CN203054325U

CN203054325U - Focusing apparatus

Info

Publication number: CN203054325U
Application number: CN 201220698471
Authority: CN
Inventors: 范婧
Original assignee: AAC Acoustic Technologies Suzhou Co Ltd
Current assignee: AAC Optics Suzhou Co Ltd
Priority date: 2012-12-14
Filing date: 2012-12-14
Publication date: 2013-07-10
Anticipated expiration: 2022-12-14

Abstract

The utility model provides a focusing device. The focusing device includes a frame, a lens module accommodated in the frame, an offset sensing module, and an offset adjustment module. The offset adjustment module includes a magnetic steel and a plurality of The offset adjustment coils on the side of the magnetic steel, each offset adjustment coil is fixed on the frame, the offset sensing module senses the offset of the lens module, and feeds back the offset adjustment control signal to The offset adjustment coil of the offset adjustment module, the offset adjustment module receives an offset adjustment control signal and adjusts the relative position of the lens module. The focusing device of the present utility model can realize the automatic anti-shake function when focusing.

Description

Focusing mechanism

Technical field

The utility model relates to a kind of focusing mechanism of automatic anti-trembling function can realize focusing the time.

Background technology

Autofocus system used on the common digital product does not have anti-trembling function usually, as shown in Figure 1, is the three-dimensional decomposition texture synoptic diagram of a kind of automatic focusing mechanism relevant with the utility model.

Described automatic focusing mechanism 1 comprises framework 11, camera lens module 13 and the module 15 of focusing automatically.Described framework 11 has receiving space.Described camera lens module 13 and described automatic focusing module 15 correspondences are housed in the receiving space of described framework 11.

Described automatic focusing module 15 comprises automatic focusing coil 151 and magnet steel 153 compositions.When applying electric current for described automatic focusing coil 151, interact between the magnetic field of the magnetic field that described automatic focusing coil 151 inductions produce and described magnet steel 153 self, corresponding generation reacting force drives described camera lens module 13 and moves along axis direction.

Yet because above-mentioned automatic focusing mechanism does not have anti-trembling function, practicality is not high, and imaging effect is not good.

The utility model content

The technical matters that the utility model mainly solves is that existing focusing mechanism does not have anti-trembling function and imaging effect is not good.

In order to solve the problems of the technologies described above, the utility model embodiment discloses a kind of focusing mechanism, described focusing mechanism comprises the framework of tool receiving space, the lens module, module is adjusted in the corresponding skew sensing module that is electrically connected and skew, described lens module correspondence is housed in the receiving space of described framework, the relative position side-play amount of the described camera lens module of described skew sensing module sensing, and the feedback shift adjustment controls signal to the skew adjustment coil that module is adjusted in described skew, described skew is adjusted module and is received described skew adjustment control signal, adjusts the focusing of described lens module.

In a preferred embodiment of the present utility model, getting plane, described lens module xsect place is the XY plane, then described skew is adjusted coil perpendicular to the setting of described XY plane, and described skew adjustment coil comprises for the X-axis skew of adjusting the directions X side-play amount to be adjusted coil and adjust coil for the Y-axis skew of adjustment Y-direction side-play amount.

In a preferred embodiment of the present utility model, the outside that module is uniformly distributed in described framework is adjusted in described a plurality of skews.

In a preferred embodiment of the present utility model, described skew is adjusted module and is comprised magnet steel and two skew adjustment coils, and described magnet steel is folded between described lens module and the described framework inside surface, and described two skews are adjusted coils and are symmetricly set on described magnet steel side.

In a preferred embodiment of the present utility model, the pole orientation unanimity of the described magnet steel of module is adjusted in described a plurality of skews.

In a preferred embodiment of the present utility model, each skew is adjusted in the module, and the direction of winding that coil is adjusted in described two skews is opposite.

In a preferred embodiment of the present utility model, the side of described framework is provided with a plurality of grooves, and coil corresponding being embedded in the groove of described framework respectively adjusted in described a plurality of skews.

In a preferred embodiment of the present utility model, described focusing mechanism also comprises control circuit board, described control circuit board and the corresponding electrical connection of described skew sensing module.

In a preferred embodiment of the present utility model, described skew sensing module comprises sensing element and sensing support, the described sensing element of described sensing stent support, the corresponding electrical connection with described control circuit board of described sensing element.

In a preferred embodiment of the present utility model, described focusing mechanism also comprises automatic focusing module, described automatic focusing module comprises the suspention line and the unit of focusing automatically, described suspention line suspends described automatic focusing unit in the described framework outside, the corresponding electrical connection with described control circuit board in described automatic focusing unit.

Compared to a kind of focusing mechanism relevant with the utility model, focusing mechanism of the present utility model is adjusted the interaction of coil and described magnet steel by described skew, it is mobile in perpendicular to the plane of place, axle center direction to drive described lens module, automatic anti-shake function in the time of can realizing focusing, interaction by described a plurality of focusing coils and described magnet steel simultaneously, therefore its optical effect is better, has better practicability.

