TWI418871B - Lens module and fabrication method thereof - Google Patents

Description

Lens module and manufacturing method thereof

The present invention relates to a module, and more particularly to a lens module.

With the trend of miniaturization and low price of electronic products, the emergence of Wafer Level Module (WLM) technology has attracted much attention. The technology of wafer-level modules is mainly to make electronic products use wafer-level manufacturing technology, and to miniaturize and reduce the cost of electronic products. Among them, the technology of the wafer level module can also be applied to the lens module, so that the lens module can be reduced in size compared with the conventional lens module, and can be applied to electronic devices (such as notebook computers). , mobile phone, etc.) on the camera module.

1 is a partial cross-sectional view of a conventional lens module using wafer level module technology. Referring to FIG. 1 , the lens module 100 includes a first lens layer 110 , a second lens layer 120 , and a gap layer 130 . The first lens layer 110 has a plurality of first lenses 112 and a light transmissive substrate 114 , wherein the first lens 112 is located on the transparent substrate 114 . The second lens layer 120 has a plurality of second lenses 122 and a transparent substrate 124, wherein the second lens is located on the transparent substrate 124. The gap layer 130 is disposed between the first lens layer 110 and the second lens layer 120, as shown in FIG.

In the lens module 100, the gap layer 130 is usually made of a light-transmitting material such as glass or plastic. However, when optical imaging is performed, stray light is used. The gap layer 130 is easily penetrated and cannot be effectively isolated. Therefore, the proportion of the noise of the lens module 100 during imaging is too large, and the image quality cannot be effectively improved.

In addition, in the process of manufacturing the lens module 100, it is generally necessary to perform the adhesion process twice, so that the gap layer 130 can be bonded to the first lens layer 110 and the second lens layer 120, respectively, and the lens module 100 is assembled. However, the manufacturing method using the foregoing structure is likely to cause high difficulty in alignment, and the reliability of manufacturing the lens module 100 is lowered.

In view of this, the present invention provides a lens module which can effectively reduce stray light and has better imaging quality.

The invention further provides a method for manufacturing a lens module, which can manufacture the above lens module.

The invention provides a lens module having a collecting region and a non-collecting region. The lens module includes a first lens layer, a second lens layer and a light shielding gap layer. The first lens layer has a first light transmissive substrate and an optical element. The optical component is disposed on the first transparent substrate and has at least one first lens and a connecting portion connecting the first lens. The first lens is located in the light collecting region, and the connecting portion is located in the non-light collecting region. The second lens layer has a second transparent substrate and at least one second lens opposite the first lens. The second lens is disposed on the second transparent substrate and located in the light collecting region, and the optical component is located between the first transparent substrate and the second transparent substrate. The light shielding gap layer is disposed between the first lens layer and the second lens layer for the first lens layer and the second lens layer A gap is maintained between the mirror layers. The light shielding gap layer has a supporting portion and a covering portion, wherein the supporting portion connects the connecting portion and the second transparent substrate, and the covering portion covers the periphery of the first lens.

In an embodiment of the invention, the support portion has a first thickness and the cover portion has a second thickness, wherein the first thickness is greater than the second thickness.

In an embodiment of the invention, the surface of the connecting portion is a concave-convex surface. In an embodiment of the invention, the surface of the light-shielding gap layer connected to the connecting portion conforms to the uneven surface. In an embodiment of the invention, the material of the light-shielding gap layer is black colloid.

In an embodiment of the present invention, the second transparent substrate has a first surface and a second surface opposite to the first surface, and when the number of the at least one second lens is plural, the second lenses are respectively disposed on The first surface and the second surface correspond to each other.

In an embodiment of the invention, the lens module further includes at least one third lens, wherein the third lens is disposed on the first transparent substrate relative to the first lens, and the first transparent substrate is located on the first lens and the first lens Between the three lenses.

In an embodiment of the invention, the lens module further includes an adhesive layer, wherein the adhesive layer is located between the support portion and the second transparent substrate.

In an embodiment of the invention, the first light transmissive substrate and the optical element are integrally formed or formed separately. In an embodiment of the invention, the second transparent substrate and the at least one second lens are integrally formed or formed separately.

In an embodiment of the invention, the first lens and the second lens are each a concave lens or a convex lens.

