CN201145761Y

CN201145761Y - Cam module group of automatic focusing handset

Info

Publication number: CN201145761Y
Application number: CNU2007201967775U
Authority: CN
Inventors: 鲁大鹏; 李守鑫
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2007-12-29
Filing date: 2007-12-29
Publication date: 2008-11-05
Anticipated expiration: 2017-12-29

Abstract

The utility model relates to an automatic focusing mobile phone camera module, which comprises a base, a lens, and a lens mount. The base is provided with a cavity which can receive the lens and the lens mount, and the lens and the lens mount adopt the threaded connection, wherein, the base is fixed with a coil which can produce a magnetic field by electrifying; a magnetic element is fixed outside the lens mount, and the lens can slide along the focus changing direction of the lens relative to the base under the mutual action of the magnetic fields produced by the coil and the magnetic element, and can be positioned. The magnetic element is directly fixed with the lens mount, which avoids the magnetic element from being usually fixed on an iron core, simplifies a mobile phone camera module structure, and reduces cost.

Description

A kind of automatic focusing mobile phone cam module

Technical field

The utility model relates to a kind of mobile phone cam module, relates in particular to a kind of mobile phone cam module of automatic focusing.

Background technology

Along with the development of technology, mobile phone has become requisite portable electric appts in people's daily life, and the mobile phone with camera function becomes the main flow industry especially.In existing camera mobile phone, overwhelming majority pick-up lens module adopts in-built CCD chip or built-in CMOS chip, only has the shoot function of focusing, the sharpness of pictures taken can only guarantee within some scopes, exceed this scope, picture will be smudgy, and this does not satisfy modern's demand far away.Therefore, having automatically, the mobile phone of focus function becomes a kind of needs.

The utility model content

The technical problems to be solved in the utility model provides a kind of mobile phone cam module of automatic focusing of dependable performance.

For solving the problems of the technologies described above, the mobile phone cam module of a kind of automatic focusing of the utility model comprises base, camera lens, lens mount, and this base forms can ccontaining this camera lens and the cavity of lens mount, and this camera lens and lens mount adopt and be threaded; Wherein, described base is provided with and is fixed with the coil that energising can produce magnetic field on the described base; This lens mount is fixed with magnetic element, and this camera lens can also can be located along described lens focus change direction slip by relative this base under the magnetic field interaction of magnetic field that this coil produces and this magnetic element.

The utility model utilizes electromagnetic principle, and by energising makes it produce magnetic field to the loop construction on the firm banking, the magnetic element that is fixed on the lens mount produces corresponding magnetic force, makes lens mount drive camera lens and moves along optical axis direction.Magnetic element directly is fixed on the lens mount, has avoided commonly used magnet is fixed on the iron core, has simplified the structure of module, has alleviated the weight of mobile phone cam module, has reduced cost.

The utility model also comprises flexible member, and flexible member is out of shape generation elastic force in the moving process of camera lens.Camera lens is finished automatic focusing under the interaction of elastic force and magnetic force.The relevant position of lens mount of the present utility model and dustproof sheet is provided with guide frame, guaranteed camera lens when zooming direction moves and the image sensor chip of mobile phone module in same in the heart.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is further described.

Fig. 1 is a structure exploded perspective view of the present utility model.

Fig. 2 is the structural representation of original state of the present utility model.

Fig. 3 is the structural representation of focusing of the present utility model.

The main element explanation

1, base 2, camera lens 3, lens mount

4, coil 5, dustproof sheet 6, flexible member

7, magnetic element 10, through hole 11, Connection Block

12, intermediate supports shell 13, end closed housing 16, containing cavity

17, coil standing groove 18, wire casing 19, groove lid

21, eyeglass 22, rotating cylinder 30, guide frame

50, gathering sill

Embodiment

As shown in Figure 1 to Figure 3, the utility model comprises base 1, camera lens 2, lens mount 3, coil 4, dustproof sheet 5, flexible member 6, magnetic element 7.

This camera lens 2 comprises eyeglass 21, fixes the rotating cylinder 22 of this eyeglass 21; This eyeglass 21 is fixed in the rotating cylinder 22, and rotating cylinder 22 has external thread structure;

This lens mount 3 is the bigger cascade ring shape of radial dimension at middle part, is provided with the guide frame 30 of four symmetrical distributions at maximum gauge annular place, and the inwall of lens mount 3 is a female thread structure, and described rotating cylinder 22 and lens mount 3 are by being threaded.

