CN201000501Y - Optical focusing and automatic focusing mechanical system - Google Patents

Abstract

The utility model relates to an optical focusing and auto-focusing mechanical system for high pixel cell-phone camera lens. The utility model aims at overcoming the defects of the prior art and providing a mechanical system which has a small structure and can realize optical focusing and automatic focusing. The cam cylinder comprises a fixed cylinder cam cylinder, a first group frame, a second group frame, a third group frame, a shell and a motor group, wherein the fixed cylinder cam cylinder plays a role in supporting and positioning, the first group frame, the second group frame, the third group frame and the third group frame are arranged in the fixed cylinder, the cam cylinder is sleeved on the fixed cylinder, the first group frame and the second group frame are limited and guided by the cam cylinder and the fixed cylinder, one end of the third group frame is arranged in the fixed cylinder, the other end of the third group frame fixedly extends out of the fixed cylinder to be connected with the focusing motor and is driven by the focusing motor to move up and down, the zooming motor drives the cam cylinder to rotate, and the first group frame and the second group frame are driven by the rotation of the cam cylinder to move up and.

Description

A kind of optics focusing and the mechanical system of focusing automatically

[technical field]

The utility model relates to the miniature focusing system of high pixel, more particularly is a kind of optics focusing of high-pixel mobile phone lens and mechanical system of focusing automatically of being used for.

[background technology]

The digital camera lens of the camera cell phone of Xiao Shouing in the market, it mainly is the camera lens of 300,000,1,300,000 pixels, camera cell phone than higher gears, dispose the digital camera lens of 2,000,000 even 3,000,000 pixels, this class camera lens is not owing to there is focus function, for the filmed image that guarantees different distance scenery can not have too big difference, in the optical texture design, just can not satisfy the lightness and the contrast of taking picture element.For taking in-plant scenery, owing to do not have focusing system and zoom system, pancreatic system, the scenery image will be smudgy.But, the tight shot shooting mobile phone that popular camera cell phone is used on the present market, for taking object nearer or far away, because it does not have zoom function, object will seem fuzzy and image planes are differentiated unclear, no matter captured photograph picture element is the restriction that the contrast of whole sharpness, lightness or image planes is added shooting distance, and effect is not very desirable.The development trend of camera cell phone be digital camera lens by low picture element to high picture element, by focusing digital camera lens to the digital camera lens of focusing, to optical zoom number camera lens, and existing camera cell phone does not all have this function by focus lens.

For solving above-mentioned existing problem, the utility model is made useful improvement.

[utility model content]

The purpose of this utility model is in order to overcome the prior art deficiency, and provide a kind of structure small and exquisite, can realize the optics focusing and the mechanical system of focusing automatically.

In order to solve the technical matters of above-mentioned existence, the utility model adopts following technical proposal:

A kind of optics focusing and the mechanical system of focusing automatically, included the stationary magazine creel cam canister and first that supports positioning action, two, the three groups of frames and shell and groups of motors, this groups of motors includes focusing motor and zoom motor, it is characterized in that: described first, two groups of frames are arranged in the stationary magazine creel, described cam canister is enclosed within on the stationary magazine creel, described first, the two groups of frames are by cam canister and stationary magazine creel is spacing and guiding, one end of described the 3rd group of frames is located in the stationary magazine creel, the other end stretches out surely that stationary magazine creel is connected with the focusing motor and by in the focusing motor drive, move down, described zoom motor drives cam canister and rotates, and the rotation of cam canister drives first, the two groups of frames do relative on, move down;

The aforesaid a kind of optics focusing and the mechanical system of focusing automatically, it is characterized in that: described first, the frame lower edge of two groups of frames is respectively equipped with first, the second guide shaft group, have first at described cam canister inside surface, the second zoom curved groove group, on the barrel of stationary magazine creel, have first, the second straight-line groove group, the first guide shaft group of described first group of frame is passed the first straight-line groove group on the stationary magazine creel and is entered on the cam canister in the corresponding first zoom curved groove group, and the second guide shaft group of described second group of frame is passed the second straight-line groove group on the stationary magazine creel and entered on the cam canister in the corresponding second zoom curved groove;

