CN103513493A - Optical hand-shake prevention driving structure - Google Patents

Abstract

The invention provides an optical hand-shake prevention driving structure which comprises a base, a sliding platform, a driving device and a limiting device. At least two guide rods are arranged on the base, and are arranged on the same plane on the base, the sliding platform is hung on the guide rods, and is provided with a lens, the lens is opposite to a light-pervious hole in the base, the driving device is arranged on the base to drive the sliding platform to shift, and the limiting device is arranged on the base to limit the shift range of the sliding platform. The guide rods are arranged on the same plane, the lens of the sliding platform is guided to carry out optical deviation compensation, the driving structure is simplified, thickness is reduced, and assembling is more convenient.

Description

Optical anti-shake drives structure

Technical field

The present invention relates to a kind of optical anti-shake drives structure, espespecially a kind of optical anti-shake drives structure of carrying out optical compensation with in one plane displacement of the lens on single sliding platform.

Background technology

The image-taking device such as camera, video camera produces the vibrations that blooming mainly comes from hand-held when pick-up image, for solving the mode of hand shake, has a kind of mode of utilizing the lens in mobile camera optics path to carry out light shaft offset compensation at present.This mode need to have a drives structure to order about described lens to move, and is to reach the effect of compensation along the in-plane displancement perpendicular to camera lens optical axis (Z axis).Therefore, described drives structure has two axial sliding platforms conventionally, described lens is arranged on one of them sliding platform, more described two sliding platforms are coincided together, then by drive unit separately, orders about described sliding platform displacement and operates.Described drives structure is owing to comprising two groups of plane drive member, and by causing, the thickness of structure is higher, is unfavorable for the energy-saving design that product is light, thin, short, little.In addition, described drives structure member is many, coordinates the cumulative limit producing to increase, thereby can reduce the precision of controlling displacement between each member, can cause the inconvenience in assembling simultaneously.Yet the anti-hand shake function of image-taking device has become one of outfit of main flow, the acquisition demand of corresponding high capture quality how, described drives structure should continue to be improved again.

Summary of the invention

In view of this, be necessary to provide a kind of optical anti-shake drives structure that can make structure thickness reduction be convenient to again assembling.

The invention provides a kind of optical anti-shake drives structure, it comprises a pedestal, a sliding platform, a drive unit and a restraint device.At least two guide rods are set on described pedestal, the same plane layout of described guide rod on pedestal, on described guide rod, hang described sliding platform, described sliding platform has lens setting, the light hole that described lens have with described pedestal is relative, described drive unit is arranged on described pedestal and drives described sliding platform displacement, and described restraint device is positioned at the scope that limits described sliding platform displacement on described pedestal.

Compare prior art, optical anti-shake drives structure of the present invention, by the described guide rod at same plane layout on described pedestal, hang described sliding platform, thereby use single described sliding platform just can drive described lens to coordinate the demand of optical compensation, described drive unit and described restraint device all can be arranged on described pedestal, effectively simplify the member of drives structure, reach reduction thickness and good practical usefulness easy to assembly.

Accompanying drawing explanation

Fig. 1 is the embodiment schematic diagram of optical anti-shake drives structure of the present invention.

Fig. 2 is the schematic diagram at another visual angle of the optical anti-shake drives structure of Fig. 1.

Fig. 3 is the schematic diagram that the sliding platform of the optical anti-shake drives structure of Fig. 1 starts from pedestal.

Main element symbol description

Drives structure	10
		Pedestal	12
Light hole	122
		Guide rod	124
Bearing seat	126
		Space	120
Sliding platform	14
		Hole	142
The first plane	144
		The second plane	146
Hook	1462
		Spacing	1460
Drive unit	16
		Coil	162
Magnet	164
		Hall sensor	166
Restraint device	18
		Reference column	182
Pilot hole	184

Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.

Embodiment

Below in conjunction with accompanying drawing, the present invention being done to one specifically introduces.

