TWI648585B - Split lens integrating focusing mechanism, assembling method and camera module thereof - Google Patents

Abstract

The present invention relates to a split lens integrating a focusing mechanism, an assembly method thereof, and a camera module, wherein the split lens includes a focusing mechanism and a lens assembly, and the lens assembly includes at least two optical lenses and at least one lens barrel component. And a bearing structure, each of the lens barrel components carries at least one piece of the optical lens to form at least one lens to be adjusted, and the bearing structure carries at least one piece of the optical lens to form a fixed lens, and the lens to be adjusted It is pre-assembled on the fixed lens, and its assembly position relative to the fixed lens is suitable to be adjusted, wherein the fixed lens is installed inside the focusing mechanism through the supporting structure, and is energized with the focusing mechanism. And the movement is further suitable for focusing, the assembly method is simple, the process is less, the assembly tolerance chain is reduced, it is beneficial to improve production efficiency and yield, and reduce manufacturing costs.

Description

Split lens integrating focusing mechanism, assembling method and camera module thereof

The invention relates to a split-type lens with integrated focusing mechanism, assembling method and camera module thereof, and particularly relates to a lens with integrated focusing mechanism, assembling method and camera module thereof.

With the increasingly fierce competition in the camera module market, falling camera module manufacturing costs, improving production efficiency, and improving imaging quality have become the goals pursued by camera module manufacturers.

Generally, the focus camera module is composed of important components such as the lens, focusing mechanism, and photosensitive chip. The manufacture of the focus camera module is usually an assembly between these components. Assembly of parts. After the assembly is completed, the lens product and the focusing mechanism are assembled to complete the assembly of the camera module. This method has the following problems: first, the assembly process is relatively repetitive and cumbersome, resulting in low production efficiency of the camera module; second, there is an assembly tolerance between the lens and the focusing mechanism, plus the lens and the focusing mechanism itself Assembly tolerances make the tolerance chain too long and affect the quality of the module; third, the size of the module produced in this way is large in the length and width direction, which is not conducive to the development of the camera module in a lighter and thinner direction; fourth, the lens During the assembling process with the focusing mechanism, it is easy to enter the dust, and there is a bad stain phenomenon. This is because the connection between the lens and the focusing mechanism is not so tight, and sometimes there are some small gaps, so that the dust will enter the lens and the focusing mechanism. It is difficult to remove the dust. If the dust inside the module is not removed for a long time, the lens, focusing mechanism and the entire module will be contaminated, which will affect the imaging quality and service life, and ultimately affect the camera module. Set of quality for the entire product.

In addition, for split-type lens modules, in the process of assembling each lens barrel to form a camera module, there are also assembly tolerances between the assembly of each lens barrel. Each lens of a traditional split-type lens is fixed together to form a split-type lens. Module, and the split lens module that has been produced can no longer be corrected. These tolerances will cause the optical quality of the lens to be unstable, which will affect the production efficiency and imaging quality of the entire camera module. Therefore, in the manufacturing process of the lens module of the camera module, how to ensure the imaging quality of the split-type lens after manufacturing has also become an urgent problem to be solved.

In summary, in the manufacturing process of the camera module, how to effectively solve the above problems is the key to improving the yield and quality of the camera module manufacturing.

An object of the present invention is to provide a split lens integrated with a focusing mechanism, an assembling method thereof, and a camera module, so as to solve the problem that the tolerance chain of the split lens module in the prior art is too long, the production efficiency is low, the manufacturing cost is high, Large module size and poor imaging quality.

An object of the present invention is to provide a split lens integrating a focusing mechanism, an assembling method thereof, and a camera module, which eliminates the defects existing in the assembly steps of the lens module of the conventional camera module, and integrates lens assembly and calibration into the camera. In the entire assembly process of the module, the imaging quality of the camera module is improved.

An object of the present invention is to provide a split lens integrated with a focusing mechanism, a method for assembling the same, and a camera module, wherein the camera module is adjusted and calibrated before packaging, thereby reducing the processing of the split lens and the entire camera module. The process improves production efficiency and reduces manufacturing costs.

An object of the present invention is to provide a split lens integrated with a focusing mechanism, an assembly method thereof, and a camera module, which include at least one lens to be adjusted, and each lens to be adjusted includes at least one optical lens and at least one lens barrel component, The assembly position of each lens to be adjusted is adjustable, and the assembly position is calibrated, thereby improving the optical quality of the overall lens formed by it.

An object of the present invention is to provide a split lens integrating a focusing mechanism, an assembling method thereof, and a camera module. The assembly position of the lens barrel component is calibrated to compensate for tolerances in the previous process and reduce the camera module. The assembly tolerance requirements of other components improve production efficiency and reduce assembly costs.

An object of the present invention is to provide a split lens integrating a focusing mechanism, an assembling method thereof, and a camera module. Each lens to be adjusted can be adjusted in multiple orientations, and the adjustment is more convenient, which is beneficial to ensure the accuracy of assembly and imaging quality.

An object of the present invention is to provide a split lens integrated with a focusing mechanism, an assembling method thereof, and a camera module. By mounting an optical lens in a bearing structure to form a fixed lens, the bearing structure replaces traditional focusing. The carrier of the mechanism and the lens barrel of the lens make the size of the lens and the module smaller, which is conducive to the development of the camera module in a lighter and thinner direction.

An object of the present invention is to provide a split lens integrating a focusing mechanism, an assembling method thereof, and a camera module. Since the carrier of the focusing mechanism and the lens barrel of the lens are taken as a whole, the space between the lens barrel and the carrier of the focusing mechanism is reduced. The assembly process of the camera module further simplifies the overall assembly process of the camera module, making the assembly tolerance chain shorter, which is beneficial to improving production efficiency, product yield and imaging quality.

