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Closed-loop AF automatic focusing lens driving device

A lens drive device and auto-focus technology, which is applied in installation, optics, instruments, etc., can solve the problems of complex drive device structure, unstable product quality, long response time, etc., to avoid reassembly and bonding, simple structure, and product quality The effect of stable quality

Inactive Publication Date: 2016-05-18
HENAN HAOZE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing domestic and foreign micro-camera lens driving devices mostly adopt the similar scheme disclosed in Chinese Patent Publication No. CN1683946A. This kind of lens driving device has two shrapnels. Because of the inherent oscillation characteristics of the spring in the moving process, a certain amount of vibration is required. It takes a stable time to stop at a fixed position, the response time is long, and the displacement accuracy is poor due to the relationship between the shrapnel; moreover, this kind of driving device has a complex structure, many parts, and complex assembly, which is likely to cause unstable product quality

Method used

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  • Closed-loop AF automatic focusing lens driving device
  • Closed-loop AF automatic focusing lens driving device
  • Closed-loop AF automatic focusing lens driving device

Examples

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The schematic embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0014] like Figure 1-4 A closed-loop AF autofocus lens driving device shown includes a frame 1, a clamping groove, a ball, a movable unit and a driving feedback unit, and the movable unit includes a lens support body 2, a driving magnet 4 and a feedback magnet 5, and the The drive feedback unit includes a Hall element 6, a drive coil 7 and a circuit board 8, the lens support 2 is placed inside the frame 1, and the drive magnet 4 and the feedback magnet 5 are respectively placed on the right side of the lens support 2. In different positions, the circuit board 8 is placed on the right side inside the frame 1, the inner side of the circuit board 8 is opposite to the right side of the ...

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Abstract

The invention discloses a closed-loop AF automatic focusing lens driving device comprising a frame, two clamping slots, balls, a moving unit and a driving feedback unit; the moving unit comprises a lens supporting body, a driving magnet, and a feedback magnet; the driving feedback unit comprises a Hall element, a drive coil, and a circuit board; two clamping slots are formed between the lens supporting body and the frame; the two clamping slots are located at diagonal positions; the two clamping slots are loaded with balls therein; the circuit board has an integral forming structure and can be mounted on the frame through a slot-embedded structure. The beneficial effects of the driving device are: the device has simple structure, easy assembling, small moving frictional force, high displacement precision, and stable product quality.

Description

technical field [0001] The invention relates to a lens driving device, in particular to a closed-loop AF automatic focusing lens driving device. Background technique [0002] The voice coil motor is a device that uses the interaction between the magnetic field from the permanent magnet steel and the magnetic poles in the magnetic field generated by the energized coil conductor to generate regular motion, and is widely used in mobile phone cameras. The existing domestic and foreign micro-camera lens driving devices mostly adopt the similar scheme disclosed in Chinese Patent Publication No. CN1683946A. This kind of lens driving device has two shrapnels. Because of the inherent oscillation characteristics of the spring in the moving process, a certain amount of vibration is required. It takes a stable time to stop at a fixed position, the response time is long, and the displacement accuracy is poor due to the relationship between the shrapnel; moreover, this kind of driving dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/09
CPCG02B7/09
Inventor 闫敏
Owner HENAN HAOZE ELECTRONICS
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