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    • 22. 发明授权
    • Projector
    • 投影机
    • US06529250B1
    • 2003-03-04
    • US09082534
    • 1998-05-21
    • Osamu MurakamiAkitaka YajimaYoshitaka Itoh
    • Osamu MurakamiAkitaka YajimaYoshitaka Itoh
    • G02F11335
    • G02B27/149G02B27/1046G02B27/145G02F1/133536
    • A projection-type display apparatus of the invention aiming at solving the problem of heat generation caused by absorption of light by a polarizing means of a liquid crystal light valve. To overcome this problem, the projection-type display apparatus of the invention includes a light source, a light valve for modulating the light from the light source, and a projection optical means for projecting the light modulated by the light valve, with the light valve including a liquid crystal panel and a polarizing means, provided on the light source side of the liquid crystal panel, and the polarizing means being formed of a multi-layered film which primarily transmits one of two types of polarization axis component light beams and primarily reflects the other of the two types of polarization axis component light beams.
    • 本发明的投影式显示装置旨在解决由液晶光阀的偏振装置吸收光引起的发热问题。 为了克服这个问题,本发明的投影型显示装置包括光源,用于调制来自光源的光的光阀和用于将由光阀调制的光投射的投影光学装置,光阀 包括设置在液晶面板的光源侧的液晶面板和偏振装置,并且偏振装置由多层膜形成,该多层膜主要透射两种类型的偏振轴分量光束中的一种,并主要反射 两种类型的偏振轴分量光束中的另一种。