An object of the present invention is to provide a split lens integrated with a focusing mechanism, an assembling method thereof, and a camera module. The carrier of the focusing mechanism is designed into a structural shape of a lens barrel, and is directly used to carry optical lenses to drive the lens to move and adjust the lens. The focal effect is better.

An object of the present invention is to provide a split-type lens integrating a focusing mechanism, an assembling method thereof, and a camera module. The assembly between the lens barrel and the focusing mechanism carrier is omitted, and dust in the traditional assembly method can be prevented from entering the two. This phenomenon helps to ensure the imaging quality of the camera module.

An object of the present invention is to provide a split lens integrated with a focusing mechanism, an assembling method and a camera module thereof, which are assembled using a jig. The assembling method is simple, the operation is convenient, the assembling accuracy is high, and the method is suitable for popularization and application.

To meet the above objectives of the present invention and other objectives and advantages of the present invention, the present invention provides a split lens module, including:

A focusing mechanism; and a lens assembly, the lens assembly includes at least two optical lenses, at least one lens barrel component, and a bearing structure, each of the lens barrel components respectively carries at least one piece of the optical lens to form at least one to be adjusted A lens, the carrying structure carries at least one piece of the optical lens to form a fixed lens, the lens to be adjusted is pre-assembled on the fixed lens, and its assembly position relative to the fixed lens is suitable for being adjusted, wherein The fixed lens is installed inside the focusing mechanism through the bearing structure, and moves with the energization of the focusing mechanism, and is further suitable for focusing.

According to an embodiment of the present invention, the lens barrel component is pre-assembled on the top of the load-bearing structural member with glue to achieve pre-assembly of the lens to be adjusted and the fixed lens.

According to an embodiment of the present invention, the glue for pre-assembly is a mixed glue of UV glue and thermosetting glue. After UV exposure, the glue will be semi-cured to achieve pre-assembly. After baking treatment, the glue It will be completely cured to fix the whole split lens module.

According to an embodiment of the present invention, the assembly position of the lens to be adjusted is suitable for being adjusted in at least one direction.

According to an embodiment of the present invention, the focusing mechanism is suitable for selecting a voice coil motor, a piezoelectric ceramic motor, or a liquid crystal motor.

According to an embodiment of the present invention, the bearing structure is installed inside the focusing mechanism and moves along the focusing mechanism.

According to an embodiment of the present invention, a top end surface of the bearing structure is higher than a top end surface of the focusing mechanism.

According to an embodiment of the present invention, one piece of the optical lens is fixed to the inner space of the lens barrel member, and three pieces of the optical lens are fixed to the inside of the bearing structure along the height direction of the bearing structure. space.

According to another aspect of the present invention, the present invention further provides a camera module, including:

A photosensitive device, the photosensitive device includes a photosensitive chip; and a split-type lens module, the split-type lens module is disposed on a photosensitive path of the photosensitive chip, wherein the split-type lens module includes a A focusing mechanism and a lens assembly, the lens assembly includes at least two optical lenses, at least one lens barrel component, and a bearing structure, each of the lens barrel components respectively carries at least one piece of the optical lens to form at least one lens to be adjusted, The carrying structure carries at least one piece of the optical lens to form a fixed lens, and the lens to be adjusted is pre-assembled on the fixed lens, and its assembly position relative to the photosensitive wafer is suitable for being adjusted, wherein the fixed lens The supporting structure is installed inside the focusing mechanism, and moves with the energization of the focusing mechanism, and is further suitable for focusing.

According to an embodiment of the present invention, the assembly position of the lens to be adjusted is adapted to be adjusted in at least one direction, and after adjustment, the center axis of the split lens module coincides with the center axis of the photosensitive wafer or The deviation is within the allowable range.

According to an embodiment of the present invention, the photosensitive device further includes a filter, a lens holder, and a circuit board, wherein the filter is connected to an inner wall of the lens holder and located above the photosensitive wafer. The photosensitive wafer is mounted on the circuit board, and the circuit board is installed on the bottom of the lens holder, so that the photosensitive wafer is located inside the lens holder and is held with the inner wall of the lens holder One pitch.

According to an embodiment of the present invention, the photosensitive device further includes a filter, a lens holder, and a circuit board, wherein the filter and the photosensitive wafer are both installed inside the lens holder and connected to the lens holder. The inner wall of the lens holder, wherein the filter is disposed above the photosensitive wafer, and the circuit board is installed at the bottom of the lens holder.

According to another aspect of the present invention, the present invention also provides a method for assembling a split-type lens module. The method includes the following steps:

(A) assembling at least one optical lens in an inner space of a lens barrel component to form a lens to be adjusted;

(B) assembling at least one optical lens in an internal space of a load-bearing structural member to form a fixed lens, wherein the load-bearing structural member is disposed inside a focusing mechanism and moves as the focusing mechanism is energized; and

(C) Pre-assembling the lens to be adjusted and the fixed lens to form the split lens module in which the lens to be adjusted is adjustable.

According to an embodiment of the present invention, in the step (A), the lens barrel member is fixed upside down in a groove provided in a jig, and each of the optical lenses is moved along the lens barrel. The height direction of the component is fixed to the internal space of the lens barrel component.

According to an embodiment of the present invention, in the step (B), the supporting structure and the focusing mechanism are respectively placed on the bottom of the lens barrel member and a second The abutting portion is further configured to fix each of the optical lenses along the height direction of the supporting structure to the internal space of the supporting structure.

According to an embodiment of the present invention, in the step (C), before the lens to be adjusted and the fixed lens are pre-assembled, glue is applied to the bottom of the lens barrel member or on the bearing structure. The top is glued, and pre-assembly is achieved by glue between the bearing structure and the lens barrel component, wherein the assembly position of the lens to be adjusted is suitable for being adjusted in at least one direction.

