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    • 1. 发明申请
    • Optical engine and an image projector having the optical engine
    • 光学引擎和具有光学引擎的图像投影仪
    • US20060078266A1
    • 2006-04-13
    • US11188183
    • 2005-07-22
    • Chao WuYuan WangJui Pan
    • Chao WuYuan WangJui Pan
    • G02B6/10
    • G02B27/0927G02B27/0994H04N9/315
    • An optical engine for an image projector comprises a light source, a taper rod, at least one light condenser, a prism module, a Digital Micromirror Device (DMD) and a projection lens set. One end of the taper rod is adjacent to the light source. Light generated by the light source is guided by the taper rod following a light path. The taper rod has increasing sizes of cross-sections along the light path, so as to decrease the dispersion angle of light, make the light more uniform, and increase the brightness of light. The prism module includes a first prism having a right triangle cross-section and a second prism having a wedge cross-section. The prism module receives the light from the condenser, passes the light toward the DMD, receives the light reflected by the DMD, and then passes the reflected light toward the projection lens set. The projection lens set projects the light on an external projection plane.
    • 用于图像投影仪的光学引擎包括光源,锥形杆,至少一个光聚光器,棱镜模块,数字微镜器件(DMD)和投影透镜组。 锥形杆的一端与光源相邻。 由光源产生的光由沿着光路的锥形杆引导。 锥形杆具有沿着光路的横截面增大的尺寸,以减小光的色散角,使光线更均匀,并增加光的亮度。 棱镜模块包括具有直角三角形横截面的第一棱镜和具有楔形横截面的第二棱镜。 棱镜模块接收来自聚光器的光,将光朝向DMD传递,接收由DMD反射的光,然后使反射光朝向投影透镜组。 投影透镜组将光投射到外部投影平面上。