CN100499748C

CN100499748C - Lens module having dust-catch structure

Info

Publication number: CN100499748C
Application number: CNB2006100781745A
Authority: CN
Inventors: 刘凉荣; 陈志清
Original assignee: Chicony Electronics Co Ltd
Current assignee: Chicony Electronics Co Ltd
Priority date: 2006-04-28
Filing date: 2006-04-28
Publication date: 2009-06-10
Anticipated expiration: 2026-04-28
Also published as: CN101064772A

Abstract

The invention relates to a kind of lens cluster with catch-dirt structure, which includes lens cluster, base plate and image sensing unit, there is a hollow to cover the image sensing unit, and the lens cluster and the base plate aim for the image sensing unit, the characteristic is that: there is a inverse ladder structure along the inner wall of base plate, and cohesive film is mounted on the surface of inverse ladder structure to catch the dust produced by friction between the lens cluster and base plate to accord with the requirement for dust in lens cluster, and reduces the dust attach to image sensing unit with catch-dirt structure.

Description

Camera lens module with dust-catch structure

Technical field

The present invention is about a kind of module with dust-catch structure, and more clearly, the present invention is that a kind of module inwall that utilizes forms the camera lens module with dust-catch structure that the inverted steps shape structure with mucous membrane is caught fricative dust between module.

Background technology

The electronic industry in modern age is flourish constantly, electronic product miscellaneous makes people's life more comfortable and convenient, especially at present the high-resolution of optical articles and the requirement of precision, monitoring is often being perplexed the producer with the quality assurance problem for the dirt degree in the camera lens module, therefore, how reducing or improve the interior Dust Capacity of camera lens module has been an important subject under discussion and a project.

Camera lens module internal dust subject under discussion occurs in the dust that is produced when locking the camera lens module to its corresponding base mostly, and this dust can cover the photosensitive effect of optical element; Generally speaking, in the action that module locks, coated lubricating oil and reduce powder amount mostly, but can't solve the dust that still produces, its practicality still has its bottleneck and restriction.

In addition, for at the dust of module internal, also having at present generally technology that the below of Image Sensor is provided with a stickiness catches the dust device and catches dust in module internal, but shortcoming is its position setting and is lower than Image Sensor consequently when locking in the process of module, can't effectively also catch dust immediately fast, make dust landing to specific position just can drop to be positioned at the dust of Image Sensor below to catch mechanism and must rock, and in this process, do not need a large amount of time of cost and effect good and remain to be improved by external force.

Summary of the invention

Technical problem to be solved by this invention is can't effectively and fast catch dust immediately at prior art, catch mechanism and must make dust landing to specific position just can drop in the dust of Image Sensor below, consuming time and shortcoming that effect is not good in the process and the camera lens module with dust-catch structure of dust in a kind of module of catching a good shot is provided, the dust that when module is installed, is produced in the elimination process immediately, and continue to catch the dust that still exists after module is installed, it is respond well to catch dirt.

Technical scheme of the present invention is: a kind of camera lens module with dust-catch structure, comprise a lens module, a base and an Image Sensor, this base forms a ducted body and contains this Image Sensor, and this lens module is bonded to this base and aims at this Image Sensor; Also comprise an inverted steps shape structure, be positioned at the below of base and the upper end of base bottom Image Sensor group, this inverted steps shape structure is positioned at the opening side of placing, the adjusting thread below of this base; This inverted steps shape structure has the adhesive films of release layer, the adhesive films of this release layer is two-sided adhesive films, be positioned at the surface below position of inverted steps shape structure, and the big palpulus of its opening size meets the effective coverage of Image Sensor, its effect is the dust that can be produced in the elimination process immediately when module is installed, and continues to catch the dust that still exists after module is installed.

Preferably, adhesive films can be a colloid with stickiness, it can be attached to the surface below of inverted steps shape structure.

Effect of the present invention is significant: one appropriate location, camera lens module base below with dust-catch structure of the present invention is provided with an inverted steps shape structure along this base inner wall, put an adhesive films on the surface of this inverted steps shape structure and catch dust in the set of lenses, therefore, the dust that when module is installed, is produced in the elimination process immediately, and continue to catch the dust that still exists after module is installed, it is respond well to catch dirt.

Description of drawings

Fig. 1 has the view sub-anatomy of the camera lens module of dust-catch structure for the present invention, and it analyses and observe the A-A direction of direction for Fig. 4 A.

Fig. 2 has the assembled sectional view of the camera lens module of dust-catch structure for the present invention.

Fig. 3 is the folded structure cutaway view of inverted steps shape structure of the present invention and adhesive films.

Fig. 4 A has the vertical view that the base of the camera lens module of dust-catch structure combines with adhesive films for the present invention.

Fig. 4 B has the upward view that the base of the camera lens module of dust-catch structure combines with adhesive films for the present invention.

