• 专利标题: Projection screen and its manufacturing method
  • 申请号: US11325929
    申请日: 2006-01-05
  • 公开(公告)号: US20060114560A1
    公开(公告)日: 2006-06-01
  • 发明人: Kazuhito Shimoda
  • 申请人: Kazuhito Shimoda
  • 申请人地址: JP Tokyo
  • 专利权人: Sony Corporation
  • 当前专利权人: Sony Corporation
  • 当前专利权人地址: JP Tokyo
  • 优先权: JPJP2002-215666 20020724; JPJP2002-259027 20020904
  • 主分类号: G03B21/60
  • IPC分类号: G03B21/60
Projection screen and its manufacturing method
摘要:
The invention provides a projection screen, wherein clear images can be obtained without being influenced by projection environments, the flexibility can be obtained, and its manufacturing cost can be reduced and its manufacturing method. An optical multilayer film is formed on a transparent substrate by alternately layering metal films and dielectric films by using spattering. This multilayer film has the high reflection characteristics in relation to three primary colors wavelength bands lights, and has the high absorption characteristics in relation to lights other than the three primary colors wavelength bands lights. Therefore, the white level and the black level of images can be raised. Further, in terms of the optical multilayer film, as the film thickness dependence of the reflectance change becomes smaller and the incidence angle dependence of reflectance change becomes smaller, a wide visual field angle can be obtained.
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