CN102998768A

CN102998768A - Lens module

Info

Publication number: CN102998768A
Application number: CN2011102684011A
Authority: CN
Inventors: 陈柏瑜
Original assignee: Asia Optical Co Inc
Current assignee: Asia Optical Co Inc
Priority date: 2011-09-09
Filing date: 2011-09-09
Publication date: 2013-03-27

Abstract

The invention relates to a lens module, which comprises a fixed cylinder, a cam cylinder and at least one bolt. The lens module comprises a fixed cylinder, a lens module and a lens module, wherein the wall of the fixed cylinder is provided with at least one long through hole, and the length of the long through hole in a first direction parallel to the optical axis of the lens module is greater than that in a second direction perpendicular to the first direction; the cam cylinder is arranged in the fixed cylinder in a penetrating way; the wall of the cam barrel is provided with at least one screw hole which is communicated with the long through hole; the bolt is provided with a body part and a head part which are connected, and the outer diameter of the head part is larger than that of the body part; the body part passes through the long through hole to be screwed with the screw hole; the head part is pressed against the wall of the fixed cylinder.

Description

Camera lens module

Technical field

The present invention is relevant with optical devices, in more detail refers to a kind of camera lens module.

Background technology

Along with image science and technology is showing improvement or progress day by day, device for image and optical lens thereof are also day by day accurate in design, yet, in the encapsulation procedure of optical lens, can when making or assemble, there be unavoidably a little error or tolerance to produce, after above-mentioned error or tolerance stack, will so that this optical lens after assembling is finished, thereafter burnt easily the generation is offset, and causes having the situation of image blur to produce, and then causes the low situation of image quality of the device for image with this camera lens to occur.

For solving the problem of above-mentioned rear burnt skew, install the side-play amount that pad compensates rear Jiao additional more than this optical lens rear side greatly, yet, burnt side-play amount is not quite similar after each optical lens, therefore, if carry out rear burnt compensation with said method, then must make the pad of multiple different-thickness, certainly will thereby cause the cost lifting.

See also Fig. 1, for solving above-mentioned shortcoming, satisfying research and development has a kind of camera lens module 2, and it consists predominantly of stationary magazine creel 100, cam canister 150 and complex root bolt 200.Wherein, have a plurality of screws 110 on this stationary magazine creel 100; This cam canister 150 is arranged in this stationary magazine creel 100, and can see through the purpose that moves to reach the rear burnt skew of compensation along the optical axis of this camera lens module 2; These bolt 200 spiral shells are located at respectively in this screw 110.By this, after the position of burnt compensation behind this cam canister 150 is fixing, just sees through a side pressure that these bolts 200 pass this screw 110 and be butted on this cam canister 150 and reach the effect of fixing this cam canister 150.

Yet, though the design of Fig. 1 can reach the purpose of the rear burnt skew of compensation, but see through the fixed form that bolt 200 directly is pressed against this cam canister 150, with the phenomenon that easily causes this cam canister 150 distortion to be arranged or tilt, this will cause this cam canister 150 can be pressed against on other lens barrel in order to zoom, and then so that the load of zoom driving motor promote, more have what is more the zoom driving motor band not moving lens barrel situation about moving occur.Be with, comprehensively the above can be learnt, after the existing compensation design of burnt side-play amount do not attain yet perfect, and the part that still haves much room for improvement.

Summary of the invention

The technical problem to be solved in the present invention is, though can compensate the rear burnt defective that is offset but easily causes the cam canister distortion or tilt for camera lens module of the prior art, a kind of camera lens module is provided, not only can reach the purpose of the rear burnt skew of compensation, the phenomenon generation that more can not cause cam canister that distortion is arranged or tilt.

