CN201007772Y

CN201007772Y - Lens focusing driven dynamic response time inhabitation structure

Info

Publication number: CN201007772Y
Application number: CNU2007200026948U
Authority: CN
Inventors: 吴富源; 范肇婷
Original assignee: TDK Taiwan Corp
Current assignee: TDK Taiwan Corp
Priority date: 2007-01-26
Filing date: 2007-01-26
Publication date: 2008-01-16
Anticipated expiration: 2017-01-26

Abstract

The utility model discloses a dynamic response time inhibition structure which is driven by a lens focusing device, which comprises a movable mechanism, an immovable mechanism and at least a shock absorption assembly, wherein the movable mechanism at least comprises a base of which the center is arranged with a lens, and a coil is coated around the base. The immovable mechanism at least comprises a frame, a front cover and a bottom cover. A plurality of magnetic assemblies is embedded around the frame, and the movable mechanism is contained in the center of the frame. The shock absorption assembly connected between the movable mechanism and the immovable mechanism is used to absorb the jitter which is produced when the movable mechanism focusing moves to a location, thereby the dynamic response time which the movable mechanism realizes the stable state is inhibited.

Description

The camera lens focusing Driven Dynamic response time is suppressed structure

Technical field

The utility model relates to a kind of camera lens focusing Driven Dynamic response time (Response Time) and suppresses structure, but particularly relate to the response time that a kind of restraining camera lens focusing drives, reduce the camera lens focusing and move the shake that is produced, and reach the structure of stable state fast.

Background technology

Progress along with science and technology, it is considerably little to make that the volume of digital camera contracts, and present mobile phone also mostly has the function of digital camera, these all give the credit to the modularization and the microminiaturization of pick-up lens, and the automatic focusing drives structure of numerous species is arranged in micro-lens, that the most generally be used at present is voice coil motor (VCM), and volume is little, power consumption is few, activate displacement accurately reaches advantages such as cheap because of it has, and the short distance that is suitable as the automatic focusing of micro-lens drives.

As shown in Figure 1, perspective exploded view for known camera lens focusing drives structure, the drives structure of wherein focusing includes a loam cake 10, a lower bottom cover 11 and an outside framework 12, enclose all round in this outside framework 12 and embed four magnet 13 respectively, be provided with screw thread in one lens bracket 14, can screw in and support a camera lens 15, these lens bracket 14 peripheries are embedded with a coil 16, and these lens bracket 14 movable four magnet, 13 centers in this outside framework 12, and produce by 16 energisings of this coil that polarity of the magnetic fields repel each other with this four magnet 13 or suction mutually, drive the displacement of focusing of this lens bracket 14, and this lens bracket 14 is supported on the center of this four magnet 13 by each shell fragment 17 up and down.When these coil 16 galvanizations, this coil 16 moves to till the location and borrow this shell fragment 17 to promote these lens brackets 14 from the bottom up because of current field effect and this magnet 13 generation thrusts.

Yet, as long as camera lens has the function of automatic focusing, the capital stops to produce when mobile shake because of focusing moves to the location, slowly reach stable state afterwards again, this section stops the required time from static moving to, and is called dynamic response time (Response Time), as shown in Figure 2, be the dynamic response waveform synoptic diagram that detects known focusing drives structure, needed 1.34035 seconds just can reach stable state as seen from Figure 2, the time is quite long.

Because this section dynamic response time can influence the time length of camera lens module focusing, quality for camera lens module has very big influence, especially can influence focusing required time length, dynamic response time is long more, the required focusing time is long more, so dynamic response time must be shortened, could effectively improve the required time of focusing, and not have any document or technology of improving this dynamic response time at present.

Summary of the invention

The purpose of this utility model is to provide a kind of camera lens focusing Driven Dynamic response time to suppress structure, can absorb camera lens focusing drives structure because of moving to the location, stop the shake that produces when mobile, to suppress dynamic response time (Response Time), promote quality, and reach the purpose of power saving and lifting usefulness.

To achieve these goals, the utility model provides a kind of camera lens focusing Driven Dynamic response time to suppress structure, comprise a movable agency, not movable agency and at least one shock-absorbing assembly, wherein this movable agency comprises a pedestal at least, a camera lens can be installed in the pedestal center, coats a coil around the pedestal; This not movable agency comprise a framework, a protecgulum and a bottom at least; Be embedded several magnet assemblies, ccontaining this movable agency in center around this framework; This shock-absorbing assembly is connected in this movable agency and this is not between the movable agency, in order to absorb the shake that is produced when this movable agency focusing is moved to the location, to suppress the dynamic response time of this movable agency to stable state.

To achieve these goals, the utility model provides the above-mentioned camera lens focusing Driven Dynamic response time to suppress structure, wherein also comprise at least one elastic parts, be provided with movable part and not movable portion, this movable part connects this movable agency, this not movable portion connects this not movable agency, and this shock-absorbing assembly is connected in the movable part of this elastic parts and this is not between the movable agency, in order to absorb the shake that is produced when this movable agency focusing is moved to the location, to suppress the dynamic response time of this movable agency to stable state.

From the above mentioned, by enforcement of the present utility model, can absorb the running fix of camera lens focusing drives structure really, stop the shake to be produced when mobile, thereby suppress dynamic response time (Response Time), promote the camera lens quality, and reach the purpose of power saving and lifting usefulness.

Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to qualification of the present utility model.