The aforesaid a kind of optics focusing and the mechanical system of focusing automatically, it is characterized in that: described the 3rd group of frames are provided with a pilot hole and a threaded hole, and pilot hole is positioned on the stationary magazine creel by axle, and the screw rod on threaded hole and the focusing motor matches;

The aforesaid a kind of optics focusing and the mechanical system of focusing automatically, it is characterized in that: the outside lower end of described cam canister is provided with gear ring, described zoom motor also has been provided with the gear set of transmission gear shift effect, make the motor gear that is located on the zoom motor axle by under the middle transmission gear effect, by the gear ring on the driving gear drives cam canister, cam canister is rotated and drive first and second group frame thus and do relative upper and lower moving;

The aforesaid a kind of optics focusing and the mechanical system of focusing automatically, it is characterized in that: first, second zoom curved groove group of described cam canister includes three equally distributed zoom curved grooves separately, first, second guide shaft group of first and second group frame, also include three equally distributed guide shafts separately, each guide shaft enters in the corresponding zoom curved groove;

The aforesaid a kind of optics focusing and the mechanical system of focusing automatically, it is characterized in that: autofocus system and optical focal distance setting system that described stationary magazine creel cam canister first, second and third group frame and groups of motors are formed, this system meets the following conditions: focusing is that 7cm is to infinity from (AF); Zooming range (f)=2.8 ∽ 14.4mm;

The aforesaid a kind of optics focusing and the mechanical system of focusing automatically, it is characterized in that: the material of the gear set on the zoom motor is a plastic cement.

The utility model compared with prior art has following advantage:

Because the utility model adopts stationary magazine creel, cam canister and first, second and third group frame and groups of motors to form, and has realized autofocus system and optical focal distance setting system, advantage is as follows:

1) design of solution high pixel minitype mobile lens optical zoom and autofocus system;

2) cam canister adopts special cam mechanism, realizes problem and repeatable accuracy height, the advantages such as precision is reliable, size is little, compact conformation of the accuracy of lens optical zoom action;

3) solve the problem of camera lens focusing, 7cm is to the shooting of can focusing of infinite distance scenery;

4) solve the optical zoom of camera lens repetition and the reliability of autofocus system precision;

5) microminiaturization of solution optical zoom and autofocus lens.

[description of drawings]

Fig. 1 is an explosive view of the present utility model;

Fig. 2 is the explosive view that the utility model removes decapsidate;

Fig. 3 is the stereographic map that the utility model removes decapsidate;

Fig. 4 is the stereographic map of first and second group of the utility model frame;

Fig. 5 is the explosive view of first and second group of the utility model frame;

Fig. 6 is one jiao the stereographic map of cutting of the utility model cam canister and first group of frame;

Fig. 7 is one jiao the stereographic map of cutting of the utility model cam canister and second group of frame;

Fig. 8 is the vertical view of the utility model gear set.

[embodiment]

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

A kind of optics focusing and the mechanical system of focusing automatically, included the stationary magazine creel 1 that supports positioning action, cam canister 2 and first, two, three groups of frames 3,4,5 and shell 6 and groups of motors 7, this groups of motors 7 includes focusing motor 71 and zoom motor 72, it all belongs to the miniature high-precision step motor, stable drive, accurate positioning, but repeatable accuracy height, described first, two groups of frames 3,4 are arranged on 1 li of stationary magazine creel, described cam canister 2 is enclosed within on the stationary magazine creel 1, described first, two groups of frames 3,4 by cam canister 2 and stationary magazine creel 1 spacing and guiding, one end of described the 3rd group of frames 5 is located at 1 li of stationary magazine creel, the other end stretches out surely that stationary magazine creel 1 is connected with focusing motor 71 and by in the drives of focusing motor 71, move down, described zoom motor 72 drives cam canister 2 and rotates, and the rotation of cam canister 2 drives first, two groups of frames 3,4 do relative on, move down.

