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Method and apparatus for increasing illuminator brightness in a liquid crystal on silicon (LCoS) based video projection system
Method and apparatus for increasing illuminator brightness in a liquid crystal on silicon (LCoS) based video projection system
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机译:用于增加基于硅基液晶(LCoS)的视频投影系统中的照明器亮度的方法和设备
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摘要
Ultra Violet (UV) light produced by a light source is converted to visible light and utilized in a visible light output of the light source. The light source is, for example, a light source in an illuminator of a projection device. UV light that is typically filtered out of the illuminator is converted by a UV absorbing visible light radiating phosphor. The UV light is directed to the phosphor by, for example, reflecting the UV light out of a light path, concentrating the UV light via a concave reflector, and directing the UV light to the phosphor. The re-radiated visible light is then injected back into the light path of the light source. In one embodiment, the re-radiated visible light is injected into a “shadow” of the light path.
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