Description of drawings

In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings, wherein:

Fig. 1 is the three-dimensional decomposition texture synoptic diagram of a kind of automatic focusing mechanism relevant with the utility model;

Fig. 2 is the three-dimensional decomposition texture synoptic diagram of the utility model image system one preferred embodiment;

Fig. 3 is the perspective exploded view of focusing mechanism shown in Figure 2;

Fig. 4 is that the module perspective exploded view is adjusted in skew shown in Figure 2;

Fig. 5 is skew sensing module perspective exploded view shown in Figure 2;

Fig. 6 is that the modular structure synoptic diagram is adjusted in the skew of another preferred embodiment of the utility model.

Fig. 7 is that the modular structure synoptic diagram is adjusted in the skew of another preferred embodiment of the utility model.

Embodiment

Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present utility model, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making all other embodiment that obtain under the creative work prerequisite, all belong to the scope of the utility model protection.

The utility model embodiment discloses a kind of focusing mechanism and has used the image system of described focusing mechanism.See also Fig. 2, Fig. 2 is the three-dimensional decomposition texture synoptic diagram of the utility model image system one preferred embodiments.Described image system 2 comprises focusing mechanism 20, shell 21, optical filter 23 and image sensing module 25.

Described shell 21 is housings, it comprises loam cake and lower cover, described loam cake cooperates described lower cover to accommodate described focusing mechanism 20, optical filter 23 and image sensing module 25 in it, and described optical filter 23 is folded between described image sensing module 25 and the described focusing mechanism 20.

Please consulting Fig. 3 again, is the perspective exploded view of focusing mechanism 20 shown in Figure 2.Described focusing mechanism 20 comprises that framework 201, lens module 203, skew sensing module 205, skew adjust module 206, focus module 207 and control circuit board 209 automatically.

Described framework 201 comprises first framework 2011 and second framework 2013, described first framework 2011 and the 2013 butt settings of described second framework, described first framework 2011 is a ring-type flake structure, and every side of described first framework 2011 is provided with two grooves 2015, described second framework 2013 is symmetrical tetrahedral structure, and within it side be provided with perpendicular to described first framework 2011 the four frame walls 2017 that arrange at interval, described frame wall 2017 is symmetrical arranged.

Described lens module 203 comprises lens 2031 and lens barrel 2033, and described lens barrel 2033 is tubular, and described lens barrel 2033 inwalls are stepped, and described lens 2031 are perpendicular to the stair-stepping inwall of described lens barrel 2033.

Described skew sensing module 205 comprises sensing element 2051 and sensing support 2055, described sensing element 2051 is arranged at described control circuit board 209 and is electrically connected mutually with described control circuit board 209, described sensing support 2055 comprises a receiving space, accommodates and supports described sensing element 2051 and described control circuit board 209.

Described automatic focusing module 207 comprises suspention line 2071 and focusing unit 2073 automatically, the described many suspention lines 2071 described automatic focusing unit 2073 that suspends, and described automatic focusing unit 2073 is electrically connected mutually with described control circuit board 209.In the course of work of described image system 2, when 2073 energisings of 209 pairs of described focusings of described control circuit board unit, the interaction of described focusing unit 2073 and described a plurality of magnet steel 2061, described focusing unit 2073 drives described a plurality of magnet steel 2061 and moves along axis direction, thereby can realize automatic focus function.

Please consult Fig. 4 and Fig. 5 more simultaneously, wherein Fig. 4 is skew sensing module 205 three-dimensional assembling synoptic diagram shown in Figure 3, and Fig. 5 is the solid assembling synoptic diagram that module 206 is adjusted in skew shown in Figure 3.

Described skew is adjusted module 206 and is comprised magnet steel 2061 and skew adjustment coil 2063, and described magnet steel 2061 both sides respectively arrange a described skew and adjust coil 2063, and described relatively magnet steel 2061 is symmetrical arranged.The direction of winding that coil 2063 is adjusted in wherein said two skews is opposite, and described skew is adjusted coil 2063 and is electrically connected mutually with described control circuit board 209.The magnet steel 2061 direction unanimities of module 206 are adjusted in each skew.When described skew sensing module 205 senses described lens module 203 when moving along the direction that is orthogonal to the axle center, the relative position side-play amount of the described skew sensing module described skew sensing module sensing 205 of 205 transmission and described camera lens module 203 is to described control circuit board 209, described control circuit board 209 receives this signal and the adjustment of corresponding generation feedback shift controls signal to described skew adjustment coil 2063, described magnet steel 2061 is subjected to electromagnetic force makes described lens module 203 move the relative position of adjusting described lens module 203 along being orthogonal to axis direction, thereby realizes anti-trembling function.And, departing from the difference of the position of described axis direction according to described lens module 203, described sensing module 205 can also be controlled single or multiple described skews adjustment modules 205 are carried out FEEDBACK CONTROL.