Referring to Fig. 1, is the embodiment schematic diagram of optical anti-shake drives structure of the present invention.Described drives structure 10, it comprises a pedestal 12, sliding platform 14, drive unit 16 and a restraint device 18.The middle position of described pedestal 12 has a light hole 122, and described light hole 122 runs through described pedestal 12, allows that light enters or penetrate described light hole 122.When described pedestal 12 is arranged between camera lens and image sensor (not indicating in figure), the hole that described light hole 122 passes through for camera lens optical axis.At least two guide rods 124 are set on described pedestal 12, the same plane layout of described guide rod 124 on described pedestal 12, the plane at described guide rod 124 places is mutually vertical with the light that described light hole 122 passes through.In present embodiment, two guide rods 124 are set on described pedestal 12, described two guide rods 124 lay respectively at two axial locations of same plane.Described two guide rods 124 arrange by the bearing seat 126 having on described pedestal 12, and described bearing seat 126, in the two end supports of described guide rod 124, all maintains in same plane described guide rod 124.Described guide rod 124 is supported and is positioned on the surface of described pedestal 12 by described bearing seat 126, makes to have Yi Ge space 120 between described guide rod 124 and described pedestal 12 surfaces, and described space 120 highly allows that described sliding platform 14 arranges.On described sliding platform 14, there is a hole 142, in described hole 142, having lens (not indicating in figure) arranges, described hole 142 is relative with the described light hole 122 of described pedestal 12, and the light that described light hole 122 passes through can be projected via the lens in described hole 142.

Described sliding platform 14 includes first plane 144 and second plane 146, and described the first plane 144 is towards the surface of described pedestal 12, and described the second plane 146 is positioned at the described first plane 144 back side.In described the second plane 146, relatively described guide rod 124 position has at least three hooks 1462 settings, described hook 1462 is upright in described the second plane 146, between the hook end of described hook 1462 and described the second plane 146, have a spacing 1460, the width of described spacing 1460 allows that described guide rod 124 arranges.Described hook 1462 respectively hooks, on described guide rod 124, hangs on the surface of described pedestal 12 (as shown in Figure 2) described sliding platform 14.Described hook 1462 is along described guide rod 124 slippages, make described sliding platform 14 can the same plane on described pedestal 12 carry out different directions and move, thereby the described hole 142 interior lens relative with described light hole 122 can be done the adjustment of relative position.In other words, the lens of described hole 142 interior settings are along with the adjustment of described sliding platform 14 positions, can guide the adjustment of light that described light hole 122 penetrates light shaft offset while carrying out hand shake.The hook end of described hook 1462 is dihedral cylinder, and locate hooking on the cylinder body of rod of described guide rod 124 with the angle that connects of described dihedral cylinder, can reduce the friction of surface of contact between described hook 1462 and described guide rod 124, make the slippage of described sliding platform 14 more smooth and easy.In present embodiment, the hook end of described hook 1462 is triangle prism, and connects angle hooking on described guide rod 124 with one of them.

The slippage of described sliding platform 14 is to be driven by described drive unit 16, and described drive unit 16 is arranged on described pedestal 12, and between described pedestal 12 surfaces and described first plane 144 of described sliding platform 14.Described drive unit 16 comprises at least two coils 162, at least two magnet 164 and at least two hall sensors (Hall sensor) 166, it is upper that described coil 162 and described hall sensor 166 are arranged at described pedestal 12 surfaces, and described magnet 164 is arranged in described the first plane 144 (as shown in Figure 3).When described sliding platform 14 hangs on described guide rod 124, described the first plane 144 is relative with described pedestal 12 surfaces, and 164 of described magnet are relative with described coil 162 and described hall sensor 166.Described magnet 164 is relative with described coil 162, produces the strength of driving by magnetic action therebetween, and described driving force acts on described sliding platform 14 and makes it produce the running of displacement.Described magnet 164 is relative with described hall sensor 166, described hall sensor 166 by the sensing of described magnet 164 magnetic flux to detect the displacement of described sliding platform 14.Described hall sensor 166 is by the displacement of described sliding platform 14, the control disposal system that is fed back to anti-hand shake (does not indicate in figure, that it will not go into details for conventional devices), make described control disposal system can effectively adjust the adjustment of described sliding platform 14 the above lens on light axle offset.

In present embodiment, described two guide rods 124 that described drive unit 16 correspondences arrange on described pedestal 12 surfaces, use two coils 162, two magnet 164 and two hall sensors 166.The relatively described guide rod 124 of a described coil 162, a described magnet 164 and a described hall sensor 166 arranges, make described two guide rods 124 there is separately axial driven unit, to drive the slippage under the guiding of described two guide rods 124 of described sliding platform 14.The displacement of described sliding platform 14 optical axis deviation that mainly hand-held vibrations produce when taking image, therefore need in causing the scope of optical axis deviation, described hand-held vibrations control the displacement of described sliding platform 14, if exceed sliding platform 14 described in this scope, cannot be controlled and be lost efficacy, so described sliding platform 14 needs described restraint device 18 to limit the scope of its displacement in the scope of hand-held inclined to one side shake.Described restraint device 18 comprises a reference column 182 and a pilot hole 184.Described reference column 182 is arranged on the surface of described pedestal 12, and described pilot hole 184 is arranged on described sliding platform 14, and described reference column 182 is positioned at described pilot hole 184.When described sliding platform 14 hangs on described guide rod 124, described reference column 182 is fixed in the lip-deep position of described pedestal 12, described sliding platform 14 will be limited in the scope intrinsic displacement of hole by described pilot hole 184, produce the restriction to described sliding platform 14 displacement activity scopes.The relatively described guide rod of shape 124 positions of described pilot hole 184 holes shaping (as shown in Figure 1) is set, effectively to limit the displacement range of described sliding platform 14.In present embodiment, it is rectangle that the position that described two guide rods 124 arrange makes the void shape of described pilot hole 184.

