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Speckle elimination device based on Mie scattering and Brownian motion

A technology of Mie scattering and Brownian motion, applied in optical components, optics, instruments, etc., can solve the problems of poor speckle elimination effect, complex realization structure and high cost, and achieve good speckle elimination effect and uniform light energy distribution. , the effect of high utilization

Inactive Publication Date: 2011-05-25
ZHONGBEI UNIV
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Problems solved by technology

[0004] The present invention provides a speckle elimination device based on Mie scattering and Brownian motion 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 Brownian motion
  • Speckle elimination device based on Mie scattering and Brownian motion
  • Speckle elimination device based on Mie scattering and Brownian motion

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Embodiment Construction

[0023] Such as figure 2 As shown, the speckle elimination device based on Mie scattering and Brownian motion includes a closed optical reflection cavity 302 on which an incident light coupling device 301 and a transmission exit surface 303 are arranged. The closed optical reflection cavity 302 except the transmission exit surface 303 The inner walls other than the inner wall are all "mirror" inner walls (that is, the inner wall has high reflectivity characteristics and can "totally reflect" the laser beam incident in the optical reflection cavity), and the closed optical reflection cavity 302 is filled with the entire closed optical reflection cavity. The solution or sol 401 in the reflective cavity 302 , and the solution or sol 401 is dispersed with medium particles 402 whose dimensions can cause Mie scattering of the incident laser light 101 .

[0024] During specific implementation, the solution is an organic solution or an inorganic solution; the sol is an aerosol or a ly...

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Abstract

The invention relates to the technical field of displaying by taking coherent light as a light source, and in particular relates to a speckle elimination device based on Mie scattering and Brownian motion, aiming at solving the problems of poor speckle elimination effect, complex implementation structure, high possibility of damage, high cost and the like existing in the existing speckle elimination method. The speckle elimination device based on Mie scattering and Brownian motion comprises a sealed optical reflecting cavity provided with an incident light coupling device and a transmission and emergence surface; all the inner walls of the sealed optical reflecting cavity, except the inner walls of the transmission and emergence surface, are mirror surface inner walls; the sealed optical reflecting cavity is fully filled with a solution or a sol; and insulating particles which are in proper dimension to lead to the Mie scattering of incident laser are scattered in the solution or sol. The speckle elimination device based on Mie scattering and Brownian motion has the advantages of simple and compact structure, low manufacturing cost, good speckle elimination effect, high laser utilization ratio, stable performance and light uniformizing function, is easy to implement and is safe and reliable.

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 Brownian motion, 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
CPCG02B27/48
Inventor 陈旭远高文宏石云波唐国先
Owner ZHONGBEI UNIV
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