TWI412808B - Method for producing lens module - Google Patents

Abstract

This invention relates to a method for producing a lens module. The method includes the following steps: providing a top retainer matrix, at least a lens matrix and a lens holder matrix, the top retainer matrix, the lens matrix and the lens holder matrix formed as the same specification; arranging the lens matrix and the top retainer matrix in order on the lens holder matrix to form a lens module matrix; cutting the lens module matrix to form a plurality of lens modules. A single lens module is formed by cutting the lens module matrix. Therefore, assembly precision of the single lens module is enhanced.

Description

Lens module manufacturing method

The present invention relates to a method of manufacturing a lens mold.

At present, with the rapid development of multimedia technology, portable electronic devices with camera functions such as digital cameras and video cameras are becoming more and more popular among consumers. The lens of the portable electronic device is increasingly becoming lighter, thinner and smaller. . Since the optical components such as a single lens and a lens holder are of a compact type, it is difficult to align the optical centers of the individual optical components such as the lens and the lens holder in the manufacturing process of the lens module, thereby causing the lens module to be in the lens module. The combination of optical components is low in precision.

In view of the above, it is necessary to provide a method of manufacturing a lens module that can improve the combination precision of optical components in a single lens module.

A manufacturing method of a lens module, comprising the steps of: providing an array type of holding unit group, at least one array type lens group, and an array type lens holder group, the holding portion group, the lens group and the lens holder The groups are arranged in the same array format, and each of the lens holders has a stepped support portion extending downward from a side of the holder group, the support portion including a group adjacent to the holder portion. a first step and a second step away from the group of the holder, the first step Attaching a layer of infrared cut filter; using the lens holder as a bottom layer, sequentially stacking the lens group and the holding portion group to form an array lens module; and cutting the array lens module into a single lens module group.

Compared with the prior art, the manufacturing method of the lens module is completed by assembling the holding portion group, the lens group and the lens holder group to complete the assembly of the array lens module, and mass production by cutting. A single lens module. Due to the alignment of the array lens module, the combination precision of the holding portion, the lens and the lens holder in the single lens module is effectively improved.

100‧‧‧Array lens module

20‧‧‧keeping department

30‧‧‧First lens group

40‧‧‧second lens group

50‧‧‧Mirror base

60‧‧‧ spacer component group

21‧‧‧ aperture

22‧‧‧V slot

31‧‧‧Optical Department

32‧‧‧First Non-Optical Department

42‧‧‧Second non-optical department

70‧‧‧ film

61‧‧‧ box

12‧‧‧ cutting lane

11‧‧‧ Column cutting

80‧‧‧Infrared cut filter

200‧‧‧Single lens module

51‧‧‧Support

52‧‧‧Lighting Department

511‧‧‧ second ladder

510‧‧‧ first step

1 is an exploded perspective view of an array lens module in a method of manufacturing a lens module according to an embodiment of the present invention.

2 is a cross-sectional, exploded view of the array lens module of FIG. 1 taken along II-II.

3 is a cross-sectional, exploded view of the single lens module of the lens module of FIG. 1 manufactured by the method of the present invention.

4 is a flow chart of a method of manufacturing the lens module of FIG. 3.

The following preferred embodiments will be described in detail below with reference to the accompanying drawings.

Please refer to FIG. 1 , which is an array lens module 100 in a method for manufacturing a lens module according to the present invention. The array lens module 100 includes an array of holding portions 20 and two An array of first lens set 30 and second lens set 40, an array of lens mount sets 50 and an array of spacer element sets 60.

The spacer element group 60 is configured to space the first lens group 30 and the second lens group 40 to make the first lens group 30 and the second lens group 40 easier to fix. The holding portion group 20, the first lens group 30, the second lens group 40, the lens holder group 50 and the spacer element group 60 are all arranged in the same array type. In the embodiment, the aliquot is equal. 3 × 3 array distribution. It can be understood that the holding portion group 20, the first lens group 30, the second lens group 40, the lens holder group 50, and the spacer element group 60 can also be distributed in an n×m array, and the n and the m Both are positive integers.

The holding unit group 20, the first lens group 30, the second lens group 40, the lens holder group 50 and the spacer element group 60 are respectively fabricated by using corresponding array molds (not shown) and plastic. Injection molding. The molds corresponding to the holding portion group 20 are designed to be spaced apart from each other by means of V-grooves, so that the V-grooves 22 are present on the holding portion group 20 in the assembled array lens module 100 (see FIG. 2). . The bottom of the V-groove 22 is relatively thin relative to the rest of the array lens module 100, and the bottom of the V-groove 22 is a dicing street to facilitate cutting.

The holding portion group 20 is provided with a 3×3 array-type aperture 21, so that light can pass through the aperture 21. The first lens group 30 and the second lens group 40 are provided with a 3×3 array-distributed optical portion 31, and the first lens group 30 further includes a 3×3 array-distributed first non-optical portion 32. The second lens set 40 also includes a 3 x 3 array of second non-optical portions 42. The first non-optical portion 32 and the second non-optical portion 42 are both substrates of the lens for contacting the outside to fix the lens. The spacer element group 60 is provided with a frame 33 of a 3×3 array arrangement, so that light passing through the aperture 21 can pass through the frame 61. Over.