According to an embodiment of the present invention, in the above method, the lens barrel component and the supporting structure are carried by a first abutting portion of the jig, and are carried by the second abutting portion. The focusing mechanism, wherein the groove formed by the first bearing portion and the second bearing portion is adapted to receive a portion of the bearing structure higher than the focusing mechanism and the lens barrel member, The depth of the groove is equal to the sum of the height of the lens barrel component and the height of the part of the bearing structure that is higher than the focusing mechanism.

According to an embodiment of the present invention, in the step (B), the supporting structure and the focusing mechanism are respectively fixed upside down on a first supporting portion and a second supporting portion of a jig. Then, each of the optical lenses is installed in the inner space of the supporting structure along the height direction of the supporting structure, and is fixed.

According to an embodiment of the present invention, in the step (C), the fixed lens is removed from the jig, and the assembled to-be-adjusted lens is pre-assembled on top of the fixed lens, wherein The assembly position of the lens to be adjusted relative to the spatial position of the fixed lens is adapted to be adjusted in at least one direction.

According to an embodiment of the present invention, in the step (C), glue is applied to the top of the fixed lens or the bottom of the lens to be adjusted, so that the lens to be adjusted and the fixed lens are realized by glue. Pre-assembled.

According to an embodiment of the present invention, in the above method, the shapes and sizes of the first bearing portion and the second bearing portion are similar to the shapes and sizes of the load bearing structure and the lens barrel member, respectively. Matching, wherein the groove formed by the first bearing portion and the second bearing portion is adapted to receive a portion of the bearing structure higher than the focusing mechanism, and the depth of the groove is equal to the depth of the groove. The height difference between the bearing structure and the focusing mechanism.

According to an embodiment of the present invention, in the above method, the load-bearing structural member and the focusing mechanism are fixed by at least two air passages provided by the fixture, wherein each of the air passages communicates with the fixture. At the top and bottom, the air passages are respectively provided at the first abutment portion and the second abutment portion, and are further suitable for fixing the load-bearing structural member and Said focusing mechanism.

According to an embodiment of the present invention, in the above method, the directions of the six axes of X, Y, Z, U, V, and W of the assembly position of the lens to be adjusted are all suitable for being adjusted. According to an embodiment of the present invention, in the step (B), the load-bearing structural member is installed inside the focusing mechanism as a carrier of the focusing mechanism, and moves along with the energization of the focusing mechanism. The focusing mechanism moves.

According to an embodiment of the present invention, in the step (B), the focusing mechanism is connected with the supporting structure in advance as a whole or the supporting structure is pre-assembled inside the focusing mechanism, and further The connection between the two is performed in step (C).

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.

In a conventional adjustable focus camera module, the lens module usually includes a lens and a focusing mechanism, wherein the lens includes an optical lens and a lens barrel carrying the lens, and the focusing mechanism includes a carrier, which is connected to other parts of the focusing mechanism And the carrier is a moving part carrier, which has threads inside, and is matched with the lens through threads or other means, that is, the carrier is connected with the lens barrel, so that the lens can be fixed on the carrier and moved with the carrier, thereby achieving the purpose of focusing. .

In addition, once each lens component in a conventional split optical lens is packaged, its assembly position cannot be adjusted, and its imaging quality cannot be adjusted during the lens or camera module assembly process.

In the present invention, by improving the carriers of each lens barrel and the focusing mechanism, the lens barrel of the fixed lens and the carrier of the focusing mechanism are designed as a whole to reduce assembly processes, reduce manufacturing costs, improve imaging quality, and at least One lens is pre-assembled, and its assembly position is adjusted in subsequent processes to produce an adjustable split lens, so that the imaging quality of the camera module during the assembly process can be adjusted in a timely and targeted manner, which improves the resolution. Manufacturing yield of stereo lenses and camera modules.

Referring to FIG. 1, a split lens module provided by the present invention will be explained. As shown in FIG. 1, a split lens module 10 includes a lens assembly 11 and a focusing mechanism 12, wherein the lens assembly 11 includes at least two optical lenses 111, at least one lens barrel member 112, and a bearing structure 113. Each of the optical lenses 111 is installed in the bearing structure 113 and the lens barrel member 112 to form a fixed lens 1 including the bearing structure 113 and at least the lens barrel member 112. A lens 2 to be adjusted, the lens 2 to be adjusted is pre-assembled to the fixed lens 1, and an assembly position of the lens 2 to be adjusted is suitable for being adjusted relative to an assembly position of the fixed lens 1, thereby adjusting the lens The optical center of the split lens module includes the fixed lens 1 installed inside the focusing mechanism 12, and the bearing structure 113 serves as a carrier of the focusing mechanism 12. As the focusing mechanism 12 is energized, Movement to focus.

This preferred embodiment uses one of the fixed lens 1 and one of the lens 2 to be adjusted as an example for explanation. The fixed lens 1 carries at least one piece of the optical lens 111, and the to-be-adjusted lens 2 carries at least one piece. The optical lens 111. As can be seen from FIG. 1, in the preferred embodiment, the fixed lens 1 includes three pieces of the optical lens 111, wherein the three pieces of the optical lens 111 are sequentially disposed along the height direction of the supporting structure 113. The internal space of the supporting structural member 113 is fixed, and the optical lens 111 and the supporting structural member 113 can be assembled and fixed by means of dispensing or welding or other implementable methods. This preferred embodiment The optical lens 111 is fixed in the supporting structure 113 by using a thermosetting adhesive.

Further, the supporting structure 113 is not only used as a lens barrel component of the fixed lens 1 to carry the optical lenses 111, but also is used as a carrier of the focusing mechanism 12 and installed inside the focusing mechanism 12. Is connected to other parts of the focusing mechanism 12, and when the focusing mechanism 12 is energized, the bearing structure 113 will move along with the energization of the focusing mechanism 12 and follow the focusing mechanism 12 Motion in the height direction or other directions, which is suitable for focusing.