Optical anti-shake drives structure of the present invention, described guide rod 124 with same plane layout on described pedestal 12 hangs described sliding platform 14, and at described pedestal 12, described drive unit 16 and described restraint device 18 are set, can drive and limit described sliding platform 14 at the scope intrinsic displacement of hand-held vibrations, the light shaft offset causing with opponent's shake is adjusted.Described drives structure is used member simplification, reducing thickness, is made assembling easily, and the cumulative limit that can reduce again manufacture has preferably effective utilization.

In addition, those skilled in the art also can do other and change in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention, within all should being included in the present invention's scope required for protection.

Claims (14)

1. An optical anti-hand shake driving structure, which comprises a base, a sliding platform, a driving device and a limiting device, at least two guide rods are set on the base, and the guide rods are arranged on the base. Set on the same plane, the sliding platform is hung on the guide rod, the sliding platform has a lens setting, the lens is opposite to a light transmission hole of the base, the driving device is set on the base The seat drives the displacement of the sliding platform, and the limiting device is located on the base to limit the displacement range of the sliding platform. 2. The optical anti-shake driving structure according to claim 1, characterized in that: the light-transmitting hole is located at the center of the base and runs through the base, and the light-transmitting hole allows light to enter or exit . 3 . The optical anti-shake driving structure according to claim 1 , wherein the plane where the guide rod is located is perpendicular to the light passing through the light-transmitting hole. 4 . 4. The optical anti-shake drive structure according to claim 1, characterized in that: the base is provided with a bearing seat, the bearing seat is supported at both ends of the guide rod, and the guide rod and the guide rod There is a gap between the surfaces of the base, and the height of the gap allows the setting of the sliding platform. 5 . The optical anti-shake driving structure according to claim 1 , wherein a hole is formed on the sliding platform, and the lens is arranged in the hole. 6 . 6. The optical anti-shake driving structure according to claim 1, wherein the sliding platform comprises a first plane and a second plane, the first plane faces the surface of the base, the The second plane is located on the back side of the first plane. 7. The optical anti-shake drive structure according to claim 6, characterized in that: there are at least three hooks arranged on the second plane relative to the guide rod, and the hooks are vertically erected on the On the second plane, there is a distance between the buckle end of the hook and the second plane, the width of the distance allows the setting of the guide rod, and the hooks are respectively hooked on the guide rod superior. 8. The optical anti-shock driving structure according to claim 7, characterized in that: the buckle end of the hook is an angular cylinder, and the corner of the angular cylinder is hooked on the guide rod. on the cylindrical rod. 9. The optical anti-shake driving structure according to claim 8, wherein the hook end of the hook is a triangular prism, and is hooked on the guide rod by one of the corners. 10. The optical anti-shake driving structure according to claim 1, characterized in that: the driving device comprises at least two coils, at least two magnets and at least two Hall sensors, the coils and the Hall sensors The sensor is arranged on the surface of the base, and the magnet is arranged on the first plane. 11. The optical anti-shake drive structure according to claim 1, characterized in that: two guide rods are arranged on the base, and the driving device uses two coils, two magnets and two guide rods relative to the guide rods. A Hall sensor, the coil, the magnet, and the Hall sensor are arranged relative to the guide rod, and each of the two guide rods has an axial drive assembly. 12. The optical anti-shake driving structure according to claim 1, characterized in that: the limiting device comprises a positioning post and a positioning hole, the positioning post is arranged on the surface of the base, and the positioning A hole is arranged on the sliding platform, and the positioning column is located in the positioning hole. 13. The optical anti-shake driving structure according to claim 12, characterized in that: the hole shape of the positioning hole is shaped relative to the position where the guide rod is arranged. 14. The optical anti-shake driving structure according to claim 12, wherein two guide rods are arranged on the base, and the shape of the positioning hole is rectangular.

Images