CN2665733Y

CN2665733Y - Digital cameras lens module

Info

Publication number: CN2665733Y
Application number: CN 200320118553
Authority: CN
Inventors: 江宗韦; 蔡明江; 李俊佑
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2003-11-22
Filing date: 2003-11-22
Publication date: 2004-12-22
Anticipated expiration: 2013-11-22

Abstract

The utility model relates to a lens module used for a digital camera, comprising a lens in which a lens unit, a bushing and a seat are arranged. An image sensor and a fixing ring are arranged in the seat, and the lens unit is arranged in the bushing which is arranged in the seat, and the bushing and the seat are fixed by the fixing ring. The zooming of lens is carried out in the bushing, and the comparative position cannot be changed after the zooming completed; and the bushing is arranged in the seat and the bushing can be horizontally screwed so as to make the light axis of the lens fall onto the center point of the image sensor in the seat, without impacting on the comparative position between the adjusted lens and the bushing and the best imaging quality can be reached. In the end the bushing and the seat are fixed together by the fixing ring to guarantee the stability of the whole lens module so as to guarantee the imaging quality.

Description

The digital camera lens module

[technical field]

The utility model is about a kind of digital camera lens module, especially about a kind of simple in structure, easy to assembly and can avoid producing the digital camera lens module of optical axis deviation.

[background technology]

Digital camera is day by day popularized, and people are also more and more higher to the requirement of its image quality, and the optical axis deviation problem that produces in the lens group process of assembling is for influencing one of key factor of image quality.

Please refer to shown in Figure 1, authorize and to disclose a kind of digital camera lens module for the Chinese patent of CN 2463846Y public number, this module comprises elastic body 10, pedestal 12, lens barrel 14 and stationary installation 16, wherein, this pedestal 12 is placed on the circuit board 18, and its inside is equipped with image sensor 121, this image sensor 121 is electrically connected with this circuit board 18, this pedestal 12 has bottom 123 and fixing threaded hole 125, this bottom 123 is provided with a plurality of positioning screw holes 127, and it is coaxial corresponding with a plurality of positional punches 181 on the circuit board 18, this elastic body 10 is packing rings of being made by elastic material, and bearing is on the top board 183 of this circuit board 18, be surrounded on the periphery of this image sensor 121, this lens barrel 14 is to be locked in the fixing threaded hole 125 of this pedestal 12 with screw thread, and be mounted with lens 141 in it, the function of this stationary installation 16 is to be connected this pedestal 12 and this circuit board 18, in order to adjust and to fix the distance of 18 of this pedestal 12 and this circuit boards, this stationary installation 16 comprises a plurality of screws 161, each screw 161 passes the positional punch 181 on each circuit board 18 respectively from these circuit board 18 bottom surfaces, and be locked in each positioning screw hole 127 of these pedestal 12 bottoms, pass through combinations thereof, when desire is adjusted these lens 141 to the distance (focal length) of 121 of this image sensor, need utilize turnscrew (figure does not show), adjust each screw 161 respectively and be locked on the degree of depth in each positioning screw hole 127, and then compression or discharge elastic body 10 and change the distance of lens 141 to 121 of this image sensor, reach the purpose of focusing, yet, a plurality of screws 161 need to adjust respectively, inevitable more loaded down with trivial details in the operation, and the degree of depth that each screw 161 screws in each positioning screw hole 127 is difficult for reaching consistent, and make lens 141 produce, thereby cause optical axis to produce deviation, influence image quality; And the elastic break-down that loosening and elastic body 10 take place screw 161 also can cause the bias phenomenon of optical axis; In addition, when being pressed into lens 141 in the lens barrel 14, cannot say for sure to demonstrate,prove it on horizontal level; Moreover the screw thread of lens barrel 14 and pedestal 12 also may cause the optical axis of lens 141 not corresponding with image sensor 121 centers because of machining tolerance during cooperation, and produces offset issue.

Therefore, provide a kind of digital camera lens module simple in structure, easy to assembly and that can avoid producing optical axis deviation to be necessity in fact.

[summary of the invention]

It is a kind of simple in structure, easy to assembly and can avoid producing the digital camera lens module of optical axis deviation that the purpose of this utility model is to provide.

In order to realize the purpose of this utility model, the utility model provides a kind of digital camera lens module, comprise camera lens, be mounted with lens combination in it, sleeve, pedestal are equipped with image sensor in this pedestal, and set collar, this camera lens is placed in this sleeve, and this sleeve is placed in the pedestal, and is fixed by this set collar between sleeve and pedestal.

Wherein, camera lens is focused in sleeve, mixes up defocusedly, and its relative position just can not change, and sleeve is placed in the pedestal, fall into for the optical axis that makes camera lens on the central point of the image sensor in the pedestal, can be on horizontal level turnbarrel, and do not influence the camera lens that mixed up and the relative position between sleeve, thereby can reach best image quality, with set collar sleeve and pedestal are fixed together at last, can guarantee the steadiness of whole camera lens module structure, and then guarantee its image quality.