Description of drawings

Fig. 1 is the perspective exploded view of known camera lens focusing drives structure;

Fig. 2 is for detecting the dynamic response waveform synoptic diagram of known focusing drives structure;

Fig. 3 is the three-dimensional exploded view of the utility model camera lens focusing drives structure;

Fig. 4 is bottom side stereographic map (camera lens omission) and local enlarged diagram after Fig. 3 combination;

Fig. 5 A, Fig. 5 B use the duty diagrammatic cross-section of shock-absorbing assembly for the utility model camera lens focusing drives structure; And

Fig. 6 is for detecting the dynamic response waveform synoptic diagram after the utility model uses the shock-absorbing assembly.

Wherein, Reference numeral:

10 loam cakes

11 lower bottom covers

12 outside frameworks

13 4 magnet

14 lens brackets

15 camera lenses

16 coils

17 shell fragments

20 focusing drives structure

21 pedestals

23 magnetic portions

24 frameworks

25 protecgulums

26 bottoms

27 housings

28 elastic partss

30 coils

31 camera lenses

50 movable agencies

60 movable agencies not

61 ccontaining notches

62 shock-absorbing assemblies

Embodiment

The utility model is primarily aimed at the dynamic response time (Response Time) when suppressing the camera lens focusing, therefore illustrate as embodiment with camera lens focusing drives structure, as Fig. 3, it is the three-dimensional exploded view of camera lens focusing drives structure, and Fig. 4 A is the bottom isometric view (camera lens omission) of Fig. 3, Fig. 4 B is the local enlarged diagram of Fig. 4 A, and this camera lens focusing drives structure 20 comprises a pedestal 21, several magnetic portions 23, a framework 24, a protecgulum 25, a bottom 26, a housing 27 and several elastic partss 28.Wherein this pedestal 21 has a coil 30 and a camera lens 31, this pedestal 21 is arranged on the center of

framework

24,31 centers that are installed in pedestal 21 of this camera lens, this coil 30 is coated on around the pedestal 21, this magnetic portion 23 be arranged at this framework 24 around on, make its periphery that is positioned at coil 30 just, and keep one section fixed range that can make the electric field generating effect.

Wherein this elastic parts 28 belongs to conductive material, and it is arranged between framework 24 and the bottom 26, and between framework 24 and the protecgulum 25, and this housing 27 coats above-mentioned all members, but camera lens 31 can expose according to situation.

With reference to figure 4A, Fig. 4 B, this pedestal 21 is to belong to movable agency 50 in the utility model, and remaining component all belongs to not movable agency 60, the utility model movable agency 50 and not 60 of movable agencies offer at least one ccontaining notch 61, and in this ccontaining notch 61, insert at least one shock-absorbing assembly 62, this shock-absorbing assembly 62 is connected in this movable agency 50 and not between the movable agency 60, in order to absorb the shake that is produced when this movable agency 50 is moved to the location, to suppress this dynamic response time.

Shown in the embodiment and Fig. 5 A, Fig. 5 B of Fig. 4 A, Fig. 4 B, use the duty diagrammatic cross-section of shock-absorbing assembly for the utility model camera lens focusing drives structure, one end of this shock-absorbing assembly 62 is attached to this bottom 26, the other end is attached to the downside of this pedestal 21, and this shock-absorbing assembly 62 can be able to suppress shock material of soft gel, soft spring or soft rubber or the like or member.Remove in addition, the utility model also can be connected in shock-absorbing assembly 62 between protecgulum 25 and the pedestal 21, perhaps between framework 24 and the pedestal 21,, also this shock-absorbing assembly 62 can be set between protecgulum 25, bottom 26 and framework 24 and pedestal 21 as long as avoid the installing posting port of camera lens 31.

In addition, because being provided with movable part, elastic parts 28 connects pedestal 21, and not movable portion is connected in protecgulum 25 or bottom 26, therefore the utility model also can be connected in this shock-absorbing assembly 62 between the not movable agency 60 of this elastic parts 28 and protecgulum 25 or bottom 26, so all can absorb the shake that is produced when pedestal 21 is moved to the location, to suppress this dynamic response time by shock-absorbing assembly 62.

As shown in Figure 6, for detecting the dynamic response waveform synoptic diagram after the utility model uses the shock-absorbing assembly.After the utility model adds shock-absorbing assembly 62 as can be seen from Figure, this pedestal 21 directly reaches stable state when being moved to the location, there is not dynamic response time fully, thereby can quite effectively suppress dynamic response time, and after the utility model adds shock-absorbing assembly 62, impact in the product reliability test and vibratory test also there are the effect of shock-absorbing buffering, make the reliability of product better.

Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.

Claims

1. a camera lens focusing Driven Dynamic response time is suppressed structure, it is characterized in that, comprising:

One movable agency comprises a pedestal at least, and a camera lens can be installed in the pedestal center, coats a coil around the pedestal;

One movable agency not comprises at least, and a framework is embedded several magnet assemblies all around, ccontaining this movable agency in center; One protecgulum; One bottom;

At least one in order to absorb the shake that is produced when the focusing of this movable agency is moved to the location, to suppress the shock-absorbing assembly of this movable agency, be connected in this movable agency and this is not between the movable agency to the dynamic response time of stable state.

2. dynamic response time according to claim 1 suppresses structure, it is characterized in that, at this movable agency and also do not offer a ccontaining notch in order to ccontaining this shock-absorbing assembly between the movable agency.

3. dynamic response time according to claim 2 suppresses structure, it is characterized in that this ccontaining notch can be arranged on protecgulum or the bottom.

4. dynamic response time according to claim 1 suppresses structure, it is characterized in that this shock-absorbing assembly can be soft gel, soft spring or soft rubbermeter.

5. dynamic response time according to claim 1 suppresses structure, it is characterized in that, also comprises:

At least one elastic parts is provided with movable part and not movable portion, and this movable part connects this movable agency, and this not movable portion connects this not movable agency, and this shock-absorbing assembly is connected in the movable part of this elastic parts and this is not between the movable agency.