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Shimming decoherence device based on rotation reflecting surface and scatterer

A technology of rotating reflectors and scatterers, used in optical components, optics, instruments, etc., can solve problems such as poor speckle elimination effect and blurred images, and achieve the effect of eliminating laser speckle, small light energy loss, and stable performance.

Active Publication Date: 2013-05-29
SHANXI OVISION OPTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the existing laser speckle removal device has poor speckle removal effect and easily causes image blur, the present invention provides a shimming and decoherence device based on a rotating reflective surface

Method used

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  • Shimming decoherence device based on rotation reflecting surface and scatterer
  • Shimming decoherence device based on rotation reflecting surface and scatterer
  • Shimming decoherence device based on rotation reflecting surface and scatterer

Examples

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Effect test

Embodiment 1

[0037] Such as figure 1 , 2 As shown, a shimming and decoherence device based on a rotating reflector and a scatterer includes a decoherence mechanism 1 , a converging lens 2 and a light guide 3 . The decoherence mechanism 1 includes a motor 101, a reflector 102, a connecting ring 103 and a transparent scatterer 104, and the reflector 102 and the scatterer 104 are respectively fixed on both sides of the connector 103, and the motor 101 The output shaft is fixedly connected to the back (non-reflecting surface) of the reflector 102; the converging lens 2 and the light pipe 3 with shimming function are sequentially arranged on the outgoing light path of the decoherence mechanism 1 .

[0038] when working, such as Figure 4As shown, when the laser beam 801 is incident on the decoherence mechanism 1 at a certain angle (the laser beam is not perpendicular to the reflector), it is transmitted through the incident point 802 on the scatterer 104 in turn, reflected by the reflector 10...

Embodiment 2

[0040] Such as figure 1 , 3 As shown, a shimming and decoherence device based on a rotating reflector and a scatterer. The difference between this embodiment and Embodiment 1 is that on the basis of Embodiment 1, the axis of the output shaft of the motor 101 and the connecting ring 103 (or transparent connecting entity) axes intersect, that is, the reflector 102 , the scatterer 104 and the connecting ring 103 are connected by a mechanical structure and fixed on the output shaft of the motor 101 at a certain deflection angle 105 .

[0041] when working, such as Figure 5 As shown, when the mirror 102, the scattering sheet 104 and the connecting ring 103 are connected by a mechanical structure and fixed on the output shaft of the motor 101 at a certain deflection angle 105, due to the high-speed rotation of the decoherence mechanism 1, when the incident laser light 801 passes through After the decoherence mechanism 1, taking the outgoing light 804 and 805 as an example, the o...

Embodiment 3

[0047] A shimming decoherence device based on a rotating reflective surface and a scatterer, comprising a decoherence mechanism 1 , a converging lens 2 and a light guide 3 . The decoherence mechanism 1 includes a motor 101, a reflector 102, a wedge-shaped connecting ring 103 (or a transparent connecting entity) and a transparent scatterer 104, and the reflector 102 and the scatterer 104 are respectively fixed on the Both sides of the connection ring 103, and the reflector 102 is obliquely fixed on one side of the connection ring 103 to form a slope, and the output shaft of the motor 101 is fixedly connected to the back (non-reflection surface) of the reflector 102; The axis of the motor 101 is perpendicular to the scatterer 104 .

[0048] In a specific implementation, the motor 101 may be a rotary motor, a vibration motor or a linear motor.

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Abstract

The invention relates to the technical field of laser speckle elimination, in particular to a shimming decoherence device based on a rotation reflecting surface and a scatterer. The problem that the existing laser speckle elimination device is poor in speckle elimination effect and image blurring can be caused easily is solved. The shimming decoherence device based on the rotation reflecting surface and the scatterer comprises a decoherence mechanism (1). The decoherence mechanism (1) comprises a motor (101), a reflector (102), a connecting piece (103) and the transparent scatterer (104). The reflector (102) and the scatterer (104) are fixed on two sides of the connecting piece (103) respectively, and an output shaft of the motor (101) is fixedly connected with the back of the reflector (102). A converging lens (2) and a light pipe (3) with a shimming function are sequentially arranged on an output optical path of the decoherence mechanism (1). The shimming decoherence device is reasonable in design and simple in structure and effectively eliminates the laser speckles.

Description

technical field [0001] The invention relates to the technical field of laser speckle elimination, in particular to a shimming and decoherence device based on a rotating reflective surface. Background technique [0002] Laser has the advantages of high brightness, good monochromaticity, and good directionality, and has broad application prospects in the field of laser display and laser lighting. However, since laser light is coherent light, after being reflected by a rough surface (such as a screen), the human eye receives an image with speckle, which seriously reduces the display quality of the image. Therefore, it is necessary to eliminate the laser speckle phenomenon, Improve image display quality. [0003] The patent with the publication number CN02103270A utilizes the holographic diffuser to rotate at high speed under the drive of a micro-DC motor to scatter the incident light beam, so that the irrelevant scattering field is randomly superimposed at high speed during th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/48G02B26/10
Inventor 高文宏陈海洋蔡力王艳红
Owner SHANXI OVISION OPTRONICS CO LTD
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