• Patent Title: Method and apparatus to increase visual contrast for video projection screen
  • Application No.: US10653980
    Application Date: 2003-09-04
  • Publication No.: US06836361B2
    Publication Date: 2004-12-28
  • Inventor: Alpha Hou
  • Applicant: Alpha Hou
  • Main IPC: G03B2126
  • IPC: G03B2126
Method and apparatus to increase visual contrast for video projection screen
Abstract:
A front projection screen for a video projection system is provided. The front projection screen includes a reflection screen surface, and a reflection material on the reflection screen surface, wherein the reflection material consists of a plurality of red, green, and blue color reflecting cells for receiving projected lights, absorbing a part of the projected lights having spectrums beyond ranges of red, green, and blue color spectrums, and reflecting a part of the projected lights having spectrums within ranges of red, green, and blue color spectrums back.
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