The main element symbol description

10...... have the camera lens module 20...... lens module of dust-catch structure

21...... lens frame 22...... regulates screw thread

23...... set of lenses 30...... base

31...... inverted steps shape structure 32...... regulates screw thread

50...... adhesive films 51...... sticky stuff

52...... base material 60...... Image Sensor

70...... circuit board 80...... dust

Embodiment

See also shown in Fig. 1,2, show that respectively the present invention has the view sub-anatomy and the assembled sectional view of the camera lens module 10 of dust-catch structure.The camera lens module 10 that the present invention has dust-catch structure comprises: the adjusting thread 22 that a lens module 20, this lens module 20 see through lens frame 21 peripheries screw in bases 30 in enclose and regulate thread 32 and combine with base 30; One base 30 is provided with an inverted steps shape structure 31 in this base 30; One Image Sensor 60 is positioned at the below of the top corresponding inverted steps shape structure 31 of circuit board 70; With an adhesive films 50, this adhesive films 50 has two-sided stickiness, and this two-sided adhesive films 50 is positioned on the surface of inverted steps shape structure 31.

In an embodiment of the present invention, this lens module 20 is a round barrel shape, these lens module 20 peripheries are a lens frame 21, this lens frame 21 coats set of lenses 23, these lens frame 21 peripheries have one and regulate thread 22, enclose adjusting thread 32 in these adjusting thread 22 screw-in bases 30 and combine with base 30.

In addition, the side of placing has an adjusting thread 32 in the opening of this base 30, calculates the corresponding combination that makes it to conform to adjusting thread 22 processes of lens module 20; The side of placing has an inverted steps shape structure 31 below regulating thread in the opening of base 30, and these inverted steps shape structure 31 horizontal sectional areas are that a rectangle is removed the area that inscribe one circular back is stayed in the present embodiment, and its sectional area can stick thereon for adhesive films 50.

Inverted steps shape structure 31 belows are one to calculate suitably that distance can not touch the Image Sensor 60 that is attached to circuit board 70; Its Image Sensor 60 then is incorporated on the circuit board 70, and this circuit board 70 is combined closely with the lower end of base 30.

Please refer to Fig. 3 and Fig. 4 A, shown in the 4B, this adhesive films 50 is a similar sandwich layer structure, coat sticky stuff 51 up and down by a base material 52, and outermost coating release layer constitutes, when when if two-sided adhesive films 50 need be attached to sectional area on the inverted steps shape structure 31, the release layer that promptly separates the two-sided adhesive films 50 of this demand makes the double-sided adhesive characteristic material 51 with stickiness stick on inverted steps shape structure 31, when this two-sided adhesive films 50 is attached to inverted steps shape structure 31 surfaces, can be caught and, utilize external force to rock module and make dust 80 move to the catching position that this sticks together at the dust 80 that when lens module 20 is incorporated into base 30, produces at the dust 80 that when module is finished, still exists.

The shape of this adhesive films 50, it is a hollow out geometric figure shape, as shown in Figure 2, the position of hollow out can see through for light, and the area size of hollow out is a benchmark not interfere this set of lenses optics sensing behavior, admittedly can be at the size of required photosensitive region design adhesive films 50 hollow outs, the big I of its fretwork area be designed to less than, be equal to or greater than the area in this set of lenses cross section; In addition, also can utilize external force to rock module makes dust 80 move to this catching position that sticks together to reach the seizure effect.

Consult Fig. 1,2 once more, the predeterminated position on the circuit board 70 is provided with an Image Sensor 60, and base 30 will be contained Image Sensor 60 and be attached to this circuit board 70, so that lens module 20 sealed aligning Image Sensors 60.

Claims

1. camera lens module with dust-catch structure, comprise a lens module, a base and an Image Sensor, this base forms a ducted body and contains this Image Sensor, and this lens module is bonded to this base and aims at this Image Sensor, it is characterized in that: have an inverted steps shape structure along this base inner wall, this inverted steps shape structure be positioned at this base the opening side of placing, regulate the thread below, and put an adhesive films on the surface of this inverted steps shape structure and catch dust in this camera lens module.

2. the camera lens module with dust-catch structure as claimed in claim 1 is characterized in that: this lens module has the lens frame that a set of lenses and coats this set of lenses, and this adhesive films is a hollow out geometric figure.

3. the camera lens module with dust-catch structure as claimed in claim 2 is characterized in that: the geometric area of this adhesive films hollow out is less than the area in this set of lenses cross section.

4. the camera lens module with dust-catch structure as claimed in claim 2 is characterized in that: the geometric area of this adhesive films hollow out equals the area in this set of lenses cross section.

5. the camera lens module with dust-catch structure as claimed in claim 2 is characterized in that: the geometric area of this adhesive films hollow out is greater than the area in this set of lenses cross section.

6. the camera lens module with dust-catch structure as claimed in claim 1 is characterized in that: this adhesive films is a stratiform structure, and the upper and lower surface coating sticky stuff by a base material covers release layer again and constitutes.

7. the camera lens module with dust-catch structure as claimed in claim 1 is characterized in that: this adhesive films is one to have the colloid of stickiness, it can be attached on this inverted steps shape structure.