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    • 5. 发明授权
    • Optical feedback system with improved accuracy
    • 光学反馈系统,精度提高
    • US07482567B2
    • 2009-01-27
    • US11575515
    • 2005-08-18
    • Christoph Gerard August HoelenJohannes Petrus Maria AnsemsEdwin Van Lier
    • Christoph Gerard August HoelenJohannes Petrus Maria AnsemsEdwin Van Lier
    • G01J1/32H01J3/14
    • G01J1/04F21K9/62F21V23/0457F21Y2113/13F21Y2115/10G01J1/0407G01J1/32G01J3/505G01J3/513G01J2001/4247H01L25/0753H01L25/167H01L2924/0002H01L2924/00
    • The illumination system has a plurality of light emitters (R, G, B) and a light-collimator (1) for collimating light emitted by the light emitters. Light propagation in the light-collimator is based on total internal reflection (TIR) towards a light-exit window (4) of the light-collimator. At least one light sensor (8) for optical feedback is placed outside the light-collimator and is arranged to receive light emitted by the light emitters exclusively through reflection at the light-exit window of the light-collimator. Preferably, the light sensor is placed substantially coplanar with the light emitters. Preferably, a side wall (35) of the light-collimator is provided with a protruding portion (9) for guiding the light reflected at the light-exit window of the light-collimator towards the light sensor. Preferably, the illumination system is provided with a reflector (12). Preferably, the illumination system comprises a holographic diffuser (17). Accurate sensing of the color mixing of light emitted by the illumination system is obtained.
    • 照明系统具有多个发光体(R,G,B)和用于准直由发光体发射的光的光准直器(1)。 在光准直仪中的光传播基于朝向光准直仪的光出射窗(4)的全内反射(TIR)。 用于光学反馈的至少一个光传感器(8)被放置在光准直器外部,并且被布置成仅通过光准直器的光出射窗处的反射来接收由发光体发射的光。 优选地,光传感器被放置成与发光体基本上共面。 优选地,光准直仪的侧壁(35)设置有用于将在光准直器的光出射窗处反射的光朝向光传感器引导的突出部分(9)。 优选地,照明系统设置有反射器(12)。 优选地,照明系统包括全息漫射器(17)。 获得由照明系统发射的光的颜色混合的精确感测。
    • 8. 发明申请
    • Illumination System
    • 照明系统
    • US20080093530A1
    • 2008-04-24
    • US11575515
    • 2005-08-18
    • Christoph HoelenJohannes AnsemsEdwin Van Lier
    • Christoph HoelenJohannes AnsemsEdwin Van Lier
    • G01J1/00H01L33/00H01L25/075
    • G01J1/04F21K9/62F21V23/0457F21Y2113/13F21Y2115/10G01J1/0407G01J1/32G01J3/505G01J3/513G01J2001/4247H01L25/0753H01L25/167H01L2924/0002H01L2924/00
    • The illumination system has a plurality of light emitters (R, G, B) and a light collimator (1) for collimating light emitted by the light emitters. Light propagation in the light-collimator is based on total internal reflection (TIR) towards a light-exit window (4) of the light-collimator. At least one light sensor (8) for optical feedback is placed outside the light-collimator and is arranged to receive light emitted by the light emitters exclusively through reflection at the light-exit window of the light-collimator. Preferably, the light sensor is placed substantially coplanar with the light emitters. Preferably, a side wall (35) of the light-collimator is provided with a protruding portion (9) for guiding the light reflected at the light-exit window of the light-collimator towards the light sensor. Preferably, the illumination system is provided with a reflector (12). Preferably, the illumination system comprises a holographic diffuser (17). Accurate sensing of the color mixing of light emitted by the illumination system is obtained.
    • 照明系统具有多个发光体(R,G,B)和用于准直由发光体发射的光的光准直器(1)。 在光准直仪中的光传播基于朝向光准直仪的光出射窗(4)的全内反射(TIR)。 用于光学反馈的至少一个光传感器(8)被放置在光准直器外部,并且被布置成仅通过光准直器的光出射窗处的反射来接收由发光体发射的光。 优选地,光传感器被放置成与发光体基本上共面。 优选地,光准直仪的侧壁(35)设置有用于将在光准直器的光出射窗处反射的光朝向光传感器引导的突出部分(9)。 优选地,照明系统设置有反射器(12)。 优选地,照明系统包括全息漫射器(17)。 获得由照明系统发射的光的颜色混合的精确感测。