The to-be-adjusted lens 2 includes a piece of the optical lens 111, and the optical lens 111 is fixed to an inner space of the lens barrel member 112. The optical lens 111 may be dispensed or welded or other implementable methods. The lens 111 is assembled and fixed with the load-bearing structural member 113. In the preferred embodiment, the optical lens 111 is fixed in the lens barrel member 112 by using a thermosetting adhesive.

The lens 2 to be adjusted is pre-assembled on the top of the fixed lens 1 through glue 3, that is, the lens barrel member 112 is connected to the bearing structure 113 through the glue 3, thereby realizing the lens 2 to be adjusted Assembly with the fixed lens 1, wherein the assembly position of the to-be-adjusted lens 2 is suitable for being adjusted in at least one direction, and the adjustable direction is suitable to be selected as a horizontal direction, a vertical direction, an inclined direction and a circumferential direction One or more of them.

It is worth mentioning that the glue 3 used for pre-assembly of the lens 2 to be adjusted is suitable for selection as a thermosetting glue or a mixed glue of UV glue and thermosetting glue. The glue 3 of the preferred embodiment uses one The mixed glue of UV glue and thermosetting glue, wherein the glue 3 will be semi-cured to achieve pre-assembly after ultraviolet exposure. When the lens 2 to be adjusted needs to be fixed after the adjustment, it is then baked. The glue 3 is completely cured to fix the entire split lens module 10.

It is more worth mentioning that this preferred embodiment is merely an example, and those skilled in the art can think of pre-assembly of a plurality of the lenses 2 to be adjusted to form a plurality of adjustable lenses to be adjusted, and You can also fix multiple lenses and reserve one or more of them as the lenses to be adjusted to adjust the optical center of the lens in subsequent processes.

Referring to FIG. 2, FIG. 3, FIG. 8, and FIG. 9, an assembly method of the split lens module 10 and a jig 20 used in the assembly process of the present invention will be described. The shape and size of the split lens module 10 are matched to assist in assembling the split lens module 10.

As shown in FIG. 8, the jig 20 includes a first bearing portion 21 and a second bearing portion 22, and has at least two air passages 23, wherein the second bearing portion 22 is provided in the first bearing portion 22. An abutment portion 21 has a periphery, and a top end surface of the second abutment portion 22 is higher than a bottom end surface of the first abutment portion 21, and a groove is formed therebetween, wherein the groove is located in the At the first supporting portion 21, since the top end surface of the carrying structure 113 is higher than the top end surface of the focusing mechanism 12 in the split lens module 10, the The groove between the first abutting portion 21 and the second abutting portion 22 is capable of accommodating the portion of the bearing structure 113 and the lens barrel member 112 that is higher than the focusing mechanism 12, in other words, the The shape and size of the first bearing portion 21 and the supporting structure 13 and the lens barrel member 112 are matched, and the shape and size of the second bearing portion 22 and the focusing mechanism 12 are matched. When assembling the split lens module 10, the focusing mechanism 12 is placed upside down on the second bearing portion 22, and the bearing structure 113 is placed upside down on the A bearing portion 21, during the assembly process, the first bearing portion 21 and the second bearing portion 22 are used to carry the bearing structure 113, the lens barrel member 112, and the focusing mechanism, respectively. 12.

Further, the air channel 23 communicates with the top and the bottom of the jig 20, so that the external environment at the top of the jig 20 and the external environment at the bottom thereof communicate with each other through the air channel 23, at least one of which The air passage 23 is provided on the first bearing portion 21, and at least one of the air passage 23 is provided on the second bearing portion 22, so that a suction nozzle or other vacuum equipment can be placed on the fixture 20. An external force is applied to the load bearing structure 113 and the focusing mechanism 12 through the air passage 23 at the bottom to fix the load bearing structure 113 or / and the lens barrel member 112 and the focus mechanism 12 respectively. The first bearing portion 21 and the second bearing portion 22 are convenient for assembly in subsequent processes.

In this preferred embodiment, four air passages 23 are provided at the first bearing portion 21 and the second bearing portion 22 uniformly and at intervals to fix the bearing structure in all directions. 13 and the focusing mechanism 12 to make it fixed more firmly.

As shown in FIGS. 2, 3 and 9, a method 900 for assembling the split lens module 10 includes the following steps:

Step (901): Invert the focusing mechanism 12 and the supporting structure 113 on the jig 20;

Step (902): adjust the jig 20 to fix the focusing mechanism 12 and the supporting structure 113 on the jig 20;

Step (903): sequentially assemble each of the optical lenses 111 in the internal space of the load-bearing structural member 113 and fix them to form the fixed lens 1;

Step (904): remove the fixed lens 1 from the jig 20;

Step (905): pre-assemble the lens 2 to be adjusted on top of the fixed lens 1; and

Step (906): Complete the assembly of the split lens module 10.

In the step (901), since the load bearing structure 113 is designed to have the dual functions of a lens barrel and a focusing mechanism carrier at the time of design, the focus mechanism 12 and the load bearing structure 113 can be assembled in one of the following three ways: (a) the focusing mechanism 12 can be connected to the supporting structure 113 in advance, so that the supporting structure 113 has the function of the carrier of the focusing mechanism 12, The person as a whole is inverted on the jig 20 together, so that it further has the kinetic energy of the lens barrel; (b) the focusing mechanism 12 and the bearing structure 113 are inverted on the jig 20 that matches. After ascending, perform assembly of the two; (c) after assembling each of the optical lenses 111 inside the carrying structure 113 so that the carrying structure 113 has the function of a lens barrel, and then After the lens 111 is assembled as a whole, the bearing structure 113 and the focusing mechanism 12 are assembled, so that the lens 111 further functions as a carrier of the focusing mechanism 12.

In the step (902), by adjusting the jig 20 to cooperate with a suction nozzle or a vacuum device, at the bottom of the jig 20, the nozzle or the vacuum device faces the air channel 23 The pressure is applied to fix the focusing mechanism 12 and the supporting structure 113 through the air passage 23 to fix the focusing mechanism 12 and the supporting structure 113 to the jig, respectively. The second abutting portion 22 and the first abutting portion 21 of 20 prevent slippage, jitter, and offset during subsequent assembly processes, reduce assembly deviations, and ensure assembly accuracy.

