JP3090759U - Lens-integrated camera module - Google Patents

Abstract

(57) [Problem] To provide a structure that can be assembled without using an adhesive so that an optical component is not adversely affected when an optical component such as a solid-state imaging device or a converging lens is mounted on a circuit board. SOLUTION: By joining a lens holder 10 and an outer case 4 with a fixing bracket 18, it is possible to reduce the number of assembling steps and improve the component yield as compared with the bonding method.

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens-integrated camera module used for mobile devices such as mobile phones and digital cameras, video cameras, and the like.

[0002]

2. Description of the Related Art FIG. 1 shows an example of a conventional camera module. In this camera module, a plurality of electronic components 3 and a solid-state imaging device 2 are mounted at predetermined positions on a circuit board 1, and a lower case 7 to which glass for IR / UV cut is attached covers the solid-state imaging device 2. The solid-state image pickup device 2 has a structure in which the upper case 6 to which the converging lens 8 is adhered is screwed into the opening of the lower case 7 to adjust the focus of an image and to prevent loosening. The gap between the joints of the components is filled with adhesive to prevent dust.

In such a camera module, light incident from an opening of an upper case 6 is condensed by a converging lens 8, formed into an image on a solid-state image sensor 2, received by a light receiving element (not shown), and It has the function and characteristics of converting it into a signal, converting it into an image signal with the electronic component 3 mounted on the circuit board 1, and outputting it to the outside.

[0004]

[Problem to be Solved by the Invention] However, the conventional camera module has the following problems. That is, in the conventional camera module, the circuit board 1 on which the solid-state imaging device 2 is mounted and the lower case 7 are assembled, the converging lens 8 and the upper case 6 are assembled, and the space formed by the circuit board 1 and the converging lens 8 is formed. Since an adhesive is used for sealing and preventing the screw portion of the upper case 6 from being loosened, the surface of the solid-state imaging device 3 and the converging lens 8 is stained with the adhesive during the operation, and the image quality deteriorates. In addition, since such adhesives are used to join the gangs, it is extremely uneconomical because it is not possible to regenerate defective products generated on the production line or to disassemble and reuse expensive members. In addition, as is well known, the curing process of the adhesive requires aging and heating in a batch-type drying furnace, and the stagnation in the process after the input of the work of assembling parts, etc. becomes long, and a large number of parts are stored or large work areas (Such as a clean room) and a product storage area.

In addition, a screw structure has been often used for adjusting the focal length of an image in an optical device because of its simple structure and easy handling, and it has been widely used in solid-state imaging devices. There is a limit to the demand for smaller and thinner solid-state imaging devices because there is no space for adopting the screw structure, and adjustment of the focal length of the image is screwed or loosened while judging the image quality with the sense of the operator. The complicated work that takes place in the solid-state imaging device occupies the largest number of man-hours in the assembly process, resulting in poor quality and productivity and high cost. It is an issue.

Accordingly, an object of the present invention is to provide a thin lens-integrated camera module which does not use an adhesive for an assembly structure or a sealed structure without damaging the functions and characteristics of the conventional camera module. It is in.

[0007]

Means for Solving the Problems Therefore, in order to achieve the above object, the present invention employs the following technical means. With the lens-integrated camera module of the present invention, the lens holder and the outer case are joined with the fixing bracket, so that the number of assembly steps and the component yield can be reduced as compared with the bonding method.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a lens-integrated camera module according to the present invention will be described with reference to the drawings. 2 and 3, the space between the converging lens 8 and the lens holder 10 is sealed with an elastic packing 6 and fixed with a metal or resin fixing metal 19 having a spring property. The circuit board 1 on which the solid-state imaging device 2 is mounted is fixed by a metal or resin fixing bracket 20 having a property. Further, the space is sealed with an elastic packing 15 between the lens holder 10 and the outer case 4 and fixed with a metal or resin fixing bracket 18 having spring properties. Also, a spacer 16 is appropriately inserted between the lens holder 10 and the outer case 4 to adjust the focal length of the image. Since the functions and characteristics are the same as those of the conventional camera module, the description is omitted.

Next, the lens-integrated camera module shown in FIGS. 4 and 5 has a cylindrical lens holder 10 and is fixed with a metal or resin fixing metal 21 having spring properties. Another embodiment

[0008] The structure and operation are the same as those of the lens-integrated camera module described in [1].

Next, the lens-integrated camera module shown in FIGS. 6 and 7 is provided with a concave portion in the lens holder 11 and fixed by a metal or resin fixing bracket 22 having spring properties. Another embodiment

The structure and operation of the camera module are the same as those of the lens-integrated camera module described above.

Next, in the lens-integrated camera module shown in FIGS. 8 and 9, the lens holder 12 is inserted into the outer case 5 so that the lens holder 12 and the outer case 5 are fixed with a metal or resin having a spring property. The circuit board 1 on which the solid-state imaging device 2 is mounted is clamped by the metal fitting 23 and fixed.

In any case, the above embodiment is characterized in that the structure of the core changes according to the specification, and in any case, it is non-adhesive and is fixed by a spring.

[Effects of the Invention] As described above, according to the inventions described in the first, second, and third aspects, the number of work steps can be reduced and parts can be reused by eliminating bonding work. In addition, it is possible to reduce stagnation and in-process inventory of components related to curing of the adhesive.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a conventional example of a camera module.

FIG. 2

FIG. 3 is a plan view of FIG.

FIG. 3 is a cross-sectional view showing an embodiment of a camera module with an integrated lens according to the present invention.

FIG. 4

FIG. 5 is a plan view of FIG.

FIG. 5 is a sectional view showing an embodiment of a camera module with an integrated lens according to the present invention.

FIG. 6

FIG. 7 is a plan view of FIG.

FIG. 7 is a sectional view showing an embodiment of a camera module with an integrated lens according to the present invention.

FIG. 8

FIG. 9 is a plan view of FIG.

FIG. 9 is a cross-sectional view illustrating an embodiment of a lens-integrated camera module according to the present invention.

[Explanation of symbols]

1 circuit board 13
Packing 2 Solid-state image sensor 14
Packing 3 electronic components 15
Packing 4 Outer case 16
Spacer 5 Outer case 17
Spacer 6 Upper case 18
Fixing bracket 7 Lower case 19
Fixing bracket 8 Convergent lens 20
Fixing bracket 9 Lens holder 21
Fixing bracket 10 Lens holder (circular type) 22
Fixing bracket 11 Lens holder (circular concave type) 23
Fixing bracket 12 Lens holder

Claims (3)

[Utility model registration claims] 1. A lens-integrated camera module comprising a circuit board on which a solid-state image pickup device is mounted, a casing joined to a filter, and a lens holder joined to a converging lens. Is fixed by a non-adhesive method. 2. The lens holder according to claim 1, wherein the lens holder is fixed to the outer case with an elastic member.
2. The lens-integrated camera module according to 1. 3. The lens-integrated camera module according to claim 2, wherein a packing is inserted between the lens holder and the outer case.