The present invention is that the technical scheme that its technical matters of solution adopts is, a kind of camera lens module is provided, and includes stationary magazine creel, cam canister and at least one bolt.Wherein, have the perforation of at least one elongated on the barrel of this stationary magazine creel, and this elongated is bored a hole length on the first direction of parallel this camera lens module optical axis greater than perpendicular to the length on the second direction of this first direction; This cam canister is arranged in this stationary magazine creel; Have at least one screw on the barrel of this cam canister, and this screw is communicated with this elongated perforation; This bolt has continuous body section and head, and the external diameter of this head is greater than the external diameter of this body section; This elongated perforation and this screwhole spiro bonding is passed by this body section; This head then is pressed against on the barrel of this stationary magazine creel.

By this, see through above-mentioned structural design and not only can see through the purpose that mobile this cam canister reaches the rear burnt skew of compensation, and utilize the method that bolt directly is locked on the screw of this cam canister, more can not cause cam canister to have the phenomenon of distortion or inclination to occur.

Description of drawings

Fig. 1 is the cut-open view of existing camera lens module.

Fig. 2 is the exploded view of camera lens module of the present invention.

Fig. 3 is the stereographic map of stationary magazine creel of the present invention.

Fig. 4 is the structural drawing of elongated perforation of the present invention.

Fig. 5 is the cut-open view of camera lens module of the present invention.

Fig. 6 is the stereographic map of another embodiment of the present invention stationary magazine creel and cam canister.

Embodiment

For being illustrated more clearly in the present invention, hereby lifting preferred embodiment and cooperate accompanying drawing to be described in detail as follows.

See also Fig. 2, the camera lens module 1 of preferred embodiment of the present invention includes stationary magazine creel 10, cam canister 20, rotary cylinder 30, first mirror group frame 40, the second mirror group frame 50 and six bolts 60.Wherein:

See also Fig. 3, the mode that has to be equally spaced on the barrel of this stationary magazine creel 10 is around three the first grooves 11 and three the second grooves 12 of arranging, and respectively this first groove 11 and this second groove 12 respectively respectively with along the first direction D1 spread configuration of the optical axis of parallel this camera lens module 1 on the barrel of this stationary magazine creel 10.These

grooves

11,12 bottom land have respectively elongated perforation 13, and respectively this

groove

11,12 internal diameter greater than the internal diameter of this elongated perforation 13.In addition, see also Fig. 4, respectively the length L 1 of this elongated perforation 13 on this first direction D1 is greater than perpendicular to the length L 2 on the second direction D2 of this first direction D1.Moreover, along respectively this first groove 11 of this first direction L1 spread configuration and respectively have respectively the escape hole 14 that connects these stationary magazine creel 10 barrels between this second groove 12.

This cam canister 20 is fixedly arranged in this stationary magazine creel 10.These elongateds that correspond to this stationary magazine creel 10 on the barrel of this cam canister 20 13 places of boring a hole have respectively screw 21, and these screws 21 are communicated with this elongated perforation 13 respectively respectively.In addition, the cam hole 22 that has three tool certain-lengths on this cam canister 20 and extend along this first direction D1.

This rotary cylinder 30 is arranged in this cam canister 20, and this rotary cylinder 30 can rotate in this cam canister 20 through the mode that the motor (not shown) drives.In addition, have respectively three the first guide holes 31 and three the second guide holes 32 that are communicated with this cam hole 22 respectively on the barrel of this rotary cylinder 30.

Be respectively equipped with lens set 70,75 in this first mirror group frame 40 and this second mirror group frame 50.In addition, have respectively three protruding axles 41,51 on the outer ring surface of this first mirror group frame 40 and this second mirror group frame 50, and these protruding axles 41 of this first mirror group frame 40 are arranged in respectively respectively in this first guide hole 31 and this cam hole 22 respectively, and these protruding axles 51 of this second mirror group frame 50 lay respectively at respectively in this second guide hole 32 and this cam hole 22 respectively.By this, driven by motor and when rotating, this first mirror group frame 40 and this second mirror group frame 50 will be subjected to respectively this first guide hole 31 with this second guide hole, 32 guiding and move along this cam hole 22, and then reach the purpose of zoom when this rotary cylinder 30.