Further, the depth of the groove formed between the first bearing portion 21 and the second bearing portion 22 is equal to the height difference between the bearing structure 113 and the focusing mechanism 12, and further A portion of the supporting structure 113 higher than the focusing mechanism 12 can be received.

It is worth mentioning that if the bearing structure 113 and the focusing mechanism 12 are connected together before being inverted, the first bearing portion 21 does not need to be provided with the air passage 23, and only needs to The focusing mechanism 12 may be fixed.

In the step (903), each of the optical lenses 111 is placed, for example, three pieces of the optical lenses 111 in this preferred embodiment. In this preferred embodiment, a single piece of the optical lenses is placed in a single shot. The method of 11 is to place three pieces of the optical lens 111 one after the other. After placement, it is suitable to directly fix them by thermosetting glue. You can choose to fix each optical lens, or you can fix it after putting all of them. , Choose according to the actual situation. Those skilled in the art can understand that the assembling method of each of the optical lenses 111 can be selected according to the structure of the inner wall of the supporting structural member 113, for example, three pieces of the optical lenses 111 can also be fitted in advance After being assembled together, it is installed in the internal space of the supporting structure 113 as a whole.

It is worth mentioning that each of the optical lenses 111 may also be pre-assembled in the lens barrel member 112 and adjusted in subsequent processes.

In the step (904), first, the suction nozzle or other vacuum equipment is removed, and then the fixed lens 1 is removed from the jig 20 to complete the assembly of the fixed lens 1, and the fixed lens 1 is taken out The fixed lens 1 may be ejected through an air jet through the air passage 23, and the fixed lens 1 may be ejected, and the fixed lens 1 may be taken out. Alternatively, the fixed lens 1 may be taken out according to actual conditions.

In the step (905), before the lens 2 to be adjusted is preassembled to the fixed lens 1, the lens 2 to be adjusted is assembled, and a piece of the optical lens 111 is fixed to the lens barrel. The internal space of the component 112 completes the assembly of the lens 2 to be adjusted, wherein the jig 20 can be used to assist the assembly of the lens 2 to be adjusted, and the lens barrel member 112 of the lens 2 to be adjusted passes through The air passage 23 is fixed to the first bearing portion 21, and the optical lens 111 is further installed in the lens barrel member 112 and fixed.

After the lens 2 to be adjusted is assembled, the lens 2 to be adjusted is mounted on the top of the fixed lens 1 with the glue 3, that is, the glue 3 is applied to the bottom of the lens 2 to be adjusted or coated. On the top of the fixed lens 1, that is, the glue 3 is applied to the bottom of the lens barrel member 112 or the top of the bearing structure 113, so that the lens barrel member 112 and the bearing structure 113 pass through. The glue 3 is connected, and the lens barrel member 112 can be adjusted to adjust the lens 2 to be adjusted.

In step (906), the to-be-adjusted lens 2 is pre-assembled in the split lens module 10, and its assembly position can be adjusted. When the split lens module 10 is assembled to a camera module After the group, the lens 2 to be adjusted is adjusted so that the imaging of the camera module meets the resolution requirements, and then the lens 2 to be adjusted is completely fixed.

Referring to FIG. 4, FIG. 5, and FIG. 10, a second method of assembling the split lens module 10 provided by the present invention will be described. A fixture 20A is matched with the split lens module 10 to assist The assembly of the split lens module 10, wherein the jig 20A includes a first bearing portion 21A and a second bearing portion 22A, and has at least two air passages 23A, wherein the second bearing portion 22A is provided on the periphery of the first bearing portion 21A, at least one of the air passages 23A is provided on the first bearing portion 21A, and at least one of the air passages 23A is provided on the second bearing portion 22A.

Further, the shape and size of the first abutment portion 21A are matched with the shape and size of the lens barrel member 112 and the bearing structure 113 after being superimposed, and the second abutment portion 22A and the size The shape and size of the focusing mechanism 12 are matched to facilitate its assembly, wherein the top end surface of the first bearing portion 21A is lower than the bottom end surface of the second bearing portion 22A, and a groove is formed therebetween. At the same time, the top end surface of the carrying structure member 13 is higher than the top end surface of the focusing mechanism 12, and the lens barrel member 112 is superposed on the top of the carrying structure member 113. Therefore, in this preferred embodiment, The depth of the groove is equal to the sum of the height difference between the bearing structure 113 and the focusing mechanism 12 and the height of the lens barrel member 112, so that the lens barrel member 112 and the bearing structure can be received. The part 113 is higher than the part of the focusing mechanism 12 and is convenient for fixing and assembly.

The second assembly method 1000 of the split lens module 10 includes the following steps:

Step (1001): Invert the lens barrel member 112 on the jig 20A and fix it;

Step (1002): assemble a piece of the optical lens 111 in the lens barrel member 112 and fix it to form the lens 2 to be adjusted;

Step (1003): apply glue to the lens barrel member 112, invert the load-bearing structural member 113 on the lens barrel member 112 to perform pre-assembly therebetween, and invert the focusing mechanism 12 on the lens. With 20A;

Step (1004): adjust the jig 20A, and fix the focusing mechanism 12 and the bearing structure 113 on the jig 20A;

Step (1005): sequentially assemble each of the optical lenses 111 to the inner space of the load-bearing structural member 113 and fix them to form the fixed lens 1; and

Step (1006): Remove the split lens module 10 from the jig 20A to complete the assembly of the split lens module 10.

In the step (1001), the lens barrel member 112 is inverted on the first bearing portion 21A of the jig 20A, so that the lens barrel member 112 is located in the groove of the jig 20A. , And a suction nozzle or other vacuum equipment is placed on the bottom of the jig 20A, and the lens barrel member 112 is fixed by the air passage 23A provided in the first bearing portion 21A to prevent the In the process of assembling the lens, deviations, tilts and other phenomena occur to ensure the accuracy of the assembly.