The present invention further provides a method of fabricating the above lens module. The manufacturing method includes the following steps. First, the first lens layer described above is provided. Connect The light-shielding gap layer is formed on the first lens layer. Then, the second lens layer described above is provided and the second lens layer is overlaid on the light-shielding gap layer to combine the first lens layer and the second lens layer.

In an embodiment of the invention, the method of forming the light-shielding gap layer comprises the following steps. First, a mold process is used on the optical component. Then, a light-shielding gap material is injected into the mold process to form a support portion and a cover portion connecting the optical elements. Next, the light-shielding gap material is cured to form a light-shielding gap layer.

In an embodiment of the invention, the manufacturing method further includes forming a concave-convex structure on the surface of the connecting portion. In an embodiment of the invention, when a light-shielding gap layer is formed on the first lens layer, the surface of the light-shielding gap layer and the connecting portion is conformed to the uneven structure.

In an embodiment of the invention, the first transparent substrate and the optical element are formed in a form of integral molding or molding.

In an embodiment of the invention, the second transparent substrate and the at least one second lens are formed by integral molding or molding.

In an embodiment of the present invention, at least one third lens is formed on the first transparent substrate while the first lens layer is provided, wherein the third lens is opposite to the first lens, and the first transparent substrate is located Between the first lens and the third lens. In an embodiment of the invention, the third lens and the first lens are fabricated simultaneously.

Based on the above, the lens module of the present invention mainly adopts a material that is not easy to transmit light through the light-shielding gap layer, and can reduce the incidence of stray light, thereby improving the imaging quality of the lens module. Wherein, the light-shielding gap layer has a support portion and a cover portion, and the support portion can isolate most of the stray light from entering the lens The utility model has the advantages of supporting the first lens layer and the second lens layer, and the covering portion can further block the transmission of stray light into the lens, and has the advantages of improving the imaging quality of the lens module.

Further, since the surface of the connecting portion can be an uneven surface, the adhesion between the light-shielding gap layer and the first lens layer can be improved. Furthermore, if the light-shielding gap layer is made of a colloidal material which is not easy to transmit light, the light-shielding gap layer is formed on the optical element, and the light-shielding gap layer can be directly adhered to the first lens layer without using an additional adhesive. Fixed on the first lens layer. In other words, the lens module of the present embodiment has a relatively simple process step and has better process reliability than the prior art.

The above described features and advantages of the present invention will be more apparent from the following description.

2 is a cross-sectional view of a lens module in accordance with an embodiment of the present invention. Referring to FIG. 2, the lens module 200 of the embodiment has a light collecting area P1 and a non-light collecting area P2. The lens module 200 includes a first lens layer 210, a second lens layer 220, and a light shielding gap layer 230. The first lens layer 210 has a first transparent substrate 212 and an optical element 214. The optical component 214 is disposed on the first transparent substrate 212 and has at least a first lens 214a and a connecting portion 214b connected to the first lens 214a. The first lens 214a is located in the light collecting area P1, and the connecting portion 214b is located in the non-lighting area P1. In the light collection area P2. In this embodiment, the first lens 214a and the connecting portion 214b may be integrally formed, that is, the stamping process or other suitable semiconductor process may be utilized. The manner of forming the first lens 214a and the connecting portion 214b at the same time.

In the optical element 214, the first lens 214a is located between the first lens layer 210 and the second lens layer 220, and the first lens 214a may be a convex lens as shown in FIG. 2, wherein the convex surface of the convex lens is oriented The direction of the second lens layer 220. However, in other embodiments not shown, the first lens 214a may also be a design using a concave lens depending on the needs and design of the user. In this embodiment, the surface S105 of the connecting portion 214b may be a concave-convex surface as shown in FIG. 2, but in other embodiments not shown, the surface S105 may also be a flat surface. It can be determined by the needs and design of the user.

In addition, the first transparent substrate 212 and the optical element 214 may be integrally formed, that is, the molding may be completed by using, for example, a mold or other special mold. Alternatively, the first transparent substrate 212 and the optical element 214 may be formed separately, for example, the optical element 214 described above may be formed on the first transparent substrate 212. In this embodiment, the optical element 214 is formed on the first transparent substrate 212 in a manner of molding each, but is not limited thereto. In this embodiment, when the optical element 214 is formed on the first transparent substrate 212 by means of the respective molding, since the optical element 214 has the connecting portion 214b connecting the first lens 214a, the optical element 214 is in the first light transmission. The contact area on the substrate 212 can be increased, and the optical element 214 can be more stably positioned on the first transparent substrate 212.

