Speckle elimination device based on Mie scattering and optical device

An optical device, Mie scattering technology, applied in optical elements, optics, instruments, etc., can solve the problems of poor speckle elimination effect, complex realization structure, high cost, and achieve good speckle elimination effect, reasonable structure, high cost. The effect of utilization

Active Publication Date: 2013-06-05
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] Such as figure 2 , 3 As shown, the speckle elimination device based on Mie scattering and optical devices includes an optical reflection cavity 302 on which an incident light coupling device 301 and a transmission and exit surface 303 are arranged, and an incident light coupling device 301 is arranged facing the optical reflection cavity 302 Optical device 308; The optical device 308 is an optical device that can change the angle of incidence when the beam enters the optical reflecting cavity 302 into the light coupling device 301; the inner walls of the optical reflecting cavity 302 except for the inner wall of the transmission and exit surface 301 are all "mirror surfaces" The inner wall (that is, the inner wall has the characteristics of high reflectivity and can "total reflect" the laser beam incident on the optical reflection cavity), the optical reflection cavity 302 is provided with a transparent solid substance 401 that fills the entire optical reflection cavity 3...

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Abstract

Disclosed is a speckle removal device (300) based on Mie scattering and an optical part. The speckle removal device (300) comprises: an optical reflective chamber (302) disposed with an incident optical coupler device (301) and an emergent surface (303), and an optical part (308) disposed facing the incident optical coupler device (301) of the optical reflective chamber (302). The optical part (308) is an optical part that changes the incident angle of light beams. The inner walls of the optical reflective chamber (302) are all mirrors except the inner wall of the emergent surface. The inside of the optical reflective chamber (302) is completely filled with a transparent solid matter (401), and dispersed inside of the transparent solid matter (401) are medium particles (402) that trigger Mie scattering on an incident laser. The speckle removal device (300) has a compact structure, high speckle removal effect, high laser utilization rate, and stability, and makes illumination even.

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 is mainly aimed at the optical speckle phenomenon existing in laser display technology and optical instruments. Background technique [0002] When a laser is used as a light source to illuminate the screen, due to the coherence of the laser and the roughness of the screen, the human eye sees the image covered by speckle, which seriously affects the image display quality and hinders 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 a light source. According to the current research results, the methods used to eliminate speckle can be roughly divided into two categories: 1. Reduce speckle by controll...

Claims

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Application Information

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