TWI454775B - Assembling apparatus for lens module and assembling method for the same - Google Patents

Description

Lens module assembly jig and method for assembling lens module

The invention relates to a lens module assembly technology, in particular to a lens module assembly fixture and a method for assembling the lens module.

In recent years, with the development of multimedia technology, the application range of lens modules has become more and more extensive, such as in electronic products such as digital cameras, video cameras, and mobile phones with camera functions. At the same time, people are pursuing miniaturization of digital cameras, camcorders, and mobile phones with camera functions. At the same time, the image quality of the objects they shoot is also higher, that is, the image of the object is desired to be clear, and the image quality of the object is largely It depends on whether the optical axes of the lenses in the lens module are aligned during assembly. Alpheus et al., "Zoom lens calibration for wind tunnel measurements", presented at the 1995 SPIE System, Videometrics IV, revealed that the optical axes of the lenses in the lens module are not aligned. And the impact. Therefore, the assembly of the lens must be quite accurate to increase the probability of alignment of the optical axis, thereby improving the imaging quality of the lens module.

The lens module usually includes a Barrel, a Holder, a lens, a spacer ring, and a filter, wherein the lens is sequentially fixed in the lens barrel along the central axis of the lens barrel. During the assembly of the lens module, the components such as the lens and the spacer ring are sucked into the lens barrel, and then the components are assembled in the lens barrel by the jig.

In the prior art, components such as a lens and a spacer ring are usually assembled by a pressure bar. In the position inside the lens barrel. The pressure bar is a columnar structure having a groove at one end. However, the pressure bar is only assembled for the lens. When assembling the spacer ring or the filter, it is necessary to replace the pressure bar corresponding to the spacer ring or the filter, which is not only difficult to improve the utilization or saving of the lens module assembly jig. The lens module assembly fixture material and processing cost, and greatly reduce the efficiency of lens module assembly.

In view of the above, it is necessary to provide a lens module assembly jig and a method of assembling the lens module that can reduce the manufacturing cost and improve the assembly efficiency of the lens module.

A lens module assembly jig for assembling a first optical element and a second optical element into a lens barrel. The lens module assembly jig includes a first assembly and a second assembly. The first assembly has a receiving hole for receiving the second assembly. One end of the first assembly has a first mating structure and the other end has a first assembly surface. The first assembly surface is for contacting the first optical element to group the first optical element into the lens barrel. One end of the second assembly has a second mating structure and the other end has a second assembly surface. The second mating structure corresponds to the first mating structure for detachably mounting the second assembly to the first assembly. The second assembly surface is for contacting the second optical component with the first assembly surface to assemble the second optical component into the lens barrel.

A lens module assembling method using the lens module assembly jig as above, comprising the steps of: providing a first optical component, a second optical component, and a lens barrel; contacting the first assembly surface of the first assembly with the first optical component Applying pressure to the first assembly to assemble the first optical component into the lens barrel; Passing through the receiving hole of the first assembly, and engaging the second assembly with the first mating structure to fix the second assembly to the first assembly; and the second assembly surface together with the first assembly surface and the second optical The components are in contact, and the second assembly is pressed to assemble the second optical component into the lens barrel.

Compared with the prior art, the lens module assembly jig includes a first assembly member and a second assembly member detachably coupled to the first assembly member, which can reduce the manufacturing cost of the lens module assembly jig and improve the lens module. The utilization rate of the assembly jig. By using the lens module to assemble the jig to assemble optical components of different sizes, it is not necessary to replace the jig, and the second assembly is simply attached to or detached from the first assembly to improve lens assembly efficiency.

The technical solution will be further described in detail below with reference to the accompanying drawings and embodiments.

Referring to FIG. 1 and FIG. 2 together, a first embodiment of the present technical solution provides a lens module assembly jig 10 for assembling a first optical component and a second optical component into a lens barrel, which includes a first assembly. The piece 12 is detachably coupled to the second assembly 14 of the first assembly 12.

The first assembly 12 includes a first mating portion 121, a receiving portion 122 and a first assembly portion 123 that are sequentially connected. The first mating portion 121 is a cylinder having a first mating structure 124 for mating with the second assembly 14 away from one end of the first assembly portion 123. The first mating structure 124 can be at least two protrusions or grooves. In this embodiment, the first mating structure 124 is four protrusions, and the first mating portion is equiangularly distributed around the axis of the first mating portion 121. 121 outer surface. The receiving portion 122 is a cylinder having a diameter larger than the diameter of the first engaging portion 121 for connecting the first engaging portion 121 and the first assembling portion 123. The first assembly portion 123 is a cylinder for assembling the first optical element and has a first assembly surface 125 remote from the first mating portion 121. The first assembly surface 125 has a diameter that is slightly smaller than the inner diameter of the lens barrel for contacting the first optical element to assemble the first optical element into the lens barrel. The first assembly 12 has a receiving hole 126 for receiving the second assembly 14 . The receiving hole 126 extends through the first engaging portion 121 , the receiving portion 122 , and the first assembling portion 123 .