In this embodiment, the lens module 200 further includes at least one third lens 226, wherein the third lens 226 is disposed on the first transparent substrate 212 opposite to the first lens 214a, and the first transparent substrate 212 is located at the first Lens 214a Between the third lens 226 and FIG. In this embodiment, the third lens 226 may be a convex lens as shown in FIG. 2 , wherein the convex surface of the convex lens is a direction facing away from the first transparent substrate 212 . However, in other embodiments not shown, the third lens 226 can also be designed with a concave lens depending on the needs and design of the user.

The second lens layer 220 has a second transparent substrate 222 and at least one second lens 224 opposite to the first lens 214a. The second lens 224 is disposed on the second transparent substrate 222 and located in the light collecting region P1, and the optical element 214 is located between the first transparent substrate 212 and the second transparent substrate 222, as shown in FIG. 2 . In this embodiment, the second transparent substrate 222 has a first surface 222a and a second surface 222b opposite to the first surface, and the number of the second lenses 224 shown in FIG. 2 is plural, and these second The lenses 224 are respectively disposed on the first surface 222a and the second surface 222b and correspond to each other. In this embodiment, the second lens 224 is designed as a convex lens as shown in FIG. 2 , and the convex surface thereof is in a direction away from the second transparent substrate 222 . In another embodiment, the second lens 224 It may also be a design using a concave lens. This embodiment is merely illustrative of a convex lens, but is not limited thereto.

In another embodiment, the second lens 224 may be disposed only on the first surface 222a or the second surface 222b, and the number may be one or more, depending on the user. Depending on the specifications required for the lens module 200, in other words, the number and arrangement positions of the first lens 214a, the second lens 224, and the third lens 226 are used to exemplify the concept of the present invention, but are not limited thereto.

In addition, the second transparent substrate 222 and the second lens 224 may be integrally formed, that is, integrally formed by using a mold or other special mold. Production. Alternatively, the second transparent substrate 222 and the second lens 224 may be formed separately. For example, the second lens 224 of FIG. 2 may be formed on the second transparent substrate 222. In this embodiment, the second lens 224 is formed on the second transparent substrate 222 in a manner of molding each, but is not limited thereto.

The light-shielding gap layer 230 is disposed between the first lens layer 210 and the second lens layer 220 to maintain a gap S101 between the first lens layer 210 and the second lens layer 220, as shown in FIG. 2 . The light-shielding gap layer 230 has a supporting portion 232 and a covering portion 234. The supporting portion 232 connects the connecting portion 214b and the second transparent substrate 222, and the covering portion 234 covers the periphery S103 of the first lens 214a. In detail, the gap S101 of the first lens layer 210 and the second lens layer 220 is mainly used to match the focal length of the first lens 214a, the second lens 224, and the third lens 226. The lenses 214a, 224 can be prevented from colliding with each other or colliding with the transparent substrates 212, 222. In other words, the thickness of the light-shielding gap layer 230 depends on the required focal length of the first lens 214a, the second lens 224, and the third lens 226, and the design requirements of the user.

In the present embodiment, the support portion 232 has a first thickness H1, and the cover portion 234 has a second thickness H2, wherein the first thickness H1 is greater than the second thickness H2, as shown in FIG. In detail, the support portion 232 and its thickness H1 are mainly used to maintain the gap S101 between the first lens layer 210 and the second lens layer 220, and cover the portion of the connection portion 214b and the periphery S103 of the first lens 214a. 234 may increase the contact area with the optical element 214 to improve the stability of the light-shielding gap layer 230 on the first lens layer 210.

In this embodiment, the material of the light-shielding gap layer 230 is not used. The light-transmissive material is, for example, a black gel, so that most of the stray light can be blocked by the support portion 232, that is, the noise of the image light can be reduced, thereby improving the imaging of the lens module 200 itself. Signal-to-noise ratio (SNR). In addition, the covering portion 214b and the covering portion 234 of the periphery S103 of the first lens 214a can further reduce the chance of stray light entering between the lenses, so that the imaging quality of the lens module 200 can be improved.