In the step (1002), a piece of the optical lens 111 is installed in the inner space of the lens barrel member 112 and fixed by means of glue or welding. In the embodiment, a thermosetting glue is used to fix the optical lens. Lens 111.

In addition, those skilled in the art may also fix a plurality of the optical lenses 111 to the lens barrel member 112, and the number of lenses and the number of lens barrel members are merely examples, and do not limit the present invention.

In the step (1003), glue is applied to the bottom of the lens barrel member 112, or glue may be applied to the top of the load-bearing structural member 113, and then the two are superimposed together to achieve For assembly, for example, the coated glue 3 may be a thermosetting glue or a mixed glue of a thermosetting glue and a UV glue, and then the supporting structure 113 is placed on the bottom of the lens barrel member 112, and the mirror The barrel member 112 and the bearing structure 113 are pre-assembled by the glue 3, wherein the assembly position of the lens barrel member 112 is suitable for being adjusted, and the bearing structure 113 is higher than the part of the focusing mechanism 12. It is located in the groove of the jig 20A, and at the same time, the focusing mechanism 12 is placed on the second supporting portion 22A.

It is worth mentioning that, in the step (1003), since the bearing structure 113 has been designed to have the dual functions of the lens barrel and the focusing mechanism carrier at the time of design, the focusing mechanism 12 The bearing structure 113 can be assembled in one of the following three ways: (a) The focusing mechanism 12 can be connected to the bearing structure 113 in advance so that the bearing structure 113 has the focusing mechanism 12 The function of the carrier is that the two as a whole are placed on the jig 20 together, so that it further has the kinetic energy of the lens barrel; (b) the focusing mechanism 12 and the bearing structure 113 are inverted to match After assembling the jig 20, the two are assembled; (c) after assembling each of the optical lenses 111 inside the carrying structure 113, so that the carrying structure 113 has the function of a lens barrel After assembling each of the optical lenses 111 as a whole, the bearing structure 113 and the focusing mechanism 12 are assembled, so that it further has the function of a carrier of the focusing mechanism 12.

In the step (1004), by adjusting the jig 20A to cooperate with a suction nozzle or a vacuum device, at the bottom of the jig 20A, the nozzle or the vacuum device is opposed to the air channel 23A. The pressure is applied to fix the focusing mechanism 12 through the air passage 23A to fix the focusing mechanism 12 to the second bearing portion 22A of the jig 20A, and the load bearing structure The piece 113 is stably located in the groove by the glue between the lens barrel member 112 and the slide 113, which prevents slippage, jitter, and offset during subsequent assembly, and reduces assembly deviations to ensure assembly accuracy. .

In the step (1005), each of the optical lenses 111 is placed, for example, three pieces of the optical lenses 111 in this preferred embodiment. In the preferred embodiment, a single piece of the optical lenses is placed in a single shot. The method of 11 is to place three pieces of the optical lens 111 one after the other. After placement, it is suitable to directly fix them by thermosetting glue. You can choose to fix each optical lens, or you can fix it after putting all of them. , Choose according to the actual situation. Those skilled in the art can understand that the assembling method of each of the optical lenses 111 can be selected according to the structure of the inner wall of the supporting structural member 113, for example, three pieces of the optical lenses 111 can also be fitted in advance After being assembled together, it is installed in the internal space of the supporting structure 113 as a whole.

In the step (1006), first, the suction nozzle or other vacuum equipment is removed, and then the split lens module 10 is removed from the jig 20A to complete the assembly of the split lens module 10, wherein The split lens module 10 can be taken out by air jet through the air passage 23A, an opposite force is applied to the split lens module 10, and the split lens module 10 is ejected, so as to be removed. The split lens module 10 may be taken out in other ways according to the actual situation.

Wherein, the to-be-adjusted lens 2 is pre-assembled in the split lens module 10, and its assembly position can be adjusted. When the split lens module 10 is assembled into a camera module, the The lens 2 to be adjusted is adjusted so that the imaging of the camera module meets the resolution requirements, and then the lens 2 to be adjusted is completely fixed.

In addition, in this preferred embodiment, the lens barrel member 112 and the supporting structure 113 may be pre-assembled, and then each of the optical lenses 111 is sequentially installed on the lens barrel member 112 and In the carrying structure, the pre-assembly of the split lens module 10 is completed after fixing, that is, the assembly of the optical lens 111 in the above step (1002) is changed to the other three pieces in the step (1005). The optical lenses 111 are assembled together.

Referring to FIG. 6, a camera module including the split lens module 10 of the above preferred embodiment will be explained. As shown in FIG. 6, a camera module includes the split lens module 10 and a photosensitive device 30A. The photosensitive device 30A includes a filter 31A, a lens holder 32A, a photosensitive wafer 33A, and a Circuit board 34A, the photosensitive device is manufactured using a COB (chip on board) process, wherein the filter 31A is mounted on the upper portion of the lens holder 32A and connected to the lens holder 32A, and is located on the photosensitive member Above the wafer 33A, the photosensitive wafer 33A is mounted above the circuit board 34A, maintaining a distance from the inner wall of the lens holder 32A, and the circuit board 34A is installed at the bottom of the lens holder 32A, and The photosensitive wafer 33A is installed in a cavity inside the lens holder 32A. The split lens module 10 is mounted on the top of the photosensitive device 30A and is located on the photosensitive path of the photosensitive chip 33A. When light reflected by an object passes through the split lens module 10 and enters the camera module Inside the group, it is received by the photosensitive wafer 33A and subjected to photoelectric conversion, so that the camera module can obtain images related to the object in the subsequent steps.

