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    • 10. 发明申请
    • Color Mixing Rod Integrator in a Laser-Based Projector
    • 彩色混合杆积分器在基于激光的投影机
    • US20080278691A1
    • 2008-11-13
    • US12097291
    • 2006-12-13
    • Oscar Hendrikus WillemsenMarcellinus Petrus Carolus Michael Krijn
    • Oscar Hendrikus WillemsenMarcellinus Petrus Carolus Michael Krijn
    • G02B27/48G02B27/09G03B21/14
    • G02B27/0994G02B27/1006G02B27/102G03B21/2066G03B21/208G03B33/12
    • The present invention provides a system (150) (160), apparatus (100) (200) and method to exploit the high beam quality of a laser light source to lower the cost and decrease the size of a color sequentially operated and laser based projector. Using a color mixing rod integrator (100) (200) (500) (550), laser light is homogenized, thus supplying the proper illumination pattern to a spatial light modulator. The rod integrator is also used to recombine the light of the primary colors, thus obviating dichroic recombination optics. For this purpose all light is coupled into the entrance plane of one and the same color mixing rod integrator. In this way a low cost and compact illumination system is obtained. By adding extra reflective layers to entrance (101) (201) and exit faces (105) of the integrator, the length of the integrator is decreased and/or the F/# in the system is increased. This enables a truly portable projector. When applying a color mixing rod integrator according to the present invention in a light engine with a reflective spatial light modulator, the integrator is very well suited for light recycling, which can increase an image's brightness up to a factor of three at average video display load.
    • 本发明提供一种系统(150)(160),设备(100)(200)和方法,利用激光光源的高光束质量来降低成本并降低颜色顺序操作的尺寸和基于激光的投影仪 。 使用混色棒积分器(100)(200)(500)(550),将激光均匀化,从而将适当的照明图案提供给空间光调制器。 棒状积分器也用于重新组合原色光,从而消除二色重组光学。 为此,所有的光都耦合到同一个颜色混合杆积分器的入射面上。 以这种方式获得了低成本和紧凑的照明系统。 通过向积分器的入口(101)(201)和出射面(105)添加额外的反射层,积分器的长度减小和/或系统中的F /#增加。 这使得真正便携式的投影机。 当根据本发明的混色杆积分器在具有反射空间光调制器的光引擎中应用时,积分器非常适合于光循环,其可以在平均视频显示负载下将图像的亮度提高到三倍 。