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Optical filter employing holographic optical elements and image generating system incorporating the optical filter
Optical filter employing holographic optical elements and image generating system incorporating the optical filter
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机译:使用全息光学元件的滤光器和包含该滤光器的图像生成系统
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摘要
The present invention relates to a solid state filter used in sequentially illuminating an image display, directly or indirectly, with first, second, and third bandwidth light. The solid state filter includes at least one hologram that is switchable between active and inactive states. While in the active state, the at least one switchable hologram diffracts a first bandwidth light. In contrast, the switchable hologram transmits the first bandwidth light without substantial alteration when operating in the inactive state. In one embodiment, the diffracted first bandwidth light is used to illuminate a monochrome image presented on a display device. In another embodiment, the transmitted first bandwidth light is used to illuminate the monochrome image presented on the image display.
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