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    • 9. 发明授权
    • Color filter unit and projection system employing the same
    • 彩色滤光片单元及采用该滤光片的投影系统
    • US07393106B2
    • 2008-07-01
    • US10928112
    • 2004-08-30
    • Sung-ha KimDong-ha KimJu-seong Hwang
    • Sung-ha KimDong-ha KimJu-seong Hwang
    • G03B21/14
    • H04N9/3117
    • A color filter unit and a projection system employing the same. The color filter unit includes a first color selection polarization conversion element, which converts a polarization direction of a beam in a specific color band of an incident light, and a color filter, which separates light passed through the first color selection polarization conversion element according to color, so that color mixture in spectral boundaries between color beams is prevented. Because the color mixture occurring when beams into which light emitted from a white light source is separated are combined is prevented, the quality of an image is improved.
    • 滤色器单元和采用该滤色器单元的投影系统。 滤色器单元包括:第一颜色选择偏振转换元件,其转换入射光的特定色带中的光束的偏振方向;以及滤色器,其分离通过第一颜色选择偏振转换元件的光,根据 颜色,使得防止颜色束之间的光谱边界中的颜色混合。 由于防止从白色光源发出的光分离的光束被组合时出现混色,所以提高了图像的质量。
    • 10. 发明申请
    • Projection system and method for reducing optical noise in projection system
    • 投影系统中减少光学噪声的投影系统及方法
    • US20070126987A1
    • 2007-06-07
    • US11633573
    • 2006-12-05
    • Ju-seong Hwang
    • Ju-seong Hwang
    • G03B21/14
    • G03B33/12G03B21/2073G03B21/208
    • A projection system and method for reducing noise in the projection system are provided comprising a light source unit, an illuminator for collecting light supplied from the light source unit, a diffraction device for receiving light from the illuminator and recognizes an image, a projection lens for projecting the image recognized by the diffraction device, and a screen for displaying the projected image. The light source unit comprises a plurality of light sources for supplying light in different colors, and the illuminator comprises a light synthesizing unit for synthesizing light supplied from the light source unit, a polarization divider for reflecting one polarized light of the synthesized light and transmitting the other polarized light perpendicular to the reflected light, and a phase difference slit disposed between the polarization divider and the diffraction device. Thus, a small-sized projection system is provided which lowers optical noise.
    • 提供一种用于降低投影系统中的噪声的投影系统和方法,包括:光源单元,用于收集从光源单元提供的光的照明器;用于接收来自照明器的光并识别图像的衍射装置,用于识别图像的投影透镜; 投影由衍射装置识别的图像,以及用于显示投影图像的屏幕。 光源单元包括用于提供不同颜色的光的多个光源,并且照明器包括用于合成从光源单元提供的光的光合成单元,用于反射合成光的一个偏振光的偏振分隔器, 垂直于反射光的其他偏振光,以及设置在偏振分束器和衍射装置之间的相位差狭缝。 因此,提供了降低光学噪声的小尺寸投影系统。