Referring to FIG. 1 and FIG. 2 , the lens holder 50 is matched with the second non-optical portion 42 of the second lens group 40 adjacent to one side of the holding portion group 20 , and the lens holder group 50 is away from the holding portion. The other side of the group 20 extends downwardly with a stepped support portion 51 having a 3 x 3 array pattern and a 3 x 3 array distributed light passing portion 52. Light passing through the aperture 21 can pass through the light passing portion 52. The support portion 51 includes a first step 510 adjacent to the holder portion 20 and a second step 511 away from the holder portion 20.

The holding portion group 20 is adjacent to one side of the lens holder group 50, the first non-optical portion 32 is opposite to the two sides of the lens holder group 50, and the second non-optical portion 42 is opposite to the two sides of the lens holder group 50. The spacer element group 60 is coated with glue on both sides of the lens holder group 50 and on the side of the lens holder group 50 adjacent to the holder group 20. Thus, with the lens holder 50 as the bottom layer, the second lens group 40, the spacer element group 60, the first lens group 30 and the holding portion group 20 are sequentially laminated by gluing, thereby assembling the array. The lens module 100.

It can be understood that when the array lens group provided by the array lens module is single, it is not necessary to provide an array of spacer elements; when the array lens module provides an array of n lens groups, the array type The spacer element group can provide at most n-1.

Please refer to FIG. 3 , which is a single lens module 200 manufactured by the method of manufacturing the lens module of the present invention. Referring to FIG. 1 to FIG. 4 together, the manufacturing method of the lens module of the present invention comprises the following steps:

First, in step S10, the array type holding unit group 20, the array type first lens group 30, the array type second lens group 40, the array type lens holder group 50, and the array type spacer element are provided. Group 60.

Next, in step S20, the second lens group 40, the spacer element group 60, the first lens group 30 and the holding portion group 20 are sequentially laminated with the lens holder group 50 as a bottom layer, and assembled into the above array lens module. Group 100.

Finally, in step S30, the array lens module 100 is cut into a single lens module 200.

Wherein, in order to protect the optical portion 31 of the first lens group 30 and the second lens group 40 from scratches caused by cutting, the holding portion group 20 is away from the lens holder group 50. The side is covered with a film 70, and a layer of infrared cut filter 80 is attached to each of the first steps 510 of the lens holder 50. In the present embodiment, the film 70 is a UV film. In addition, in the embodiment, the array lens module 100 adopts two column cuttings and two row cuttings to form a single lens module 200, and the single lens module 200 can be placed in the lens barrel (not shown). . Column cutting refers to cutting along one side of the array lens module 100 as a column cutting lane 11 and cutting with the single lens module 200 as an interval, and cutting is performed perpendicular to the column cutting lane 11 as a row cutting lane. 12 and cutting with the single lens module 200 as an interval. It can be understood that the arrangement of the array lens module 100 by using the column cutting and the row cutting can be arbitrary.

A method for manufacturing a lens module according to an embodiment of the present invention, by adhering the holding portion group 20, the first lens group 30, the spacer element group 60, the second lens group 40, and the lens holder group 50 The assembly of the array lens module 100 is completed by lamination, and the single lens module 200 is mass-produced by cutting. Since the alignment of the array type holding portion group 20, the first lens group 30, the spacer element group 60, the second lens group 40, and the lens holder group 50 is adopted, the holding portion in the single lens module 200 is effectively improved, and the first Lens, spacing The combination accuracy of the component, the second lens and the lens holder.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application.

100‧‧‧Array lens module

20‧‧‧keeping department

30‧‧‧First lens group

40‧‧‧second lens group

50‧‧‧Mirror base

60‧‧‧ spacer component group

21‧‧‧ aperture

31‧‧‧Optical Department

32‧‧‧First Non-Optical Department

42‧‧‧Second non-optical department

61‧‧‧ box

70‧‧‧ film

11‧‧‧ Column cutting

12‧‧‧ cutting lane

Claims (7)

A method of manufacturing a lens module, the improvement comprising the steps of: providing an array of holding portion groups, at least one array type lens group, and an array type lens holder group, the holding portion group, the lens group and the The lens holder group is arranged in the same array type, and each of the lens holder groups has a stepped support portion extending downward from a side of the holder group, the support portion including a holding portion close to the holding portion a first step of the group and a second step away from the group of the holding portion, the first step is attached with an infrared cut filter; and the lens set is a bottom layer, and the lens group and the holding portion are sequentially laminated The group is assembled into an array lens module; the array lens module is cut into a single lens module. The method of manufacturing a lens module according to claim 1, wherein the lens group comprises a first lens group and a second lens group, and the lens module manufacturing method further provides an array of spacer elements. The grouping unit is configured to form an array lens module by sequentially stacking the second lens group, the spacer element group, the first lens group and the holding portion group with the lens holder group as a bottom layer. The method of manufacturing a lens module according to claim 1, wherein the lens holder group, the lens group and the holding portion are sequentially laminated by gluing. The lens module manufacturing method according to claim 3, wherein the lens group includes a non-optical portion, the holding portion group is adjacent to one side of the lens holder group, and the non-optical portion is opposite to the lens holder group Both sides and the lens holder group are glued to one side of the holding portion. The method for manufacturing a lens module according to claim 1, wherein the array A V-groove is disposed between the individual holding portions of the column lens module, and the bottom of the V-groove is a cutting path. The method of manufacturing a lens module according to claim 1, wherein the holding portion is covered with a film away from a side of the lens holder. The method for manufacturing a lens module according to the first aspect of the invention, wherein the cutting step is to cut the array lens module by means of a column cutting and a row cutting.