The second assembly 14 is partially received in the receiving hole 126 and includes a pressing member 141 and a pressing rod 142. The pressing member 141 is disposed at one end of the pressing rod 142. The pressing member 141 is adapted to cooperate with the first engaging portion 121, which is a cylindrical structure having an inner diameter slightly larger than the diameter of the first fitting portion 121, including the connected bottom wall 143 and the annular side wall 144. The pressing member 141 has a second mating structure 145 corresponding to the first mating structure 124 . The second mating structure 145 is a recess formed in the sidewall 144 of the pressing member 141 . In this embodiment, the second mating structure 145 is four recesses, and each of the recesses has an angle of extension with the axis of the second assembly member 14, and the angle may be 0-60°. The second mating structure 145 is engaged with the first mating structure 124 such that the second assembly 14 can be easily removed or bonded to the first assembly 12. The diameter of the pressing rod 142 is smaller than the diameter of the receiving hole 126, so that the pressing rod 142 can be received in the receiving hole 126. The other end of the abutment bar 142 has a second assembly face 146 for contacting the second optical component with the first assembly face 125 to assemble the second optical component into the lens barrel.

Please refer to FIG. 3 to FIG. 5 together, which is assembled using the lens module as above. The method of assembling the lens module by the jig 10 includes the following steps: First, the lens barrel 200, the first lens 210, the spacer 300 and the second lens 310 are provided.

The lens barrel 200 has a diaphragm hole 201. The first lens 210 includes a first optical portion 211 for optical imaging and a first fixing portion 212 that surrounds the first optical portion 211. The spacer 300 is a toroidal structure having interconnected inner sidewalls 301 and a first surface 302. The second lens 310 includes a second optical portion 311 for optical imaging and a second fixed portion 312 that surrounds the second optical portion 311.

In the second step, referring to FIG. 3 , the first lens 210 is placed in the lens barrel 200 , and the first optical portion 211 protrudes from the fixing hole 212 in a direction away from the aperture hole 201 . The outer wall of the first assembly portion 123 is opposed to the inner wall of the lens barrel 200, and the first assembly surface 125 of the first assembly portion 123 is in contact with the first fixing portion 212 of the first lens 210, and the first optical portion 211 is accommodated. Placed in the receiving hole 126, at this time, the first assembly 12 can be pressed to assemble the first lens 210 into a suitable position in the lens barrel 200.

In the third step, the second assembly 14 is passed through the receiving hole 126 of the first assembly 12, and the second assembly 14 is fixed to the first assembly by the cooperation of the first mating structure 124 and the second mating structure 145. 12.

In the fourth step, referring to FIG. 3 and FIG. 4, the spacer 300 is placed in the lens barrel 200, and the first surface 302 is away from the aperture hole 201, so that the first assembly surface 125 of the first assembly portion 123 is the same. A surface 302 is in contact with the second assembly surface 146 in contact with the inner sidewall 301. Pressing the second assembly 14 to assemble the spacer 300 into the appropriate position in the lens barrel 200, and with the first lens 210 close contact with the card.

In the fifth step, referring to FIG. 3 to FIG. 5 , the second lens 310 is placed in the lens barrel 200 such that the second optical portion 311 protrudes from the second fixing portion 312 in a direction close to the aperture hole 201 . The first assembly surface 125 of the first assembly portion 123 is brought into contact with the second fixing portion 312 of the second lens 310, and the second assembly surface 146 is in contact with the second optical portion 311 to press the second assembly member 14 to The second lens 310 is assembled into a proper position in the lens barrel 200 and is in close contact with the spacer 300.

It can be understood that the lens module assembly jig 10 assembly can also be used to assemble a light shielding film or other optical component similar to the structure of the spacer 300.

Referring to FIG. 6 , the lens module assembly jig 20 provided by the second embodiment of the present invention is basically the same as the lens module assembly jig 10 of the first embodiment, and the difference is that the lens module assembly jig 20 is the same. An assembly 22 and a second assembly 24 are connected by a screw. The first mating structure 224 is externally threaded on the first mating portion 221, and the second mating structure 245 is internally threaded on the pressing member 241. The first mating structure 224 is screwed with the second mating structure 245 to make the first The second assembly 24 is detachably coupled to the first assembly 22.

The lens module assembly jig includes a first assembly member and a second assembly member detachably coupled to the first assembly member, which can reduce the manufacturing cost of the lens module assembly jig and improve the assembly of the lens module assembly jig. Utilization rate. By using the lens module to assemble the jig to assemble optical components of different sizes, it is not necessary to replace the jig, and the second assembly is simply attached to or detached from the first assembly to improve lens assembly efficiency.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

Lens module assembly fixture ‧ ‧ 10, 20

First assembly ‧‧‧12,22

First coordination department ‧‧‧121, 221

Containment Department ‧‧122

First Assembly Department ‧‧‧123

First coordination structure ‧‧‧124,224

First assembly surface ‧‧‧125

Containing holes ‧ ‧ 126

Second assembly ‧‧14,24

Compressed parts ‧ ‧ 141, 241

Resisting rod ‧ ‧ 142

Bottom wall ‧ ‧ 143

Side wall ‧‧‧144

Second coordination structure ‧‧‧145,245

Second assembly surface ‧‧‧146

Mirror ‧‧200

Aperture hole ‧‧201

First lens ‧ ‧ 210

First Optical Department ‧‧‧211

Fixed Department ‧‧212

Spacer ‧‧300

Inner wall ‧ ‧ 301

First surface ‧‧‧302

Second lens ‧ ‧ 310

Second Optics Department ‧‧ 311

Second fixed section ‧‧ 312

FIG. 1 is an exploded perspective view of a lens module assembly jig provided by a first embodiment of the present technical solution.

