Focusing mechanism

A lens and cavity technology, applied in the field of optics, can solve the problems of high manufacturing cost and complex structure

Pending Publication Date: 2022-02-11
桂林海威科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the focusing mechanisms on the market adopt automatic focusing schemes. These focusing mechanisms are usually composed of motors, gears and other components, and the structure is very complicated.
For low-end products, if the existing focusing mechanism is used, there will be a problem of high manufacturing cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0036] see Figure 1 to Figure 4 , in this embodiment, a focusing mechanism is proposed, including a lens 1 and a mount 2 .

[0037] Such as Figure 5 to Figure 7 As shown, the support 2 has a receiving cavity 21 . Wherein, the lens 1 is rotatably and slidably disposed in the accommodating cavity 21 .

[0038] In order to facilitate the installation of the lens 1 , the accommodating cavity 21 is shaped like a cylinder, and the accommodating cavity 21 runs through the top surface of the support 2 . Wherein, the inner diameter of the accommodation cavity 21 is larger than the maximum outer diameter of the lens 1 .

[0039] Since the focusing mechanism needs to be used in conjunction with projection lamps, cameras and other equipment, considering the propagation of light, the support 2 is provided with a light-transmitting hole 22 coaxial with the accommodating cavity 21, wherein the light-transmitting hole 22 runs through the support 2 The bottom surface is in communication ...

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PUM

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Abstract

The invention provides a focusing mechanism which comprises a lens and a support with an accommodating cavity, and the lens is rotatably and slidably arranged in the accommodating cavity; the bottom surface of the lens directly faces the bottom surface of the accommodating cavity, and the bottom surfaces of the lens and the accommodating cavity are flat surfaces and are parallel to each other; the bottom surface of the lens is provided with concave structures, and the bottom surface of the accommodating cavity is provided with convex structures in one-to-one correspondence with the concave structures; the concave structure comprises a plurality of step surfaces, and the step surfaces are distributed in a stepped manner and are parallel to the bottom surface of the lens; and the lens rotates relative to the containing cavity, and when the protruding structure right faces the different step faces, the distances between the bottom face of the lens and the bottom face of the containing cavity are different. The focusing mechanism is simple in structure and convenient to operate.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a focusing mechanism. Background technique [0002] At present, most of the focusing mechanisms on the market adopt automatic focusing schemes. These focusing mechanisms are usually composed of motors, gears and other components, and the structure is very complicated. For low-end products, if the existing focusing mechanism is used, there will be a problem of high manufacturing cost. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the prior art and provide a focusing mechanism to solve the problems of the prior art. [0004] In order to solve the above problems, the present invention provides: a focusing mechanism, including a lens and a support having a housing cavity, and the lens is rotatably and slidably arranged in the housing cavity; [0005] Relative to the accommodation cavity, the rotation axis of the lens is per...

Claims

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Application Information

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IPC IPC(8): G03B21/14G03B13/32
CPCG03B21/142G03B13/32
Inventor 刘秀强黄仁萍周明王建卫邓明才覃奕王咏
Owner 桂林海威科技股份有限公司
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