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    • 4. 发明授权
    • Projection optical system and projector including the same
    • 投影光学系统和投影机包括相同
    • US08801197B2
    • 2014-08-12
    • US13523390
    • 2012-06-14
    • Eiji MorikuniMakoto Otani
    • Eiji MorikuniMakoto Otani
    • G03B21/00G03B21/14G02B3/02G02B13/08G02B13/18G02B13/12G02B13/16G03B33/12
    • G02B13/12G02B13/16G03B21/142G03B33/12
    • A projection optical system which, when projecting an image of an optical modulator onto a projection surface on an enlarged scale, differs the aspect ratio of the image of the optical modulator and the aspect ratio of the image projected onto the projection surface, and includes, in order from the projection surface, a first group which is an enlargement optical system; a second group includes an adjustment optical component with a surface rotationally asymmetrical to an optical axis, when defining at least one direction of the vertical direction and the horizontal direction of the optical modulator as an adjustment direction in which conversion adjustment using compression or extension is performed, the adjustment optical component having at least one optical system which differs in power between the adjustment direction and another direction; and a third group which has a correction optical component with a surface rotationally symmetrical to the optical axis.
    • 一种投影光学系统,当将光学调制器的图像以放大的尺度投射到投影表面上时,将光学调制器的图像的纵横比和投影到投影表面上的图像的纵横比不同, 从投影表面依次排列第一组,其是放大光学系统; 当将光学调制器的垂直方向和水平方向的至少一个方向定义为使用压缩或扩展进行转换调整的调整方向时,第二组包括具有与光轴旋转不对称的表面的调节光学部件 所述调整光学部件具有至少一个在所述调整方向与另一方向之间的功率不同的光学系统; 以及具有具有与光轴旋转对称的表面的校正光学部件的第三组。