Further, when the surface S105 of the connecting portion 214b is a concave-convex surface, the surface on which the light-shielding gap layer 230 and the connecting portion 214b are disposed is conformed to the uneven surface, as shown in FIG. Through the structure of the uneven surface, when the light-shielding gap layer 230 is formed on the optical element 214, the adhesion between the light-shielding gap layer 230 and the connecting portion 214b can be improved, and the contact area between the light-shielding gap layer 230 and the connecting portion 214b can be increased. Further, the stability of the light-shielding gap layer 230 on the first lens layer 210 is improved.

In this embodiment, the lens module 200 further includes an adhesive layer 240, wherein the adhesive layer 240 is located between the support portion 232 and the second transparent substrate 222, as shown in FIG. In detail, when the light-shielding gap layer 230 is made of a gel material, when the light-shielding gap layer 230 is formed on the first lens layer 210, the light-shielding gap layer 230 may be fixed to the first lens layer 210 first. At this time, in order to assemble the lens module 200 as shown in FIG. 2, an adhesive layer 240 may be used between the support portion 232 and the second transparent substrate 222 to connect the first lens layer 210 and the second lens layer 220. Formed.

It should be noted that the first lens layer 210 and the second lens layer 220 of the embodiment adopt a wafer level module (WLM) technology. The plurality of lenses 214a, 224, and 226 are formed on the light-transmissive substrate, and FIG. 2 is only a partial area of the lens module. That is, each of the light-transmissive substrates may have a plurality of lens arrays, and the lens layers 210 and 220 are formed as described above, and the light-transmissive substrates having the plurality of lens arrays are stacked and assembled, thereby forming a plurality of embodiments as in the present embodiment. The lens module 200 is described in the example. In this embodiment, the two lens layers 210 and 220 are exemplified. In other embodiments, the lens module 200 may also adopt a multi-layer (three or more layers) lens layer structure based on the concept conveyed by the embodiment. .

According to the above structure, the lens module 200 of the present embodiment mainly uses a material that is not easy to transmit light through the light-shielding gap layer 230, and can reduce the incidence of stray light, thereby improving the imaging quality of the lens module 200. The light-shielding gap layer 230 has a support portion 232 and a cover portion 232, and the support portion 232 can isolate most of the stray light from entering the lens and having the support for the first lens layer 210 and the second lens layer 220, and covering The portion can further block the transmission of stray light into the lens, and also has the advantage of improving the imaging quality of the lens module 200.

Further, in the optical element 214, since the surface S105 of the connecting portion 214b can be an uneven surface, the adhesion between the light-shielding gap layer 230 and the first lens layer 210 can be improved. In addition, if the light-shielding gap layer 230 is made of a non-transmissive gel material, the light-shielding gap layer 230 is formed on the optical element 214, and can be directly adhered to the first lens layer 210 without using an additional adhesive. The light-shielding gap layer 230 is fixed to the first lens layer 210. In other words, the lens module 200 of the present embodiment has a relatively simple process step and has better process reliability than the prior art.

Based on the above, the present invention also provides a method of fabricating the above lens module, which is explained below.

3A-3C are flowcharts showing the fabrication of a lens module according to an embodiment of the invention. Referring to FIG. 3A, first, a first lens layer 210 is provided. The description of the first lens layer 210 can be referred to the foregoing, and details are not described herein again.

Next, a light-shielding gap layer 230 is formed on the first lens layer 210, as shown in FIG. 3B. In the present embodiment, the manner in which the light-shielding gap layer 230 is formed is, for example, a mold process (not shown) on the optical element 214. Then, a light-shielding gap material (not shown) is injected into the mold process to form the support portion 232 and the cover portion 234 connecting the optical element 214. Then, the light-shielding gap material 230 can be formed as shown in FIG. 3B by curing the light-shielding gap material. In this embodiment, the light-shielding gap material may be a colloidal material that is not easy to transmit light, for example, a black gel. Thus, after the light-shielding gap layer 230 is formed on the first lens layer 210, the light-shielding gap layer 230 may be directly The first lens layer 210 is adhered to the first lens layer 210 without using an adhesive process to adhere the light-shielding gap layer 230 to the first lens layer 210.