Described first, two groups of frames 3,4 frame lower edge is respectively equipped with first, the second guide shaft group 31,41, have first at described cam canister 2 inside surfaces, the second zoom curved groove group 21,22, on the barrel of stationary magazine creel 1, have first, the second straight- line groove group 11,12, the first guide shaft group 31 of described first group of frame 3 is passed the first straight-line groove group 11 on the stationary magazine creel 1 and is entered on the cam canister 2 21 li of the corresponding first zoom curved groove groups, the second guide shaft group 41 of described second group of frame 4 is passed the second straight-line groove group 12 on the stationary magazine creel 1 and is entered on the cam canister 2 22 li of the corresponding second zoom curved grooves, first, the second guide shaft group 31,41 first, the second straight-line groove group 11, can only go up for 12 li, move down, when cam canister 2 left-right rotation, first, the second guide shaft group 31,41 first, the second zoom curved groove group 21,22 li tracks along with the zoom curved groove move, and first, the second straight- line groove group 11,12 effects down, first, two groups of frames 3,4 do relative on, move down, realize optical zoom function; Described the 3rd group of frames 5 are provided with a pilot hole 51 and a threaded hole 52, pilot hole 51 is positioned on the stationary magazine creel 1 by axle 8, screw rod 711 on threaded hole 52 and the focusing motor 71 matches, when focusing motor 71 rotates, under the effect of screw rod 711, the pilot hole 51 of the 3rd group of frames 5 is positioned on the stationary magazine creel 1 by axle 8, so the 3rd group of frames 5 can only be done upper and lower moving, realizes automatic focus function.

The outside lower end of described cam canister 2 is provided with gear ring 23, described zoom motor 72 also has been provided with the gear set 721 of transmission gear shift effect, make the motor gear 722 that is located on 72 of the zoom motors down by 723 effects of middle transmission gear, by the gear ring 23 on the driven wheel 724 driving cam tubes 2, make cam canister 2 rotate and drive thus first and second group frame 3,4 and do relative upper and lower moving, this gear set 721 has high transmission ratio--and-ratio of gear is up to 24, low noise---noise is lower than 40Db, high-level efficiency--and-efficient reaches 96%.First, second zoom wire casing group 21,22 songs of described cam canister 2 include three equally distributed zoom curved grooves separately, first, second guide shaft group 31,41 of first and second group frame 3,4, also include three equally distributed guide shafts separately, each guide shaft enters in the corresponding zoom curved groove, form a stable drive, the curvilinear guide system of accurate positioning when system's multisection type optical zoom, has guaranteed the optical zoom precision of system.

Autofocus system and optical focal distance setting system that described stationary magazine creel 1, cam canister 2, first, second and third group frame 3,4,5 and groups of motors 7 are formed, this system meets the following conditions: focusing is that 7cm is to infinity from AF; Zooming range (f)=2.8 ∽ 14.4mm.The material of the gear set 721 on the described zoom motor 72 is a plastic cement, and the teeth plastic wheel has the performance of low vibration, realizes stable drive.

The utility model is through reliability test---high temperature and humidity test (80 ℃ of the temperature of series, humidity 95%-), temperature cycling test (circulation is 72 hours between 30 ℃ and 70 ℃), vibration test (frequency 10-50-10Hz, amplitude 2mm, 30 minutes time), fall-down test (1.5 meters eminences are fallen), its system accuracy of actuation test (20,000 times circulation zoom and focusings) is constant, the outward appearance not damaged.

