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Dynamic focusing device and scanning galvanometer

A dynamic focusing and lens technology, applied in installation, optics, instruments, etc., can solve the problems of feedback delay and error, difficult to control, and different sizes of matching gaps.

Pending Publication Date: 2020-05-08
ZHENJIANG JINHAICHUANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a dynamic focusing device and a scanning galvanometer to alleviate the dynamic focusing device in the prior art, which has different matching gaps, is difficult to control, and easily causes swing instability, feedback delays and errors. question

Method used

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  • Dynamic focusing device and scanning galvanometer
  • Dynamic focusing device and scanning galvanometer
  • Dynamic focusing device and scanning galvanometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] refer to figure 1 , the dynamic focusing device provided by this embodiment includes a bracket, a driving mechanism 20, a swinging member, a connecting belt 30, and a lens slide frame 10 on which lenses are installed, wherein the driving mechanism 20 is installed on the bracket and is drivingly connected with the swinging member, and the lens slides The frame 10 is slidably arranged on the support, that is, the lens slide frame 10 can only do linear reciprocating sliding relative to the support, the connecting belt 30 connects the swinging member and the lens sliding frame 10, and the connection between the connecting belt 30 and the swinging member is relatively fixed; when the driving mechanism 20 is working , can drive the swinging member to rotate, and when the swinging member rotates, it will drive the connecting belt 30 to move together, and the lens carriage 10 can complete its linear sliding on the bracket by the force of the connecting belt 30 connected thereto....

Embodiment 2

[0064] This embodiment provides a scanning galvanometer, including the dynamic focusing device described in any one of the foregoing implementation manners.

[0065] The technical advantages of the scanning galvanometer provided in this embodiment are the same as those of the above-mentioned dynamic focusing device, and will not be repeated here.

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PUM

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Abstract

The invention relates to a dynamic focusing device and a scanning galvanometer, and relates to the technical field of dynamic focusing devices. The dynamic focusing device comprises a support, a driving mechanism, a swing piece, a connecting belt and a lens sliding frame provided with a lens; the driving mechanism is installed on the support and is in driving connection with the swing part to drive the swing part to rotate, the lens sliding frame is slidably arranged on the support, the connecting belt is connected with the swing part and the lens sliding frame, and the connecting belt can move along with the swing part and drive the lens sliding frame to slide back and forth relative to the support. The technical problems that a dynamic focusing device in the prior art is not uniform in fit clearance size and not easy to control, so that unstable swing is easily caused, and feedback has delay and errors are solved.

Description

technical field [0001] The present invention relates to the technical field of dynamic focusing devices, in particular to a dynamic focusing device and a scanning galvanometer. Background technique [0002] At present, there are mainly two types of dynamic focusing devices: the first one uses a voice coil motor to drive the lens, its movement range is small, heat dissipation is difficult to deal with, and the stability is not high enough; the second one uses a vibrating mirror motor to drive the lens. The link mechanism and the slider transmission are realized, specifically converting the rotation of the motor (actually the swing within a certain angle) into the horizontal movement of the lens. The above-mentioned second method has a relatively long response time, which affects the actual working speed, and because the swing angle of the crank and the displacement of the slider are nonlinear, it is difficult to accurately control the actual position of the lens; at the same ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/04G02B26/10
CPCG02B7/04G02B26/105
Inventor 周双留李高峰
Owner ZHENJIANG JINHAICHUANG TECH