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1. 发明授权

US5576854A Liquid crystal light valve projector with improved contrast ratio and with 0.27 wavelength compensation for birefringence in the liquid crystal light valve 失效
标题翻译：液晶光阀投影机具有改善的对比度和0.27波长补偿双折射液晶光阀
公开(公告)号：US5576854A
公开(公告)日：1996-11-19
申请号：US152996
申请日：1993-11-12
申请人： Jack H. Schmidt , Ned Nestorovic , Rodney D. Sterling , Joseph M. Haggerty , Javier A. Ruiz , Robert Edwards , Roger Hollister
发明人： Jack H. Schmidt , Ned Nestorovic , Rodney D. Sterling , Joseph M. Haggerty , Javier A. Ruiz , Robert Edwards , Roger Hollister
IPC分类号： G02F1/13 , G02F1/133 , G02F1/1333 , G02F1/1335 , G02F1/13363 , G02F1/135 , G03B21/00
CPC分类号： G02F1/133385 , G02F1/1333 , G02F1/133528 , G02F1/135 , G02F2001/133638
摘要： In a liquid crystal light valve projector, a quarter-wave compensator plate is disposed between a polarization plate and a liquid crystal light valve to compensate for polarization irregularities induced by the off-incident reflections in the cone of light projected onto the LCLV. The quarter-wave compensation plate reverses the phase of the P component of said illumination light with respect to said compensator plate by 180.degree. thereby eliminating P-polarization leakage during the dark state of an LCLV projector. The invention also combines the compensator plate with a heat shield and a low stress-optical coefficient counter electrode substrate to reduce the birefringence of the LCLV thereby also minimizing leakage of P-polarized light onto the projection screen during the dark state of the projector.
摘要翻译：在液晶光阀投影机中，在偏振板和液晶光阀之间设置四分之一波长的补偿板，以补偿投射到LCLV上的光的入射反射引起的偏振不均匀。四分之一波长补偿板将所述照明光的P分量相对于所述补偿板的相位反转180度，从而消除LCLV投影仪暗处的P极化泄漏。本发明还将补偿板与隔热板和低应力光学系数对电极基板结合起来，以减少LCLV的双折射，从而也可以在投影机的黑暗状态期间最小化P偏振光到投影屏幕上的泄漏。

2. 发明授权

US5179425A Hand held paint inspection meter 失效
标题翻译：手持油漆检验仪
公开(公告)号：US5179425A
公开(公告)日：1993-01-12
申请号：US741383
申请日：1991-08-07
申请人： Stephen J. Reinsch , Joseph M. Haggerty
发明人： Stephen J. Reinsch , Joseph M. Haggerty
IPC分类号： G01B11/30
CPC分类号： G01B11/303
摘要： A hand held instrument for measuring roughness of a surface, such as the "orange peel" on a painted surface, employs a scanning disc (42) which mounts a light source (56) to project a light beam at the surface being measured in a circular scan pattern. Light reflected from the surface is received by a sensor (90) which produces an output electrical signal having an amplitude and frequency that follow the amplitude and frequency of reflected light received by the sensor. Electrical signals representing amplitude and frequency are suitably combined (134) to provide an output display (114) that reads the value of orange peel according to a set of values determined by calibration of the instrument from a set of calibration panels.
摘要翻译：用于测量表面粗糙度（例如涂漆表面上的“橙皮”）的手持式仪器使用扫描盘（42），其安装光源（56）以将光束投射在被测量的表面上循环扫描图案。从表面反射的光被传感器（90）接收，传感器（90）产生具有跟随由传感器接收的反射光的振幅和频率的幅度和频率的输出电信号。表示幅度和频率的电信号被适当地组合（134）以提供输出显示器（114），其根据通过一组校准面板校准仪器确定的一组值来读取橙皮的值。

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