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    • 4. 发明申请
    • 投影用スクリーン
    • 投影画面
    • WO2003077027A1
    • 2003-09-18
    • PCT/JP2003/003090
    • 2003-03-14
    • ソニー株式会社久保田 重夫大迫 純一柿沼 正康下田 和人
    • 久保田 重夫大迫 純一柿沼 正康下田 和人
    • G03B21/60
    • G02B5/285G02B5/0242G02B5/0284G02B5/20G03B21/60
    • A projection screen capable of providing a clear and sharp image thereon without being affected by the brightness of a projection environment. The projection screen displays an image by projecting the narrow-band primaries wavelength band light, and includes on a screen substrate (2) an optical thin film (3) having a high reflection characteristic to the narrow-band primaries wavelength band light and a high transmission characteristic to the visible wavelength band light other than the aforementioned wavelength band light. In the projection screen, the optical thin film (3) plays a role as a so-called a band filter. That is, the optical thin film (3) functions as a narrow-band primaries wavelength band filter having the effect of particularly reflecting the narrow-band primaries wavelength band light and substantially transmitting the light of the other wavelength, thereby separating these two kinds of light.
    • 一种能够在其上提供清晰而清晰的图像而不受投影环境的亮度影响的投影屏幕。 投影屏幕通过投影窄带初级波长带光来显示图像,并且在屏幕基板(2)上包括对窄带初级波长带光具有高反射特性的光学薄膜(3)和高 对除了上述波长带光之外的可见波长带光的透射特性。 在投影屏幕中,光学薄膜(3)起着所谓的带式滤光器的作用。 也就是说,光学薄膜(3)用作具有特别反映窄带初级波长带光并且基本上透射另一波长的光的窄带初级波长带滤光器,从而将这两种 光。