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    • 7. 发明申请
    • PROJECTION DISPLAY DEVICE
    • 投影显示设备
    • US20130076995A1
    • 2013-03-28
    • US13703198
    • 2010-12-15
    • Cheng HuangLei ZhangDeming Tang
    • Cheng HuangLei ZhangDeming Tang
    • G03B21/20G02B27/26G02F1/13
    • G03B21/2073G02B27/26G02B27/283G02F1/1313G03B21/14H04N9/3167H04N9/3197H04N13/337H04N13/346H04N13/363
    • A projection display device includes a first display panel (23a), a second display panel (23b), a PBS (Polarization Beam Splitter) (22) with a first surface (22a) and a second surface (22b) opposite each other, a light recycling device (25a, 25b and 23b), and a projection lens (24). The PBS (22) transmits a first type parallel polarized light and reflects a second type parallel polarized light. The light recycling device (25a, 25b and 23b) transforms the first type parallel polarized light transmitted by the PBS (22) into the second type parallel polarized light which carries a second image information, then reversely transmits the second type parallel polarized light to the second surface (22b) of the PBS (22).The projection display device improves the light utilization efficiency and can be used for 3D display.
    • 投影显示装置包括第一显示面板(23a),第二显示面板(23b),具有第一表面(22a)的PBS(极化分束器)(22)和彼此相对的第二表面(22b) 光回收装置(25a,25b和23b)和投影透镜(24)。 PBS(22)透射第一类型的平行偏振光并反射第二类型的平行偏振光。 光回收装置(25a,25b和23b)将由PBS(22)透射的第一类型的平行偏振光变换为携带第二图像信息的第二类型的平行偏振光,然后将第二类型的平行偏振光反向传输到 PBS(22)的第二表面(22b)。投影显示装置提高了光利用效率,可用于3D显示。