In the present embodiment, getting plane, described lens module 203 xsect place is the XY plane, and described X-axis and plane, Y-axis place are perpendicular to described axle center, and namely the Z axle arranges.Described four skews are adjusted module 206 and are arranged at described X-direction and Y direction respectively in twos.Wherein to adjust coil be that coil is adjusted in the X-axis skew in the skew of adjusting modules 206 along two skews of X-direction setting, and adjusting coil along the skew of Y direction is that coil is adjusted in the Y-axis skew.Described lens module 203 side-play amounts that coil is adjusted at X-direction are adjusted in described X-axis skew, described lens module 203 side-play amounts that coil is adjusted at Y direction are adjusted in described Y-axis skew, adjust coil and the acting in conjunction of Y-axis skew adjustment coil by described X-axis skew, effectively adjust the side-play amount of described lens module 203 in the XY plane, effectively compensate the skew that brings because of the shake in the XY plane, improve focusing effect, improve optical effect.

Please consult Fig. 6 again, wherein Fig. 6 is that the modular structure synoptic diagram is adjusted in the skew of the image system that discloses of the another kind of preferred embodiments of the utility model.It is two that module 306 is adjusted in described skew, is symmetricly set on two opposite sides of described lens module 303.X-axis in described skew adjustment module 306 along the plane at described lens 3031 places or Y direction are provided with two symmetrically arranged skews and adjust modules 306, when producing shake on the described relatively two skew adjustment module 306 place X-axis of described lens module 303 or the Y direction, described skew sensing module feedback signal is to described control circuit board, described control circuit board receives signal and produces and controls signal to described skew and adjust module 306, drives described lens module 303 and moves and realize anti-trembling function along being orthogonal to axis direction thereby described magnet steel 3061 is subjected to electromagnetic force.

Please consult Fig. 7 again, wherein Fig. 7 is that the modular structure synoptic diagram is adjusted in the skew of the image system that discloses of another preferred embodiments of the utility model.It is three that module 406 is adjusted in described skew, be uniformly set at described lens module 403 peripheries, overlook in the direction that is parallel to optical axis, the 120 degree angle settings that are of module 406 are adjusted in described skew, described skew is adjusted module 406 matrix distribution in the periphery of described lens module 403, getting plane, described lens module 403 xsect place is the XY plane, when described lens module 403 intersects at the generation shake of described XY plane, described sensing module feedback signal is to described control circuit board, described control circuit board receives signal and module 406 is adjusted in described skew and drives control, described a plurality of magnet steel 4061 is subjected to electromagnetic force and produces one making a concerted effort, described direction of making a concerted effort is opposite with jitter direction, moves the realization anti-trembling function thereby drive described lens module 403 along being orthogonal to axis direction.

The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to do; or directly or indirectly be used in other relevant technical field, all in like manner be included in the scope of patent protection of the present utility model.

Claims

1. A focusing device, comprising:

frame, including containment space;

The lens module is correspondingly accommodated in the accommodation space of the frame body, and it is characterized in that: the focusing device also includes an offset sensing module and an offset adjustment module correspondingly electrically connected, and the offset sensing module The group senses the relative position offset of the lens module, and feeds back the offset adjustment control signal to the offset adjustment coil of the offset adjustment module, and the offset adjustment module receives the offset adjustment control signal to adjust the focus of the lens module.

2. The focusing device according to claim 1, wherein the plane where the cross-section of the lens module is located is the XY plane, the offset adjustment coil is arranged perpendicular to the XY plane, and the offset adjustment coil The coils include an X-axis offset adjustment coil for adjusting the X-direction offset and a Y-axis offset adjustment coil for adjusting the Y-direction offset.

3 . The focusing device according to claim 1 , wherein the plurality of offset adjustment modules are evenly distributed outside the frame. 4 .

4. The focusing device according to claim 1, wherein the offset adjustment module includes a magnet and two offset adjustment coils, and the magnet is sandwiched between the lens module and the frame Between the surfaces, the two offset adjustment coils are arranged symmetrically on the sides of the magnetic steel.

5 . The focusing device according to claim 4 , wherein the magnetic pole directions of the magnets of the plurality of offset adjustment modules are consistent.

6. The focusing device according to claim 5, wherein in each offset adjustment module, the winding directions of the two offset adjustment coils are opposite.

7. The focusing device according to claim 4, wherein a plurality of grooves are provided on the side of the frame body, and the plurality of offset adjustment coils are correspondingly embedded in the grooves of the frame body .

8 . The focusing device according to claim 1 , further comprising a control circuit board, and the control circuit board is electrically connected to the offset sensing module correspondingly.

9. The focusing device according to claim 8, wherein the offset sensing module comprises a sensing element and a sensing bracket, the sensing bracket supports the sensing element, and the sensing element Corresponding electrical connection with the control circuit board.

10. The focusing device according to claim 9, characterized in that, the focusing device further comprises an auto-focus module, the auto-focus module includes a suspension wire and an auto-focus unit, and the suspension wire suspends the autofocus unit. The focusing unit is located outside the frame, and the auto-focusing unit is electrically connected to the control circuit board.