Further, the focusing mechanism 12 and the supporting structure 113 are fixedly assembled on the top of the lens holder 32A, and are connected to the lens holder 32A, so that each of the optical lenses 111 is located on the photosensitive The photosensitive path of the wafer 33 facilitates subsequent imaging, making the camera module more stable and reliable.

It is worth mentioning that after the split lens module 10 is assembled with the photosensitive device 30A, the pre-assembly of the camera module is completed, the pre-assembled camera module is powered on, and the camera module is collected. Group imaging, according to the imaging method of the camera module, using software to calculate the adjustment method and adjustment amount of the lens 2 to be adjusted, and adjusting the assembly position of the lens 2 to be adjusted according to the adjustment amount, so that the split lens The center axis of the module 10 coincides with the center axis of the photosensitive wafer 33A or is within a tolerance range, so that the imaging of the camera module meets the resolution requirements, and then the lens 2 to be adjusted is completely fixed, so that The lens barrel member 112 and the supporting structure 113 are fixed together, that is, the lens 2 to be adjusted and the fixed lens 1 are fixed together to complete the assembly of the camera module.

Preferably, the pre-assembly of the lens 2 to be adjusted and the glue 3 of the fixed lens 1 is pre-assembled in a semi-cured state, which can both semi-fix the lens 2 to be adjusted to prevent displacement, and After adjustment, the lens 3 to be adjusted is fixed by completely curing the glue 3 to complete the assembly of the camera module.

Wherein, the assembly positions of the to-be-adjusted lens 2 relative to the six axes of X, Y, Z, U, V, and W of the camera module are all suitable for being adjusted.

Referring to FIG. 7, an implementation manner of a camera module including the split lens module 10 according to the foregoing preferred embodiment will be described. As shown in FIG. 7, a camera module includes the split lens module 10 and a photosensitive device 30B. The photosensitive device 30B includes a filter 31B, a lens holder 32B, a photosensitive wafer 33B, and a The circuit board 34B, and the photosensitive device 30B is manufactured by a flip chip process, wherein the filter 31B is mounted on an upper portion of the lens holder 32B and connected to the lens holder 32B. The wafer 33B is installed below the filter 31B and maintained at a distance, wherein the photosensitive wafer 33B is directly connected to the lens holder 32B, and a predetermined distance is maintained with the circuit board 34B installed at the bottom of the lens holder 32B. Pitch, the lens holder 32B has an electrical function, and corresponding electrical components are implanted in the lens holder 32B to ensure the imaging of the camera module. At the same time, the thickness of the photosensitive device 30B is thinner and the size is more compact. The camera module has a small size.

The split lens module 10 is mounted on the top of the photosensitive device 30B and is located on the photosensitive path of the photosensitive wafer 33B. When light reflected by an object passes through the split lens module 10 and enters the camera module Inside the group, it is received by the photosensitive wafer 33B and subjected to photoelectric conversion, so that the camera module can obtain an image related to the object in the subsequent.

Further, the focusing mechanism 12 and the supporting structure 113 are fixedly assembled on the top of the lens holder 32B, and are connected to the lens holder 32B, so that each of the optical lenses 111 is located on the photosensitive The photosensitive path of the wafer 33B is convenient for subsequent imaging, which makes the camera module work more stably and reliably.

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.

1‧‧‧ fixed lens

10‧‧‧ Split Lens Module

11‧‧‧ lens assembly

111‧‧‧optical lens

112‧‧‧ lens barrel parts

113‧‧‧bearing structure

12‧‧‧ Focusing mechanism

2‧‧‧ lens to be adjusted

20, 20A‧‧‧ jig

21, 21A‧‧‧The first supporting department

22, 22A‧‧‧Second bearing section

23, 23A‧‧‧Air channel

3‧‧‧glue

30A, 30B‧‧‧Photosensitive device

31A, 31B‧‧‧ Filter

32A, 32B‧‧‧Mirror mount

33A, 33B

34A, 34B‧‧‧Circuit board

900, 1000‧‧‧ Assembly method

901 ～ 906‧‧‧step

1001 ～ 1006‧‧‧‧step

FIG. 1 is a schematic cross-sectional view of a split-type lens module according to a preferred embodiment of the present invention. 2 and 3 are schematic diagrams of a first method of assembling a split lens module according to the above-mentioned preferred embodiment of the present invention. 4 and 5 are schematic diagrams of a second method for assembling a split lens module according to the above-mentioned preferred embodiment of the present invention. FIG. 6 is a schematic cross-sectional view of a camera module including a split lens module according to the above preferred embodiment of the present invention. FIG. 7 is a modified implementation of a camera module including a split lens module according to the above-mentioned preferred embodiment of the present invention. FIG. 8 is a schematic structural diagram of a jig used in an assembly process of a split lens module according to the above preferred embodiment of the present invention. FIG. 9 is a flowchart of an assembly method of a split lens module according to the above-mentioned preferred embodiment of the present invention. FIG. 10 is a flowchart of another method for assembling a split lens module according to the above preferred embodiment of the present invention.

Claims (25)

