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Piezoelectric three-axis camera driving device and driving method

A drive device, piezoelectric technology, applied in hand-held camera devices, piezoelectric three-axis camera drive devices and drive fields, can solve the problems that camera lens drive devices cannot achieve large displacement, large load and high-speed focusing, and achieve structural Simple, responsive, and easy-to-assemble effects

Active Publication Date: 2021-09-28
辽宁中蓝光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a piezoelectric three-axis camera driving device and driving method with reasonable structure and reliable use, to solve the problem that the existing camera lens driving device cannot realize the functions of large displacement, large load, and high-speed focusing, and realize the lens Excellent fast focus and anti-shake function, with the advantages of small size, large thrust, large displacement, no magnetic interference, simple structure and easy assembly

Method used

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  • Piezoelectric three-axis camera driving device and driving method
  • Piezoelectric three-axis camera driving device and driving method
  • Piezoelectric three-axis camera driving device and driving method

Examples

Experimental program
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Embodiment 2

[0055] In this example, if Figure 15 As shown, the third piezoelectric ceramic vibrator assembly 12 adopts a preloaded assembly that is different from that in Embodiment 1.

[0056] That is, there is another preloading assembly between the second mobile body 3 and the lens carrier 5, and the preloading assembly is a C-shaped metal dome 17, and the C-shaped metal dome 17 is fixed on the third piezoelectric ceramic vibrator assembly 12. At one end of the cantilever piezoelectric ceramic body 1201 close to the second moving body 3 , the opening side of the C-shaped metal dome 17 is pressure-fixed with the second moving body 3 to provide elastic preload for the third piezoelectric ceramic vibrator assembly 12 .

[0057] Others are the same as embodiment 1.

Embodiment 3

[0059] In this example, if Figure 16 As shown, the third piezoelectric ceramic vibrator assembly 12 adopts a preloaded assembly that is different from that in Embodiment 1.

[0060] A preload assembly is provided in the side wall of the second moving body 3, and the preload assembly includes a zigzag fixed frame 18 and a spring 19, and the cantilever piezoelectric ceramic body 1201 of the third piezoelectric ceramic vibrator assembly 12 is placed horizontally In the zigzag fixed frame 18, one end is exposed and connected to the active friction block 1202, and one end of the spring 19 is connected with the side wall of the zigzag fixed frame 18, and one end is connected with the bottom of the spring 19 fixing groove of the second moving body 3, and the zigzag is fixed. The frame 18 and the spring 19 provide elastic preload for the third piezoelectric ceramic vibrator assembly 12;

[0061] Others are the same as embodiment 1.

Embodiment 4

[0063] In this example, if Figure 17 As shown, the third piezoelectric ceramic vibrator assembly 12 adopts a preloaded assembly that is different from that in Embodiment 1.

[0064] The side wall of the second moving body 3 is provided with a preloading assembly and the preloading assembly includes a stamped leaf spring 20. The stamped leaf spring 20 is a several-shaped structure and is made of elastic metal material. The second moving body The side wall of 3 is provided with a fixing groove corresponding to the stamped leaf spring 20, the cantilever piezoelectric ceramic body 1201 of the third piezoelectric ceramic vibrator assembly is placed horizontally in the several-shaped structure of the stamped leaf spring 20, and one end is exposed and connected The active friction block 1202 and the upper and lower clamping surfaces of the stamped leaf spring 20 provide elastic preload for the third piezoelectric ceramic vibrator assembly 12 .

[0065] Others are the same as embodi...

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Abstract

The invention relates to a piezoelectric three-axis camera driving device and a driving method. The technical key points are that the piezoelectric three-axis camera driving device comprises a base; a protective shell; a frame unit including a first moving body, a second moving body, and a lens carrier; a piezoelectric driving unit comprising a first piezoelectric ceramic vibrator assembly used for driving the first moving body to move along the X axis relative to the base, a second piezoelectric ceramic vibrator assembly used for driving the second moving body to move along the Y axis relative to the first moving body, and a third piezoelectric ceramic vibrator assembly used for driving the lens carrier to move along the Z axis relative to the second moving body; a position sensing unit comprising an X-direction position sensing assembly, a Y-direction position sensing assembly and a Z-direction position sensing assembly. The driving device solves the problem that an existing camera lens driving device cannot achieve the large-displacement, large-load and high-speed focusing function, achieves the rapid focusing and anti-shake functions of a lens, and has the advantages of being small in size, large in thrust, large in displacement, free of magnetic interference, simple in structure and easy to assemble.

Description

technical field [0001] The invention relates to a camera lens driving device, in particular to a piezoelectric three-axis camera driving device and a driving method, which are suitable for a hand-held camera device. Background technique [0002] At present, hand-held camera devices, especially camera drive devices of mobile phones, basically use a voice coil motor (Voice Coil Motor, VCM) to drive the entire lens. Although this method has the advantages of simple structure, mature technology, and low cost, there are still the following problems : [0003] Application scenarios are basically limited to low-to-medium load, medium-to-low displacement main camera, sub-camera, wide-angle, macro, low-to-medium magnification telephoto, etc., limited by lens movement and drive methods, it is impossible to achieve large load, large displacement and Achieve ultra-long-distance shooting. With the urgent need for ultra-long-distance shooting, realizing the high-magnification continuous...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/04G03B13/34G03B5/00G03B30/00
CPCG02B7/04G03B13/34G03B5/00G03B30/00Y02E40/30
Inventor 王全岭张浩男张曦
Owner 辽宁中蓝光电科技有限公司
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