Then, a second lens layer 220 is provided and the second lens layer 220 is covered on the light-shielding gap layer 230 to combine the first lens layer 210 and the second lens layer 220, as shown in FIG. 3C. In the present embodiment, the description of the second lens layer 220 can be referred to the foregoing, and details are not described herein again. In addition, when the second lens layer 220 is covered on the light-shielding gap layer 230, an adhesive layer (not shown) may be applied to the second lens layer 220 and the light-shielding gap layer 230, thereby The second lens layer 220 is adhered to the light-shielding gap layer 230. So far, a method of fabricating the above lens module 200 has been substantially completed.

3A to 3C, it can be seen that in the production of the lens module 200, in addition to the advantages mentioned in the lens module, the manufacturing method of the present embodiment is the same as the manufacturing method of the present embodiment. The method can omit an adhesive process, thereby improving process reliability and reducing the difficulty of alignment of the adhesive process.

4 is a schematic exploded view of a lens module according to another embodiment of the present invention. Referring to FIG. 4 , the lens module 400 of the present embodiment adopts the concept of the lens module 200 described above, but the difference is that the first lens layer 210 and the second lens layer 220 of the lens module 400 are The lenses 214a, 224 are in the form of a plurality of lens arrays A1. In addition, in order to correspond to each of the lenses 214a, 224, the shape of the light-shielding gap layer 230 is also changed.

Since the lens module 400 is a concept of the lens module 200, the lens module 400 also has the advantages mentioned in the lens module 200. For related description, reference may be made to the foregoing, and details are not described herein.

In summary, the lens module of the present invention mainly uses a material that is not easy to transmit light through the light-shielding gap layer 230, and can reduce the incidence of stray light, thereby improving the imaging quality of the lens module 200. The opaque layer 230 has a support portion 232 and a cover portion 234, and the support portion 232 can isolate most of the stray light from entering the lens and having the support for the first lens layer 210 and the second lens layer 220, and covering The portion 234 can further block the transmission of stray light into the lens, and also has the advantage of improving the imaging quality of the lens module 200.

In addition, in the optical element 214, due to the surface of the connecting portion 214b S105 may be an uneven surface, and thus the adhesion between the light-shielding gap layer 230 and the first lens layer 210 may be improved. In addition, if the light-shielding gap layer 230 is made of a non-transmissive gel material, the light-shielding gap layer 230 is formed on the optical element 214, and can be directly adhered to the first lens layer 210 without using an additional adhesive. The light-shielding gap layer 230 is fixed to the first lens layer 210. In other words, the lens module 200 of the present embodiment has a relatively simple process step and has better process reliability than the prior art.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

100, 200, 400‧‧‧ lens module

110‧‧‧ first lens layer

120‧‧‧second lens layer

130‧‧‧Gap layer

112‧‧‧First lens

114, 124‧‧‧Transparent substrate

122‧‧‧second lens

210‧‧‧First lens layer

212‧‧‧First transparent substrate

214‧‧‧Optical components

214a‧‧‧first lens

214b‧‧‧Connecting Department

220‧‧‧second lens layer

222‧‧‧Second transparent substrate

222a‧‧‧ first surface

222b‧‧‧ second surface

224‧‧‧second lens

226‧‧‧ third lens

230‧‧‧ shading gap layer

232‧‧‧Support

234‧‧‧ Coverage

240‧‧‧Adhesive layer

A1‧‧‧ lens array

H1‧‧‧first thickness

H2‧‧‧second thickness

P1‧‧‧Light collection area

P2‧‧‧ non-light collection area

S101‧‧‧ gap

Surrounding S103‧‧

S105‧‧‧ surface

1 is a partial cross-sectional view of a conventional lens module using wafer level module technology.

2 is a cross-sectional view of a lens module in accordance with an embodiment of the present invention.

3A-3C are flowcharts showing the fabrication of a lens module according to an embodiment of the invention.

4 is a schematic exploded view of a lens module according to another embodiment of the present invention.

