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Speckle elimination device based on Mie scattering and optical device

An optical device, Mie scattering technology, applied in optical components, optics, instruments, etc., can solve the problems of poor speckle elimination effect, complex structure, easy damage, etc., to achieve good speckle elimination effect, reasonable structure, Stable performance

Active Publication Date: 2011-05-11
SHANXI OVISION OPTRONICS CO LTD
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Problems solved by technology

[0004] The present invention provides a speckle elimination device based on Mie scattering and optical devices in order to solve the problems of poor speckle elimination effect, complex structure, easy damage and high cost existing in existing speckle elimination methods

Method used

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  • Speckle elimination device based on Mie scattering and optical device
  • Speckle elimination device based on Mie scattering and optical device
  • Speckle elimination device based on Mie scattering and optical device

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Embodiment Construction

[0029] like figure 2 , 3 As shown, the speckle elimination device based on Mie scattering and optical devices includes an optical reflective cavity 302 with an incident light coupling device 301 and a transmission exit surface 303 on it, and an optical reflective cavity 302 that is set directly opposite to the optical reflective cavity 302 and the incident light coupling device 301. Optical device 308; the optical device 308 is an optical device that can change the incident angle of the light beam when the optical reflection cavity 302 enters the optical coupling device 301; the inner walls of the optical reflection cavity 302 except the inner wall of the transmission exit surface 301 are all "mirror surfaces" The inner wall (that is, the inner wall has high reflectivity characteristics and can "totally reflect" the laser beam incident in the optical reflective cavity), the optical reflective cavity 302 is provided with a transparent solid material 401 that fills the entire o...

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Abstract

The invention discloses a speckle elimination device based on Mie scattering and an optical device, relating to the technical field of display by taking coherent light as a light source; and the device provided by the invention can be used for solving the problems of poor speckle elimination effect, complex realization structure, high possibility of damaging, high cost and the like of the existing speckle elimination method. The speckle elimination device comprises an optical reflection cavity and the optical device, wherein the optical reflection cavity is provided with an incident light coupling device and a transmission outgoing surface; the optical device is over against the incident light coupling device of the optical reflection cavity and can change the incident angle of a light beam when the light beam enters the incident light coupling device of the optical reflection cavity; the inner walls, expect the inner wall of the transmission outgoing surface, of the optical reflection cavity are all 'mirror surface' inner walls; the optical reflection cavity is filled with a transparent solid matter; and medium particles the linearity of which can cause incident laser to be subjected to Mie scattering are scattered in the transparent solid matter. The speckle elimination device has the advantages of simple and compact structure, good speckle elimination effect, high laser utilization ratio, stable performance, safety, reliability and light homogenizing ability.

Description

technical field [0001] The invention relates to the field of display technology using coherent light as a light source, in particular to a speckle elimination device based on Mie scattering and optical devices, and mainly aims at the optical speckle phenomenon existing in laser display technology and optical instruments. Background technique [0002] When the laser is used as the light source to irradiate the screen, due to the coherence of the laser and the roughness of the screen, the human eye sees an image covered by speckle, which seriously affects the image display quality and prevents the observer from extracting useful information from the image. Therefore, how to eliminate speckle has always been a research and development hotspot in the field of optical instruments and display technology with laser as the light source. As far as the current research results are concerned, the methods used to eliminate speckle can be roughly divided into two categories: 1. Reduce sp...

Claims

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Application Information

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IPC IPC(8): G02B27/48
CPCG02B27/102G02B27/48
Inventor 陈旭远高文宏石云波张文栋
Owner SHANXI OVISION OPTRONICS CO LTD
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