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    • 3. 发明申请
    • OFF-STATE LIGHT BAFFLE FOR DIGITAL PROJECTION
    • 用于数字投影的非状态光源
    • WO2011137136A1
    • 2011-11-03
    • PCT/US2011/034025
    • 2011-04-27
    • EASTMAN KODAK COMPANYCOLEMAN, Jesse, J.MAZZARELLA, JamesKIRCHER, James, Robert
    • COLEMAN, Jesse, J.MAZZARELLA, JamesKIRCHER, James, Robert
    • G03B21/16
    • G03B21/16G02B5/003G02B26/0833G03B21/008G03B21/28H04N9/3144
    • A light modulation assembly for a digital projection apparatus comprising: a solid-state light source that provides an illumination beam(18); a spatial light modulator (60) having a plurality of tiltable micro-mirrors (66), each micro-mirror being actuable to tilt with respect to a tilt axis between a first tilt position (64) that provides on- state light and a second tilt position (65) that provides off-state light, and wherein the micro-mirrors deflect the illumination beam along an arced path defining a deflection plane (67) as they are tilted between the first tilt position and the second tilt position; and a light baffle (30) disposed alongside the optical axis(0) and in the path of the off -state light (23) from the micro-mirrors, the light baffle having a light - trapping surface (54) adapted to absorb the off -state light from the micro -mirrors on the spatial light modulator, the light - trapping surface having a plurality of protruding fins (32) that extend outward from the light - trapping surface at an oblique angle.
    • 一种用于数字投影装置的光调制组件,包括:提供照明光束(18)的固态光源; 具有多个可倾斜微反射镜(66)的空间光调制器(60),每个微镜可致动以相对于在提供状态光的第一倾斜位置(64)和第二倾斜位置(64)之间的倾斜轴线倾斜 提供关闭状态光的倾斜位置(65),并且其中当所述照射光束在所述第一倾斜位置和所述第二倾斜位置之间倾斜时,所述微反射镜沿着限定偏转平面(67)的弧形路径使所述照明光束偏转; 以及沿着所述光轴(0)并且在离开所述微反射镜的偏态光(23)的路径中设置的光挡板(30),所述光挡板具有光捕获表面(54),所述光捕获表面适于吸收 来自空间光调制器上的微观镜的偏态光,光捕获表面具有多个突出的翅片(32),其以倾斜角从遮光表面向外延伸。