200‧‧‧ lens module

210‧‧‧First lens layer

212‧‧‧First transparent substrate

214‧‧‧Optical components

214a‧‧‧first lens

214b‧‧‧Connecting Department

220‧‧‧second lens layer

222‧‧‧Second transparent substrate

222a‧‧‧ first surface

222b‧‧‧ second surface

224‧‧‧second lens

226‧‧‧ third lens

230‧‧‧ shading gap layer

232‧‧‧Support

234‧‧‧ Coverage

240‧‧‧Adhesive layer

H1‧‧‧first thickness

H2‧‧‧second thickness

P1‧‧‧Light collection area

P2‧‧‧ non-light collection area

S101‧‧‧ gap

Surrounding S103‧‧

S105‧‧‧ surface

Claims (19)

A lens module having a light collecting region and a non-light collecting region, comprising: a first lens layer having a first transparent substrate and an optical component, wherein the optical component is disposed in the first transparent layer The optical substrate has at least one first lens and a connecting portion connecting the first lens, wherein the first lens is located in the light collecting region, and the connecting portion is located in the non-light collecting region; a second lens layer, Having a second transparent substrate and at least one second lens opposite to the first lens, the at least one second lens is disposed on the second transparent substrate and located in the light collecting region, and the optical component is located at the first Between a transparent substrate and the second transparent substrate; and a light shielding gap layer disposed between the first lens layer and the second lens layer for the first lens layer and the second lens layer The gap layer is provided with a support portion and a cover portion, wherein the support portion connects the connection portion and the second transparent substrate, and the cover portion covers the periphery of the first lens. The lens module of claim 1, wherein the support portion has a first thickness, and the cover portion has a second thickness, the first thickness being greater than the second thickness. The lens module of claim 1, wherein the surface of the connecting portion is a concave-convex surface. The lens module of claim 3, wherein a surface of the light-shielding gap layer connected to the connecting portion conforms to the concave-convex surface. The lens module of claim 1, wherein the lens module The second transparent substrate has a first surface and a second surface opposite to the first surface, and when the number of the at least one second lens is plural, the second lenses are respectively disposed on the first surface and the first surface The two surfaces correspond to each other. The lens module of claim 1, further comprising at least one third lens disposed on the first transparent substrate opposite to the first lens, wherein the first transparent substrate is located on the first lens Between the third lenses. The lens module of claim 1, further comprising an adhesive layer between the support portion and the second transparent substrate. The lens module of claim 1, wherein the first transparent substrate and the optical element are integrally formed or formed separately. The lens module of claim 1, wherein the second transparent substrate and the at least one second lens are integrally formed or formed separately. The lens module of claim 1, wherein the light shielding gap layer is made of an opaque material. The lens module of claim 1, wherein the first lens and the second lens are respectively concave or convex lenses. A lens module manufacturing method, wherein the lens module has a light collecting region and a non-light collecting region, comprising: providing a first lens layer, wherein the first lens layer has a first transparent substrate and an optical An optical component is disposed on the first transparent substrate, the optical component has at least one first lens and a connecting portion connecting the first lens, wherein the first lens is located in the light collecting region, and the connecting The portion is located in the non-light collecting region; forming a light-shielding gap layer on the first lens layer, wherein the light shielding room The gap layer has a support portion and a cover portion, and the support portion is connected to the connection portion, and the cover portion covers the periphery of the first lens; and a second lens layer is provided and covers the second lens layer in the light shielding gap The first lens layer and the second lens layer are combined on the layer, wherein the second lens layer has a second transparent substrate and at least one second lens opposite to the first lens, the at least one second lens configuration The second transparent substrate is connected to the support portion, and the optical component is located between the first transparent substrate and the second transparent substrate. The method for fabricating a lens module according to claim 12, wherein the method for forming the light-shielding gap layer comprises: using a mold process on the optical component; injecting a light-shielding gap material into the mold process to form Connecting the support portion of the optical component to the cover portion; and curing the light-shielding gap material to form the light-shielding gap layer. The method for fabricating a lens module according to claim 12, further comprising forming a concave-convex structure on the surface of the connecting portion. The lens module of claim 14, wherein a surface of the light-shielding gap layer connected to the connecting portion conforms to the concave-convex structure when a light-shielding gap layer is formed on the first lens layer. The method for fabricating a lens module according to claim 12, wherein the first transparent substrate and the optical element are formed by integral molding or molding. The method for fabricating a lens module according to claim 12, wherein the second transparent substrate and the at least one second lens are formed The formula includes integral molding or individual molding. The method of manufacturing the lens module of claim 12, wherein when the first lens layer is provided, further comprising forming at least one third lens on the first transparent substrate, wherein the third lens is opposite The first lens is disposed between the first lens and the third lens. The method of fabricating a lens module according to claim 18, wherein the third lens and the first lens are simultaneously fabricated.