2 is a cross-sectional view of a lens module assembly jig provided by the first embodiment of the present technical solution.

3 is a schematic view showing the assembly of a first lens using the first assembly of the lens module assembly jig provided by the first embodiment of the present technical solution.

4 is a schematic view showing a first assembly assembly spacer of the lens module assembly jig provided by the first embodiment of the present technical solution.

FIG. 5 is a schematic diagram of assembling a second lens of the lens module assembly jig provided by the first embodiment of the present technical solution.

6 is a cross-sectional view of a lens module assembly jig provided by a second embodiment of the present technology.

Lens module assembly fixture ‧‧10

First assembly ‧‧12

First Coordination Department ‧‧‧121

Containment Department ‧‧122

First Assembly Department ‧‧‧123

First coordination structure ‧‧‧124

First assembly surface ‧‧‧125

Containing holes ‧ ‧ 126

Second assembly ‧‧14

Compression ‧‧‧141

Resisting rod ‧ ‧ 142

Bottom wall ‧ ‧ 143

Side wall ‧‧‧144

Second coordination structure ‧ ‧ 145

Second assembly surface ‧‧‧146

Claims (10)

A lens module assembly jig for assembling a first optical component and a second optical component into a lens barrel, wherein the lens module assembly jig includes a first assembly and a second assembly, first The assembly has a receiving hole for receiving the second assembly, the first assembly has one end having a first mating structure, and the other end has a first assembly surface for contacting the first optical component to An optical component is assembled into the lens barrel, one end of the second assembly has a second mating structure, and the other end has a second assembly surface corresponding to the first mating structure for detaching the second assembly Mounted to the first assembly, the second assembly surface is for contacting the second optical component with the first assembly surface to assemble the second optical component into the lens barrel. The lens module assembly jig according to claim 1, wherein the first mating structure comprises at least two protrusions, and the second mating structure comprises at least two grooves, the protrusions and the grooves correspond. The lens module assembly jig according to claim 2, wherein an angle between the extending direction of the groove and the axial direction of the second assembly is 0-60°. The lens module assembly jig according to claim 1, wherein the first mating structure is an external thread, and the second mating structure is an internal thread corresponding to the external thread. The lens module assembly jig of claim 1, wherein the second assembly comprises a first mating portion, a receiving portion and a first assembling portion that are sequentially connected, the first mating structure surrounding the first The axis of the mating portion is equiangularly distributed to the first mating portion, and the first assembly surface is formed in the first assembly The receiving hole penetrates the first engaging portion, the receiving portion, and the first assembling portion. The lens module assembly jig according to the first aspect of the invention, wherein the second assembly comprises a pressing member and a pressing rod, wherein the diameter of the pressing rod is less than or equal to a diameter of the receiving hole, the pressing The second fitting structure is formed on one end of the pressing rod, and the second fitting surface is formed on the other end of the pressing rod. A method for assembling a lens module using the lens module assembly jig according to claim 1, comprising the steps of: providing a first optical component, a second optical component, and a lens barrel; and making the first assembly The assembly surface is in contact with the first optical component, and the first assembly is pressed to assemble the first optical component into the lens barrel; the second assembly is passed through the receiving hole of the first assembly, and the first mating structure is The second mating structure cooperates to fix the second assembly to the first assembly; the second assembly surface is brought into contact with the second optical component together with the first assembly surface, and the second assembly is pressed to apply the second optical component group Into the lens barrel. The method of assembling a lens module according to claim 7, wherein the first optical component comprises a first optical portion for optical imaging and a first fixing portion surrounding the first optical portion, first The first fixing portion is in contact with the first assembly surface when the assembly surface is in contact with the first optical element. The method of assembling a lens module according to claim 7, wherein the second optical component comprises a second optical portion for optical imaging and a second fixing portion surrounding the second optical portion, and a second The second optical portion and the second group when the assembly surface is in contact with the second optical element together with the first assembly surface The mounting surface is in contact with the second fixing portion in contact with the first assembly surface. The method of assembling a lens module according to claim 7, wherein the second optical component is a ring structure having a connecting inner side wall and a first surface, and the second assembly surface is combined with the first assembly surface. When the second optical element is in contact, the first surface is in contact with the first assembly surface, and the inner sidewall is in contact with the second assembly surface.