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    • 6. 发明授权
    • Projector and projection unit
    • 投影机和投影机
    • US07972009B2
    • 2011-07-05
    • US12170119
    • 2008-07-09
    • Taisuke YamauchiTakashi TakedaHidefumi Sakata
    • Taisuke YamauchiTakashi TakedaHidefumi Sakata
    • G03B21/14
    • G02B27/48G03B21/208
    • A projector includes: a light source which emits light; an image forming unit which forms an image having desired size by using light emitted from the light source; and a projection unit which projects the image formed by the image forming unit on a light receiving surface. The projection unit has a light diffusing member disposed at a position where an intermediate image corresponding to light released from the image forming unit is formed to diffuse the light, and a projection system which projects the light diffused by the light diffusing member on the light receiving surface. Diffusion intensity distribution of light released from a predetermined position of the light diffusing member contains at least two prominences with the center axis of the light interposed between the prominences.
    • 投影仪包括:发光的光源; 图像形成单元,其通过使用从所述光源发射的光形成具有期望尺寸的图像; 以及投影单元,其将由图像形成单元形成的图像投影在光接收表面上。 投影单元具有光漫射构件,其设置在与从图像形成单元释放的光对应的中间图像形成为扩散光的位置处,以及投影系统,其使由光漫射构件漫射的光在光接收 表面。 从光扩散构件的预定位置释放的光的扩散强度分布包含至少两个突起,其中心轴插入突出部之间。