Mie scattering and field-induced deformation polymers-based speckle eliminating device

Abstract

The invention relates to the technical field of display which takes coherent light as a light source, in particular to a Mie scattering and field-induced deformation polymers-based speckle eliminating device, and solves the problems that a speckle effect is poor, a realization structure is complex, the device is easy to damage, the cost is high and the like in a conventional speckle eliminating method. The device comprises an optical reflection cavity on which an incident light coupling device and a transmission exit surface are arranged; the inner wall, besides the inner wall of the transmission exit surface, of the optical reflection cavity is the inner wall of a mirror surface; a transparent solid substance filling the overall optical reflection cavity is arranged in the optical reflection cavity; medium particles of which the dimension can cause the Mie scattering of an incident laser are dispersed in the transparent solid substance, wherein the transparent solid substance is a field-induced deformation polymer; and the optical reflection cavity is matched with an actuating device which is used for generating an external field required by the polymer in the cavity. The device is easy to implement, along with a reasonable and compact structure, a good speckle eliminating effect, low cost, high laser utilization rate, stable performance, safety, reliability and light homogenizing function.

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 field-induced deformation polymers, mainly aimed 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 categori...

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Problems solved by technology

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

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