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    • 89. 发明申请
    • PROJECTION DISPLAY APPARATUS AND OPTICAL FILTER
    • 投影显示设备和光学滤波器
    • US20070058137A1
    • 2007-03-15
    • US11162570
    • 2005-09-15
    • Ching-An YangShih-Min WuChi-Neng Mo
    • Ching-An YangShih-Min WuChi-Neng Mo
    • G03B21/16
    • G03B21/26
    • A projection display apparatus including a lighting system, a projection lens and a display device. The lighting system has a light source, a lens set, and an Yttrium Aluminum Garnet filter (YAG filter) is provided. The light source is suitable for providing a light beam. The lens set is disposed on the transmission path of the light beam. The YAG filter is disposed between the light source and the lens set and on the transmission path of the light beam as well. Additionally, the projection lens is disposed on the transmission path of the light beam. The display device is disposed between the lighting system and the projection lens and on the transmission path of the light beam as well. The projection apparatus having the YAG filter is benefited in dispelling the heat of the light source and optical devices, thereby extending lifetime of the light source and optical devices.
    • 一种投影显示装置,包括照明系统,投影透镜和显示装置。 照明系统具有光源,镜头组和钇铝石榴石过滤器(YAG过滤器)。 光源适用于提供光束。 透镜组设置在光束的传输路径上。 YAG滤光器也设置在光源和透镜组之间以及光束的传输路径上。 此外,投影透镜设置在光束的传输路径上。 显示装置也设置在照明系统和投影透镜之间以及光束的传输路径上。 具有YAG滤光器的投影装置有利于消除光源和光学装置的热量,从而延长光源和光学装置的寿命。