A split-type lens module, comprising: a focusing mechanism; and a lens assembly, the lens assembly includes at least two optical lenses, at least one lens barrel component, and a bearing structure, each of the lens barrel components Carrying at least one piece of the optical lens respectively to form at least one lens to be adjusted, the carrying structure member carrying at least one piece of the optical lens to form a fixed lens, the to-be-adjusted lens is preassembled on the fixed lens, and is opposite to the fixed lens The assembly position of the fixed lens is adapted to be adjusted, wherein the fixed lens is installed inside the focusing mechanism through the bearing structure, and moves with the energization of the focusing mechanism, thereby being suitable for focusing. The split-type lens module according to item 1 of the scope of patent application, wherein the lens barrel component is pre-assembled on the top of the load-bearing structural member by glue to realize pre-assembly of the lens to be adjusted and the fixed lens. The split lens module according to item 2 of the scope of the patent application, wherein the glue for pre-assembly is a mixed glue of UV glue and thermosetting glue, and the glue will be semi-cured to achieve pre-assembly after UV exposure. After the baking process, the glue will be completely cured to fix the entire split lens module. The split lens module according to item 1 of the patent application scope, wherein the assembly position of the lens to be adjusted is suitable for being adjusted in at least one direction. The split lens module according to item 2 of the scope of patent application, wherein the assembly position of the lens to be adjusted is suitable for being adjusted in at least one direction. The split lens module according to any one of claims 1 to 5, wherein the focusing mechanism is suitable for selecting a voice coil motor, a piezoelectric ceramic motor, or a liquid crystal motor. The split lens module according to any one of claims 1 to 5, wherein the bearing structure is installed inside the focusing mechanism and moves along the focusing mechanism. The split-type lens module according to item 6 of the patent application scope, wherein the bearing structure is installed inside the focusing mechanism and moves along the focusing mechanism. The split lens module according to item 7 of the scope of patent application, wherein a top end surface of the load-bearing structural member is higher than a top end surface of the focusing mechanism. The split lens module according to item 7 of the scope of the patent application, wherein one piece of the optical lens is fixed to the inner space of the lens barrel component, and three pieces of the optical lens are mounted along the height direction of the bearing structure. Fixed to the inner space of the load-bearing structural member. A method for assembling a split lens module, characterized in that the method includes the following steps: (A) assembling at least one optical lens in an inner space of a lens barrel component to form a lens to be adjusted; (B) at least An optical lens is assembled in an inner space of a bearing structure to form a fixed lens, wherein the bearing structure is disposed inside a focusing mechanism and moves with the energization of the focusing mechanism; and (C) the The to-be-adjusted lens and the fixed lens are pre-assembled to form the split lens module in which the to-be-adjusted lens is adjustable. The method according to item 11 of the scope of patent application, wherein in the step (A), the lens barrel component is fixed upside down in a groove provided in a jig, and each of the optical lenses is along The height direction of the lens barrel member is installed in the internal space of the lens barrel member and fixed. The method according to item 11 of the scope of patent application, wherein in the step (B), the supporting structure and the focusing mechanism are respectively fixed upside down on a first supporting portion and A second bearing portion, and each of the optical lenses is installed in the inner space of the bearing structure along the height direction of the bearing structure, and is fixed. The method according to item 12 of the scope of patent application, wherein in the step (B), the bearing structure and the focusing mechanism are respectively placed upside down on the bottom of the lens barrel component and the jig. A second bearing portion is provided, and each of the optical lenses is installed in the inner space of the bearing structure along the height direction of the bearing structure and is fixed. The method according to item 13 of the scope of patent application, wherein in the step (C), the fixed lens is removed from the jig, and the assembled to-be-adjusted lens is pre-assembled to the fixed The top of the lens, wherein the assembly position of the lens to be adjusted relative to the spatial position of the fixed lens is adapted to be adjusted in at least one direction. The method according to item 14 of the scope of patent application, wherein in the step (C), before the lens to be adjusted and the fixed lens are preassembled, glue is applied to the bottom of the lens barrel member or The top of the load-bearing structural member is glued, and pre-assembly is achieved by glue between the load-bearing structural member and the lens barrel member, wherein the assembly position of the lens to be adjusted is suitable for being adjusted in at least one direction. The method according to item 15 of the scope of patent application, wherein in the step (C), by applying glue on the top of the fixed lens or the bottom of the lens to be adjusted, the lens to be adjusted and the lens The fixed lens is pre-assembled with glue. The method according to item 16 of the scope of patent application, wherein in the above method, the lens barrel component and the load-bearing structural component are carried by a first bearing portion of the jig, and by the first Two bearing portions carry the focusing mechanism, wherein the groove formed by the first bearing portion and the second bearing portion is adapted to receive a portion and a portion of the bearing structure higher than the focusing mechanism. In the lens barrel component, a depth of the groove is equal to a sum of a height of the lens barrel component and a height of a portion of the bearing structure higher than the focusing mechanism. The method according to item 17 of the scope of patent application, wherein in the above method, the shape and size of the first abutment portion and the second abutment portion are different from those of the load-bearing structural member and the lens barrel member, respectively. The shape and the size match, wherein the groove formed by the first bearing portion and the second bearing portion is suitable for accommodating a portion of the bearing structure higher than the focusing mechanism, and the groove The depth of is equal to the height difference between the bearing structure and the focusing mechanism. The method according to item 18 or 19 of the scope of application for a patent, wherein in the above method, the bearing structure and the focusing mechanism are fixed by at least two air passages, wherein each of the air passages is Communicating with the top and the bottom of the jig, the air channels are respectively provided on the first bearing portion and the second bearing portion, and are further suitable for using a suction nozzle or a vacuum device to pass through the air channel The carrying structure and the focusing mechanism are fixed. The method according to item 20 of the patent application scope, wherein in the above method, the pre-assembly glue is a mixed glue of UV glue and thermosetting glue, and the glue will be semi-cured to achieve pre-assembly after UV exposure. After the baking process, the glue will be completely cured to fix the entire split lens module. The method according to any one of claims 11 to 19, wherein in the above method, the directions of the six axes of X, Y, Z, U, V, and W of the assembly position of the lens to be adjusted are suitable for being Adjustment. The method according to any one of claims 11 to 19, wherein in the step (B), the bearing structure is installed inside the focusing mechanism as a carrier of the focusing mechanism. The focus mechanism is energized to move along the focus mechanism. The method according to item 21 of the scope of patent application, wherein in the step (B), the bearing structure is installed inside the focusing mechanism as a carrier of the focusing mechanism, and along with the focusing mechanism Is energized to move along the focusing mechanism. The method according to item 23 of the scope of patent application, wherein in the step (B), the focusing mechanism is connected with the supporting structure in advance as a whole or the supporting structure is pre-assembled in the focusing mechanism Internally, the connection between the two is performed in the step (C).