See also Fig. 5, these bolts 60 have respectively continuous head 61 and body section 62, and the external diameter of this head 61 is greater than the external diameter of this body section 62.The body section 62 of these bolts 60 passes respectively respectively after this elongated perforation 13 and these corresponding screws 21 screw togather, and the head 61 of these bolts 60 then is pressed against respectively this groove 11 respectively, 12 bottom land.

Be with, when finding the phenomenon of rear burnt skew is arranged after 1 assembling of this camera lens module, just can see through and unscrew these bolts 60 to adjust the position of this cam canister 20, to use the purpose that reaches rear burnt migration.In addition, after adjustment is finished, see through and to screw head 61 that these bolts 60 make these bolts 60 and press in this groove 11 respectively, 12 bottom land and can reach the purpose of fixing these cam canister 20 positions, and above-mentioned fixing means does not also have the phenomenon that causes this cam canister 20 to produce distortion or tilt because compressing this cam canister 20, and so that this motor drives rotary cylinder 30 when rotating, do not have the situation that load promotes and occur.

In addition, but vacuum phenomenon and can be avoided producing between this stationary magazine creel 10 and this cam canister 20 with inner in the outside of this stationary magazine creel 10 of design conducting of above-mentioned these escape holes 14, and then the efficient can promote rear burnt adjustment the time.

Moreover, stationary magazine creel of the present invention and cam canister are except said structure, also can design with cam canister 90 by the stationary magazine creel 80 shown in 6, stationary magazine creel 10 differences of this stationary magazine creel 80 and last embodiment be its elongated perforation 83 be not with along the first direction D1 spread configuration of parallel optical axis on the barrel of this stationary magazine creel 80, but with staggered mode scattering device on the barrel of this stationary magazine creel 80, and this cam canister 90 corresponds to these elongateds 83 places of boring a hole and is provided with equally screw 91.By this, see through above-mentioned design the power of bolt 95 lockings is distributed on this cam canister 90 alternately, and then reach the purpose that this cam canister 90 is fixed in lifting.

The above only is the better possible embodiments of the present invention, such as uses equivalent structure and method for making variation that instructions of the present invention and claim are done, ought to be included in the claim of the present invention.

Claims

1. A lens module, characterized in that, comprising:

The fixed cylinder has at least one elongated perforation on the cylinder wall, and the length of the elongated perforation in the first direction parallel to the optical axis of the lens module is greater than the length in the second direction perpendicular to the first direction;

The cam cylinder is installed in the fixed cylinder; the cylinder wall of the cam cylinder has at least one screw hole, and the screw hole communicates with the elongated through hole; and

At least one bolt has a connected body and a head, and the outer diameter of the head is larger than the outer diameter of the body; the body passes through the elongated hole and is screwed into the screw hole; the head is pressed against on the wall of the fixed cylinder.

2. The lens module according to claim 1, wherein at least one groove is formed on the wall of the fixing cylinder, the bottom of the groove has the elongated perforation, and the inner diameter of the groove is larger than the length The inner diameter of the type perforation; in addition, the head of the bolt is pressed against the bottom of the groove.

3. The lens module according to claim 1, wherein the wall of the fixing tube has two elongated holes, and the elongated holes are arranged on the wall of the fixing tube along the first direction superior.

4 . The lens module according to claim 3 , wherein an air escape hole is further provided on the wall of the fixing cylinder between the two elongated through holes.

5 . The lens module according to claim 1 , wherein there are three elongated perforations on the wall of the fixing tube, and these elongated perforations are arranged on the side of the fixing tube in an equidistant manner. on the barrel wall.

6 . The lens module according to claim 1 , wherein the wall of the fixing tube has a plurality of elongated perforations, and these elongated perforations are arranged on the tube of the fixing tube in a staggered manner. on the wall.