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Color display color-combining device based on three primary colors of red, green and blue

A color display and three-primary-color technology, applied in the field of color-combining devices, achieves the effects of low cost, bright and rich colors, and simple assembly

Inactive Publication Date: 2012-05-02
FUJIAN CASTECH CRYSTALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, X prisms are usually used in the optical field, which are formed by gluing four right-angle prisms along the right-angle surfaces. X prisms can realize the polarization synthesis of three primary colors, but the processing is complicated, the film system is difficult, and the gluing and assembly are even more difficult.
[0003] Commonly used three-color dichroic prisms are Philips dichroic prisms, which are mainly used in digital cameras and high-brightness super-large-screen projection display systems, but the structure is complex, requiring many components to be processed, and assembly is not easy

Method used

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  • Color display color-combining device based on three primary colors of red, green and blue
  • Color display color-combining device based on three primary colors of red, green and blue

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Embodiment Construction

[0009] Such as figure 1 , a red, green, blue primary color display color combining device of the present invention, comprising a pentaprism 11, a right-angle prism 12, and a right-angle prism 13. Penta prism angles are 90°, 112.5°, 112.5°, 112.5°, 112.5°, four sides 21, 22, 24, 26 are polished; 22.5° right-angle prism 12, right-angle prism 13 angles are 22.5°, 67.5°, both sides are polished After polishing, the non-rectangular surface 24 of the pentagonal prism is coated with a layer of filter film, green light passes through, and red light is reflected; after another non-rectangular surface 26 of the pentagonal prism is polished, it is coated with a layer of filter film, green light and red light Total reflection, blue light transmission; surface 21 is coated with red light antireflection coating, surface 23 is coated with green light antireflection coating, surface 27 is coated with blue light antireflection coating, and surface 22 is coated with red, green and blue antirefl...

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Abstract

The invention relates to a color display color-combining device based on three primary colors of red, green and blue. The device comprises a pentagonal prism and two 22.5 degree right-angle prisms, wherein the angles of the pentagonal prism are 90 degrees, 112.5 degrees, 112.5 degrees, 112.5 degrees and 112.5 degrees; the angles of each right-angle prism are 22.5 degrees and 67.5 degrees; the 67.5 degree angles of the two right-angle prisms and the 112.5-degree angles of the pentagonal prism form a 180 degree structure; filter films are plated on the connected surfaces of the pentagonal prism and the two 22.5 degree right-angle prisms; and anti-reflection films are plated on an emergent surface and an incident surface. The device has the advantages of simple structure, high damage threshold value, low manufacturing cost and high light-combining efficiency, and is convenient to glue.

Description

technical field [0001] The invention relates to a color combining device in the field of optics, in particular to a color combining device for displaying three primary colors of red, green and blue. Background technique [0002] In laser display, liquid crystal (LCD) or liquid crystal on silicon (LCoS) projection systems, in order to achieve color display, it is necessary to combine the three beams of light from red, green and blue on one optical path. At present, X prisms are usually used in the optical field, which is formed by gluing four right-angle prisms along the right-angle surfaces. X prisms can realize the polarization synthesis of three primary colors, but the processing is complicated, the film system is difficult, and the gluing and assembly are even more difficult. [0003] Commonly used three-color dichroic prisms are Philips dichroic prisms, which are mainly used in digital cameras and high-brightness super-large-screen projection display systems, but the str...

Claims

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Application Information

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IPC IPC(8): G02B27/10G02B1/10G02B5/20
Inventor 朱一村吴季吴少凡
Owner FUJIAN CASTECH CRYSTALS
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