Image Display Apparatus and Projection Optical System
    44.
    发明申请
    Image Display Apparatus and Projection Optical System 有权
    图像显示装置和投影光学系统

    公开(公告)号:US20070268541A1

    公开(公告)日:2007-11-22

    申请号:US11579327

    申请日:2005-05-11

    IPC分类号: G02B26/08

    摘要: An image display apparatus acquires a high-quality image by suppressing positional fluctuation of projected dots due to a positional offset of an optical path deflecting element. A spatial light modulation element (1) displays an image by projecting a light from an illumination light source. A projection optical system (3) enlarges and projects the image formed on the spatial light modulation element (1). An optical path deflecting element (2) is provided between the spatial light modulation element (1) and the image formed on a screen (4) so as to deflect an optical path in accordance with a screen frame period. The optical path deflecting element (2) shifts the optical path for the image projected on the screen (4) at a high rate so as to apparently increase a number of picture elements. The optical path deflecting element (2) is located within the projection optical system.

    摘要翻译: 图像显示装置通过抑制由于光路偏转元件的位置偏移引起的投影点的位置变动而获取高质量图像。 空间光调制元件(1)通过投射来自照明光源的光来显示图像。 投影光学系统(3)放大并投影形成在空间光调制元件(1)上的图像。 光路偏转元件(2)设置在空间光调制元件(1)和形成在屏幕(4)上的图像之间,以便根据屏幕帧周期偏转光路。 光路偏转元件(2)以高速率移动投影在屏幕(4)上的图像的光路,从而显着增加像素的数量。 光路偏转元件(2)位于投影光学系统内。

    Image display apparatus and alternative current drive method
    46.
    发明申请
    Image display apparatus and alternative current drive method 有权
    图像显示装置和替代电流驱动方法

    公开(公告)号:US20050168455A1

    公开(公告)日:2005-08-04

    申请号:US11043259

    申请日:2005-01-27

    摘要: A reliable image display apparatus is provided that is capable of preventing a direct current from being applied to liquid crystal of a spatial light modulating element so that damage such as burns in the liquid crystal and screen flicker may be prevented and a high resolution image with high image quality may be displayed. The image display apparatus is configured to divide a frame into 2i sub frames (i corresponding to a natural number) and sequentially display the sub frames using the liquid crystal spatial light modulating element. The image display apparatus includes a polarity switching unit configured to reverse the polarity of a drive voltage for a pixel of the spatial light modulating element for every j sub frame(s) (j corresponding to a natural number that is less than 2i) and for every n frame(s)(n corresponding to a natural number).

    摘要翻译: 提供了一种可靠的图像显示装置,其能够防止直流电流被施加到空间光调制元件的液晶,使得可以防止诸如液晶中的燃烧和屏幕闪烁的损坏和高分辨率图像 可能会显示图像质量。 图像显示装置被配置为将帧划分成2i个子帧(i对应于自然数),并且使用液晶空间光调制元件顺序地显示子帧。 图像显示装置包括:极性切换单元,被配置为对于每个j个子帧(对应于小于2i的自然数),反转空间光调制元件的像素的驱动电压的极性,并且为 每n帧(n对应于自然数)。

    Optical scanning device and image forming device
    50.
    发明授权
    Optical scanning device and image forming device 有权
    光学扫描装置及成像装置

    公开(公告)号:US08559053B2

    公开(公告)日:2013-10-15

    申请号:US13053762

    申请日:2011-03-22

    IPC分类号: G06K15/12

    摘要: An optical scanning device includes a light source that emits first and second light beams, and an optical splitter to which the first and second light beams deflected by an optical deflector are incident. Principal rays of the first and second light beams incident to the optical splitter are nonparallel to each other in a plane orthogonal to a main-scanning direction. Transmitted light from the optical splitter out of the first light beam and reflected light from the optical splitter out of the second light beam are guided to corresponding scanning target surfaces, and transmitted light from the optical splitter out of the second light beam and reflected light from the optical splitter out of the first light beam reach none of the scanning target surfaces.

    摘要翻译: 光学扫描装置包括发射第一和第二光束的光源和由光学偏转器偏转的第一和第二光束入射的光分路器。 入射到分光器的第一和第二光束的主光线在与主扫描方向正交的平面中彼此不平行。 来自第一光束的分光器的透射光和来自第二光束的光分路器的反射光被引导到相应的扫描目标表面,并且将来自光分路器的光从第二光束和第二光束中反射出来 第一光束中的分光器不到达扫描目标表面。