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    • 1. 发明授权
    • Illumination system to eliminate laser speckle and projection system employing the same
    • 照明系统消除激光散斑和投影系统的采用
    • US07527384B2
    • 2009-05-05
    • US11257018
    • 2005-10-25
    • Sung-ha KimSang-whoe Dho
    • Sung-ha KimSang-whoe Dho
    • G03B21/14
    • H04N9/3161G02B5/1866G02B5/32G02B27/0944G02B27/0994G02B27/48G03B21/005G03H2227/03H04N9/3152
    • An illumination system designed to remove laser speckle and a projection system including the same. The illumination system includes a laser light source having at least one laser, a diffractive optical element to divide a laser beam emitted from the laser light source into a plurality of sub-beams and to periodically move in such a way as to temporally average the speckle of the laser beam, and an optical fiber bundle including a plurality of fibers with the same length to divide the sub-beams into smaller sub-beams. The illumination system divides the laser beam emitted from the laser light source into sub-beams and temporally or spatially averages the sub-beams, thereby effectively reducing or removing laser speckle. The projection system employing the illumination system can provide improved image quality.
    • 设计用于去除激光散斑的照明系统和包括其的投影系统。 该照明系统包括具有至少一个激光的激光光源,衍射光学元件,用于将从激光光源发射的激光束分割成多个子光束,并周期性地移动,以便在时间上平均斑点 以及包括具有相同长度的多根光纤的光纤束,以将子光束分成更小的子光束。 照明系统将从激光光源发射的激光束分成子光束,并在时间上或空间上平均子光束,从而有效地减少或去除激光散斑。 采用照明系统的投影系统可以提供改进的图像质量。
    • 9. 发明授权
    • Color illuminating system and projection type image display apparatus using the same
    • 彩色照明系统和使用其的投影型图像显示装置
    • US07119964B2
    • 2006-10-10
    • US10764488
    • 2004-01-27
    • Dae-sik KimKun-ho ChoSung-ha KimHee-Joong Lee
    • Dae-sik KimKun-ho ChoSung-ha KimHee-Joong Lee
    • G02B27/10
    • H04N9/3117
    • A high-efficiency, compact color illuminating system and a projection type image display apparatus using the color illuminating system are provided. The color illuminating system includes a light source, a spiral lens disc that periodically scrolls light by rotational movement, and an optical unit that isolates light beams of different wavelengths from white light emitted from the light source and guides the isolated light beams to enter at least two effective regions of the spiral lens disc. The projection type image display apparatus includes the color illuminating system, an image forming unit that generates images using scrolling light from the spiral lens disc, and a projection lens unit that enlarges and projects the images formed by the image forming unit on a screen.
    • 提供了一种高效,紧凑的彩色照明系统和使用彩色照明系统的投影型图像显示装置。 彩色照明系统包括光源,通过旋转运动周期性地滚动光的螺旋透镜盘;以及光学单元,其将不同波长的光束与从光源发射的白光隔离,并引导隔离光束至少进入 螺旋透镜盘的两个有效区域。 投影型图像显示装置包括彩色照明系统,使用来自螺旋透镜盘的滚动光生成图像的图像形成单元,以及投影透镜单元,其将由图像形成单元形成的图像放大并投射到屏幕上。