Described base 1 comprises the Connection Block 11 that can be connected on the mobile phone main body, be fixed on the intermediate supports shell 12 on this Connection Block 11 and be fixed on end closed housing 13 on this intermediate supports shell 12; The end of this end closed housing 13 is formed with the through hole 10 that can stretch out for the less end of wherein radial dimension of the lens mount 3 of described camera lens 2, and the ladder of this lens mount 3 can block only on this through hole 10; But be fixed with the dustproof sheet 5 of blocks dust on the inwall of this end closed housing 13, be formed with four gathering sills 50 that the symmetrical focal length variations direction along camera lens 2 is extended on this dustproof sheet 5, these four gathering sills 50 are corresponding with four guide frames 30 on the lens mount 3, guarantee camera lens 2 relative these bases 1 when the focal length variations direction is slided, these camera lens 2 maintenances are concentric with the photoreceptor of camera; This dustproof sheet 5, intermediate supports shell 12 and Connection Block 11 surround can ccontaining described camera lens 2 containing cavity 16; Offer on the described Connection Block 11 for the wire casing 18 of drawing described coil 4 wiring, be formed with the groove lid 19 that can cover this wire casing 18 on the described intermediate supports shell 12.

On the end face that is positioned at described containing cavity 16 bottoms on the described Connection Block 11, be formed with coil standing groove 17, and adopt the fastening mode of the mode of viscose glue or cutting ferrule that one end of coil 4 is fixed in this coil standing groove 17, the other end of coil 4 is unsettled, and this coil 4 can produce magnetic field under "on" position; Coil 4 links to each other by the control circuit electricity that is placed on the printed-wiring board (PWB) circuit on lead and the mobile phone in the wire casing 18, is powered to this coil 4 by the printed-wiring board (PWB) circuit.

The middle part of magnetic element 7 and flexible member 6 all offers consistent reach through hole; Flexible member 6 is shell fragment and/or spring and/or other rubber-like element, and magnetic element 7 is ring texturees, and self has magnetic; Flexible member 6 is fixed on end closed housing 13 and the position that intermediate supports shell 12 is connected, and is fixed on the end of another radial dimension of lens mount 3; Wherein, magnetic element 7 medial surfaces are fixed on described lens mount 3 lateral surfaces, and fixed form can adopt this area mode commonly used, and for example: glue is bonding etc.

In the original state that coil 4 is not switched on, this flexible member 6 is in the state of not stressing, and coil 4 a unsettled end and magnetic elements 7 contact; In auto-focus process, coil 4 produces magnetic field by the printed-wiring board (PWB) circuit supply, repelling each other with the magnetic field that magnetic element 7 is produced in the magnetic field that coil produces, promotes lens mount 3 drive eyeglasses 21 with this and slide with one heart along the photoreceptor of focal length variations direction and camera.

See also Fig. 2 and Fig. 3, the utility model is the course of action of focusing automatically:

The thrust of repelling each other and produced in the magnetic field that magnetic field that coil 4 produces after by the printed-wiring board (PWB) circuit supply and magnetic element 7 are produced, can the controls lens seat 3 drive eyeglasses 21 and slide with one heart along the photoreceptor of focal length variations direction and camera, the size of the voltage of regulating winding 4 in the process that moves, displacement that can controls lens seat 3 also is positioned at the suitable position of focal length.Under the elastic force interaction of thrust that coil 4 and magnetic element 7 are produced and flexible member 6, the guide frame 30 on the dependence lens mount 3 and the guide effect of the gathering sill 50 on the dustproof sheet 5, avoided eyeglass 21 in moving process, to produce eccentric and vibration, finished automatic focusing with the photoreceptor of camera.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims

1, a kind of automatic focusing mobile phone cam module comprises base, camera lens, lens mount, and this base forms can ccontaining this camera lens and the cavity of lens mount, and this camera lens and lens mount adopt and be threaded; It is characterized in that: described base is provided with and is fixed with the coil that energising can produce magnetic field on the described base; This lens mount outside is fixed with magnetic element, and this camera lens can also can be located along described lens focus change direction slip by relative this base under the magnetic field interaction of magnetic field that this coil produces and this magnetic element.

2. mobile phone cam module according to claim 1 is characterized in that: described camera lens comprises eyeglass, fixes the rotating cylinder of this eyeglass; Described rotating cylinder is fixed on the described lens mount.

3, mobile phone cam module according to claim 2, it is characterized in that: be formed with the gathering sill that extends along the camera lens zooming direction on the inwall of described base, form on the described camera lens with can with the corresponding guiding mechanism of gathering sill, this camera lens is slided with respect to base.

4, mobile phone cam module according to claim 2 is characterized in that: also comprise at least one flexible member, an end of this flexible member is fixed on the described camera lens, and the other end is fixed on the described base; In described coil "on" position not, this flexible member is in the state of not stressing.

5. according to claim 3 or 4 described mobile phone cam modules, it is characterized in that: described base comprises the Connection Block that can be connected on the mobile phone main body, be fixed on the intermediate supports shell on this Connection Block and be fixed on end closed housing on this intermediate supports shell; The end of this end closed housing is formed with the through hole that can supply described camera lens to stretch out, but is fixed with the dustproof sheet of blocks dust on the inwall of this end closed housing, and this dustproof sheet, intermediate supports shell and Connection Block surround described containing cavity.