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    • 64. 发明授权
    • Apparatus for uniformly illuminating a light valve
    • 用于均匀照明光阀的装置
    • US06332688B1
    • 2001-12-25
    • US08441267
    • 1995-05-15
    • Simon Magarill
    • Simon Magarill
    • G02B510
    • G02B27/0994G02B5/10G02B6/4298G02B17/00G02B27/09G02B27/1046G02B27/145G02F1/133605H04N9/315
    • A light energy efficient and low cost optical system for providing uniform illumination of a light valve. The light source is an extended source generally emitting a non-uniform spatial distribution of light power. The source light is focused into the entrance end of a light transmitting tunnel having reflecting interior wall surfaces and having cross sectional and length dimensions chosen to deliver, at the exit end of the tunnel, light which is substantially uniform is power distribution, over the surface area of the exit end, due multiple reflections from the tunnel walls. The exiting light is advantageously used to uniformly illuminate a light valve. The invention includes a combination of mirrors arranged about the source light to most effectively collect and direct the light.
    • 一种光能高效且低成本的光学系统,用于提供光阀的均匀照明。 光源是通常发出光功率的不均匀空间分布的扩展源。 源光聚焦到具有反射内壁表面的透光隧道的入口端,并且具有横截面和长度尺寸,其被选择为在隧道的出口端处传递在表面上大致均匀的光(功率分布) 出口端的区域,来自隧道墙的多次反射。 出射光有利地用于均匀地照亮光阀。 本发明包括围绕源光设置的反射镜的组合,以最有效地收集和引导光。