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    • 1. 发明申请
    • PEAK BRIGHTNESS IMPROVEMENT FOR SPATIAL LIGHT MODULATOR BASED TELEVISION REAR PROJECTOR
    • 基于空调光调制器的电视后期投影机的亮度亮度改进
    • WO2003101095A1
    • 2003-12-04
    • PCT/US2003/011553
    • 2003-04-16
    • THOMSON LICENSING S. A.DRAZIC, ValterO'DONNELL, Eugene, Murphy
    • DRAZIC, ValterO'DONNELL, Eugene, Murphy
    • H04N5/74
    • H04N9/315H04N5/74H04N9/3141
    • A method and apparatus for producing an apparent increase in display brightness in an RPTV engine without an actual increase in total light output. Light is generated with an illumination source and optically processed to produce a light beam (100 or 200) of rectangular format. The light beam is formed intentionally to have an intensity that is non-uniform, varying from a peak intensity at a center (102 or 202) of the beam to a minimum intensity at a periphery (104) of the beam. The optical processing step can include varying the intensity to selectively produce an illumination profile that decreases by at least about 30% to 70% from the peak intensity to the minimum intensity. The optical processing step can further include projecting the light beam through an integrator (308) that is configured to produce an illumination profile that is at least partially controlled by a length of the integrator. The integrator can be configured so that a decrease in length will result in reduced uniformity.
    • 用于在没有实际增加总光输出的情况下产生RPTV引擎中的显示亮度明显增加的方法和装置。 用照明源产生光并进行光学处理以产生矩形格式的光束(100或200)。 光束被有意地形成为具有不均匀的强度,从光束的中心(102或202)处的峰值强度变化到在光束的周边(104)处的最小强度。 光学处理步骤可以包括改变强度以选择性地产生从峰值强度至最小强度降低至少约30%至70%的照度分布。 光学处理步骤还可以包括将光束投影通过积分器(308),该积分器被配置为产生至少部分地由积分器的长度控制的照明轮廓。 积分器可以被配置为使得长度的减小将导致均匀性的降低。
    • 2. 发明申请
    • STEREOSCOPIC LIGHT ENGINE ARCHITECTURE
    • 立体光源发动机结构
    • WO2003065737A2
    • 2003-08-07
    • PCT/US2003/002244
    • 2003-01-27
    • THOMSON LICENSING S. A.O'DONNELL, Eugene, MurphyDRAZIC, ValterHOFFMAN, Brent, WilliamHALL, Estill, Thone, Jr.
    • O'DONNELL, Eugene, MurphyDRAZIC, ValterHOFFMAN, Brent, WilliamHALL, Estill, Thone, Jr.
    • H04N13/00
    • H04N13/398H04N13/324H04N13/334H04N13/337H04N13/341H04N13/363H04N13/365
    • A liquid crystal display projection system for pictures that can be viewed stereoscopically, comprising: a source of a repetitive three color sequence of light (13); first and second imagers (20, 22) responsive to respective drive signals representative of the same picture from different angles of view; at least a first polarizing beam splitter (14) for separating said repetitive three-color sequence of light into a P polarized three color sequence of light and an S polarized three color sequence of light, said S polarized three color sequence of light illuminating said first imager and said P polarized three color sequence of light illuminating said second imager; a first filter (26) for removing P polarized light directed to said first imager; and, a second filter (24) for removing P polarized light reflected from said second imager, wherein said light reflected from said first imager and said light filtered by said second filter form a stereoscopic image when viewed through respective P and S polarizing lenses (70, 80).
    • 一种用于可以立体观看的图片的液晶显示投影系统,包括:重复的三色光序列的源(13); 第一和第二成像器(20,22)响应于来自不同视角的表示相同图像的各个驱动信号; 至少一个用于将所述重复的三色光序列分离为P偏振三色光序列和S偏振三色光序列的第一偏振分束器(14),所述S偏振三色光序列照亮所述第一 成像仪和P偏光三色顺序的光照射第二个成像器; 用于去除指向所述第一成像器的P偏振光的第一滤光器(26); 以及用于去除从所述第二成像器反射的P偏振光的第二滤光器(24),其中从所述第一成像器反射的所述光和由所述第二滤光器滤波的所述光通过相应的P和S偏振透镜(70)观察时形成立体图像 ,80)。
    • 5. 发明申请
    • POLARIZATION RECYCLER
    • 偏振循环仪
    • WO2003052489A1
    • 2003-06-26
    • PCT/US2002/037166
    • 2002-11-19
    • THOMSON LICENSING S. A.DRAZIC, ValterHALL, Estill, Thone, Jr.O'DONNELL, Eugene, Murphy
    • DRAZIC, ValterHALL, Estill, Thone, Jr.O'DONNELL, Eugene, Murphy
    • G02B27/28
    • G02B27/286G02B27/0927G02B27/0994G02F1/13362
    • A method for recovering polarization comprises the steps of: guiding light having first and second polarizations in a forward direction along a light path (27); passing the guided light having the first polarization out of the path; reflecting the light having the second polarization backwardly and forwardly along the light path; transforming the reflected light during the reflecting step to have the first polarization; and, passing the light transformed to the first polarization out of the path, enabling more of the light having the first polarization to be passed out of the path. The method can be implemented with a light integrator (20), a reflecting polarizer (30), at least one reflective surface (26) that further reflects the reflected light back toward the reflecting polarizer and a quarter wave plate (32) positioned in the light path. The method and apparatus can be used in an illumination system (10) for a liquid crystal display imager (24).
    • 用于恢复偏振的方法包括以下步骤:沿着光路(27)沿正向引导具有第一和第二偏振的光; 将具有第一偏振的引导光路径通过; 沿光路向后和向前反射具有第二偏振的光; 在反射步骤期间变换反射光以具有第一极化; 并且将转换成第一偏振的光通过路径,使得具有第一偏振的更多的光能够通过路径。 该方法可以用光积分器(20),反射偏振器(30),至少一个反射表面(26)来实现,所述反射表面进一步将反射光反射回反射偏振器,并且四分之一波片(32)位于 光路。 该方法和装置可用于液晶显示成像器(24)的照明系统(10)中。