[description of drawings]

Fig. 1 is the structural representation of existing digital camera lens module;

Fig. 2 is the three-dimensional exploded view of the utility model digital camera lens module;

Fig. 3 is the cut-open view of the exploded view of the utility model digital camera lens module;

Fig. 4 is the structural representation after the assembling of the utility model digital camera lens module.

[embodiment]

The utility model digital camera lens module is applicable to the portable electron devices such as mobile phone of digital camera or tool digital camera lens.

Please in conjunction with reference Fig. 2 and shown in Figure 3; the utility model digital camera lens module comprises camera lens 30; sleeve 32; pedestal 34 and set collar 36; be mounted with a lens combination 305 within the camera lens 30; its top offers a circular hole (not indicating); glazed lid 303 on this circular hole; in order to protection lens combination 305 and prevent impurity such as dust from entering in the camera lens 30 and influence image quality; the light signal of object can be injected in the sleeve 32 by this cover glass 303; the outer surface of camera lens 30 is provided with external thread 301; sleeve 32 is cylinders; in order to ccontaining camera lens 30; its outer surface is divided into two parts up and down; the diameter of bottom is greater than top; its inner surface is provided with internal thread 321; in order to be meshed with the external thread 301 of camera lens 30; the height of camera lens 30 is greater than the height of sleeve 32; pedestal 34 is square casings; its inside is provided with a passage; in order to ccontaining image sensor 345; and the light signal of object is transformed into electric signal; form a boss 343 on the inwall of this pedestal 34; in order to supporting sleeve 32; this boss 343 is less than or equal to the height of sleeve 32 outer surface bottoms to the distance of the channel roof of pedestal 34; so that the bottom of sleeve 32 outer surfaces can be placed in it; the sidewall outer surface of this pedestal 34 is provided with external thread 341; set collar 36 is circular; its inboard is divided into two parts up and down; upper part diameter is less than the diameter of bottom; the inner surface of bottom is provided with internal thread 361; in order to being meshed with external thread 341 on the pedestal 34, and its upper part diameter equals sleeve 32 upper part diameter.

Please in conjunction with reference Fig. 4, during assembling, earlier sleeve 32 is pressed in the passage of pedestal 34, then set collar 36 is placed on the pedestal 34 and rotation makes the internal thread 361 on it be meshed with external thread 341 on the pedestal 34, and screw to pin sleeve 32 and pedestal 34, again camera lens 30 is screwed in the sleeve 32, internal thread 321 is meshed with external thread 301, camera lens 30 is screwed in to predetermined focal position, in internal thread 321 relative position of place's gluing that be meshed with external thread 301 with 32 in fixed lens 30 and sleeve, this moment, the focal length of this camera lens module mixed up, yet, the tolerance or the lens combination 305 that cooperate with sleeve 32 owing to camera lens 30 are pressed into the deflection that causes in the camera lens 30, can make the center that can not fall within image sensor via the incident light of lens combination 305, so, the set collar 36 of outwarding winding, turnbarrel 32 makes the optical axis of camera lens 30 just in time fall into the central point of image sensor, to reach best imaging effect, at last, the ring 36 that is tightened again, and be meshed with external thread 341 in internal thread 361 and locate the relative position of gluing with 34 of fixed muffle 32 and pedestals, so far, this camera lens module installs, and has reached best imaging effect.

Claims

1. digital camera lens module, comprise camera lens, sleeve and pedestal, be mounted with lens combination in the described camera lens, this lens combination is made up of at least one lens, is equipped with image sensor in this pedestal, it is characterized in that: this camera lens module also comprises set collar, wherein, this camera lens is placed in this sleeve, and this sleeve is placed in the pedestal, and sleeve and pedestal are to be fixed by this set collar.

2. digital camera lens module as claimed in claim 1 is characterized in that: the outer surface of described camera lens is provided with external thread.

3. digital camera lens module as claimed in claim 1 is characterized in that: described camera lens top offers a circular hole, studs with a cover glass in this circular hole.

4. digital camera lens module as claimed in claim 2 is characterized in that: the inner surface of described sleeve is provided with internal thread, and this internal thread cooperates with the external thread of this camera lens.

5. digital camera lens module as claimed in claim 4 is characterized in that: the outer surface of described sleeve is divided into two parts up and down, and the diameter of bottom is greater than upper part diameter.

6. digital camera lens module as claimed in claim 5 is characterized in that: be provided with a passage in the described pedestal, and form a boss in this pedestal passage.

7. digital camera lens module as claimed in claim 6 is characterized in that: the outer surface of described pedestal sidewall is provided with external thread.

8. digital camera lens module as claimed in claim 6 is characterized in that: described boss is less than or equal to the height of described sleeve outer surface bottom to the distance of pedestal channel roof.

9. digital camera lens module as claimed in claim 5 is characterized in that: described set collar is circular, and its inboard is divided into two parts up and down, and upper part diameter is less than the diameter of bottom, and upper part diameter equals the diameter of described upper cartridge.

10. digital camera lens module as claimed in claim 9 is characterized in that: the inner surface of the bottom of described set collar is provided with internal thread.