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    • 8. 发明授权
    • Projection system using ambient light
    • 投影系统使用环境光
    • US07040764B2
    • 2006-05-09
    • US10691835
    • 2003-10-23
    • James R. PrzybylaArthur Piehl
    • James R. PrzybylaArthur Piehl
    • G03B21/14G03B21/00G03B21/56
    • G03B21/005
    • Ambient light that is modified for use in a projection system is described. In an embodiment of the present invention, a projection system includes a projection screen and an ambient light source. The projection screen reflects and/or emits one or more ranges of wavelengths of visible light. The projection screen also absorbs visible wavelengths of light in at least one other range that is not included in the one or more ranges. The ambient light source outputs visible wavelengths of light in the at least one other range. The at least one other range of wavelengths have a greater intensity as weighted by the sensitivity of a human eye than that of the wavelengths of light output by the ambient light source in the one or more ranges.
    • 描述了在投影系统中使用的环境光。 在本发明的实施例中,投影系统包括投影屏幕和环境光源。 投影屏幕反射和/或发射可见光的一个或多个波长范围。 投影屏幕还吸收不包括在一个或多个范围内的至少一个其它范围内的可见光波长。 环境光源在至少一个其它范围内输出可见光的波长。 至少一个其它波长范围具有比在一个或多个范围内由环境光源输出的光的波长的人眼的灵敏度加权的更大的强度。