 3 of the patent application scope, wherein the edge surface of the first surface or the second surface of one of the lens units is a flat surface. The optical module according to item 1 of the patent application scope, wherein the optical lens has a light-shielding area to form a predetermined light path, and the light-shielding area is disposed on at least part of a top surface, a side surface, and / or the optical lens. Underside. The optical module according to item 5 of the scope of patent application, wherein the light-shielding area is formed by attaching, electroplating, vacuum sputtering, coating or spraying. According to the optical module according to any one of claims 1 to 6, the second surface of one of the lens units is integrally formed with the first surface of the other lens unit. According to the optical module according to any one of claims 1 to 6, the second surface of one of the lens units is bonded to the first surface of the other lens unit. According to the optical module according to any one of claims 1 to 6, wherein the lens unit at the bottom has a mounting slot to make the optical lens suitable for mounting with the optical element, Cover the optical element. The optical module according to item 9 of the scope of patent application, wherein the optical element is a photosensitive element or a light source. According to the optical module according to any one of claims 1 to 6, the lens unit on the bottom side of the optical lens is integrally molded to cover the optical element. The optical module according to any one of claims 1 to 6, wherein the lens unit is integrally formed by molding a transparent material. According to the optical module according to any one of claims 1 to 6, the first surface of one of the lens units is integrally formed by a molding die. According to the optical module according to any one of claims 1 to 6, the number of layers of the lens unit is 1 to 40. According to the optical module according to item 14 of the scope of patent application, the number of layers of the lens unit is 2 to 15 layers. According to the optical module according to any one of claims 1 to 6, the refractive index range of the lens unit is 1.1 to 1.9. According to the optical module according to item 16 of the scope of patent application, the refractive index of the lens unit ranges from 1.4 to 1.55. According to the optical module according to any one of claims 1 to 6, the center thickness of the lens unit ranges from 0.1 mm to 0.6 mm. The optical module according to any one of claims 1 to 6, in which the optical lens includes an optical interference element, and the optical interference element is disposed on the top of the optical lens so that The optical lens produces an interference pattern. An optical module, comprising: an optical lens; and an optical element, the optical element includes an optical element and a circuit board, the optical element is electrically connected to the circuit board, and the base layer is transparent to the ground The optical element is covered, and the optical lens is located on an optical path of the optical element. According to the optical module of claim 20, wherein the base layer integrally covers the optical element. According to the optical module of claim 20, wherein the base layer is bonded to the optical element. According to the optical module of claim 20, the base layer has a top surface, and the top surface is a flat surface. According to the optical module of claim 20, wherein the base layer has a curved surface, the curved surface is located on the optical path of the optical element. According to the optical module of claim 20, wherein the base layer is provided with a light shielding area so that the base layer forms a predetermined light path. The optical module according to any one of claims 20 to 25 in the scope of patent application, wherein the optical lens includes a lens unit, the lens unit has a first surface, a first second surface, and a first surface Opposed to the first and second faces, the second face of the lens unit is superposed on the base layer. The optical module according to any one of claims 20 to 25 in the scope of patent application, wherein the optical lens includes a lens unit, the lens unit has a first surface and a first second surface, and the lens The first surface and the second surface of the unit each have a curved surface, and a lens is formed between the two curved surfaces. According to the optical module according to any one of the 20th to the 25th of the scope of patent application, wherein the optical lens includes at least two lens units, and the two lens units have a first surface and a second surface, respectively. Adjacent the first surface and the second surface of the lens unit are overlapped. According to the optical module of claim 27, wherein the optical lens has a light-shielding area to form a predetermined light path, the light-shielding area is disposed on at least a part of a top surface of the optical lens, at least a part of a top surface, Side and / or bottom. According to the optical module of claim 27, an air gap is formed between the first lens unit and the base layer. According to the optical module according to item 28 of the patent application scope, the second surface of one of the lens units is integrally formed with the first surface of the other first lens unit. According to the optical module according to item 28 of the scope of patent application, the refractive indices of two adjacent lens units are different. According to the optical module according to item 28 of the scope of patent application, the number of layers of the lens unit is 1 to 40 layers. According to the optical module according to item 28 of the scope of patent application, the refractive index range of the lens unit is 1.1 to 1.9. According to the optical module of claim 28, wherein the optical lens includes an optical interference element, the optical interference element is disposed on the top of the optical lens so that the optical lens generates an interference pattern.