Optical zoom and autofocus system numerical digit camera lens and common numerical digit camera lens contrast such as following table:

Sequence number	The contrast project	Optical focusing system numerical digit camera lens	Common numerical digit camera lens
				1	Pixel	More than 3,000,000 pixels	30-200 ten thousand pixels
2	Illumination	Image planes are evenly whole, the lightness height	Image planes integral body is partially dark
				3	Contrast	Image planes sharpness height, color is clearly demarcated	Sharpness is bad
4	Zoom	3 Zoom Lens	Do not have
				5	Focusing	Miniature stepper motor is focused automatically	Do not have
6	Shooting distance	7cm is to infinity	0.7m-2m distance

Claims (7)

1. An optical focusing and auto-focusing mechanical system, including a fixed barrel (1), a cam barrel (2) and the first, second, and third groups of frames (3), (4), (5) for supporting and positioning And shell (6) and motor group (7), this motor group (7) includes focus motor (71) and zoom motor (72), it is characterized in that: described first, second group frame (3), ( 4) It is arranged in the fixed cylinder (1), and the described cam cylinder (2) is sleeved on the fixed cylinder (1), and the first and second group frames (3), (4) are formed by the cam cylinder (2) and The fixed cylinder (1) is limited and guided, one end of the third group frame (5) is set in the fixed cylinder (1), and the other end is fixedly protruding from the fixed cylinder (1) to connect with the focusing motor (71) and controlled by The focusing motor (71) drives the up and down movement, and the zoom motor (72) drives the cam cylinder (2) to rotate, and the rotation of the cam cylinder (2) drives the first and second group frames (3), (4) to operate. Move up and down relative to each other. 2. An optical focusing and auto-focusing mechanical system according to claim 1, characterized in that: the lower edges of the first and second groups of frames (3), (4) are respectively provided with first and second Two guide shaft groups (31), (41), the first and second zoom curve groove groups (21), (22) are opened on the inner surface of the cam cylinder (2), and the cylinder of the fixed cylinder (1) There are first and second linear groove groups (11), (12) on the wall, and the first guide shaft group (31) of the first group frame (3) passes through the first straight groove group (12) on the fixed cylinder (1). The line groove group (11) enters in the corresponding first zoom curve groove group (21) on the cam cylinder (2), and the second guide shaft group (41) of the second group frame (4) passes through the fixed cylinder ( The second linear groove group (12) on 1) enters in the corresponding second zoom curve groove (22) on the cam cylinder (2). 3. An optical focusing and auto-focusing mechanical system according to claim 1, characterized in that: said third group frame (5) is provided with a positioning hole (51) and a threaded hole (52), positioning The hole (51) is positioned on the fixed cylinder (1) by the shaft (8), and the threaded hole (52) cooperates with the screw rod (711) on the focus motor (71). 4. An optical focusing and auto-focusing mechanical system according to claim 2 or 3, characterized in that: a ring gear (23) is provided at the outer lower end of the cam barrel (2), and the zoom motor ( 72) There is also a gear set (721) that plays the role of transmission and speed change, so that the motor gear (722) on the zoom motor (72) shaft is driven by the drive gear (724) under the action of the transmission gear (723) in the middle. The ring gear (23) on the cam barrel (2) makes the cam barrel (2) rotate and thus drives the first and second group frames (3), (4) to move up and down relatively. 5. An optical focusing and auto-focusing mechanical system according to claim 2 or 3, characterized in that the first and second zoom curve groove groups (21), (22) of the cam barrel (2) are respectively Including three uniformly distributed zoom curve grooves, the first and second guide shaft groups (31), (41) of the first and second group frames (3), (4) also include three uniformly distributed guide shafts , each guide shaft enters the corresponding zoom curve groove. 6. An optical focusing and auto-focusing mechanical system according to claim 1, characterized in that: the fixed cylinder (1), the cam cylinder (2), the first, second and third groups of frames (3), (4), (5) and the motor group (7) form the automatic focus system and the optical zoom system, the system meets the following conditions: the focus distance (AF) is 7cm to infinity; zoom range (f) = 2.8∽14.4mm . 7. The optical focusing and auto-focusing mechanical system according to claim 4, characterized in that the material of the gear set (721) on the zoom motor (72) is plastic.

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