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公开(公告)号：US08094270B2
公开(公告)日：2012-01-10
申请号：US11564500
申请日：2006-11-29
IPC分类号： G02F1/1335 , G02F1/13
CPC分类号： H04N9/3167 , G02B1/115 , G02B5/3083 , G03B21/14 , G03B21/2073 , G03B33/12 , H04N9/3105
摘要： An oblique angle deposition is used to provide an A-plate optical retarder having at least one dense, form-birefringent layer. According to one embodiment, the dense, form-birefringent layer(s) are deposited as part of an FBAR stack to provide an all-dielectric full-function A/−C-plate trim retarder for LCD birefringence compensation. Advantageously, the dense structure of the full-function A/−C-plate trim retarder offers high durability and/or stability, thus making it well suited for providing polarization compensation in high light flux polarization-based projection systems.
摘要翻译： 使用斜角沉积来提供具有至少一个致密的双折射层的A板光学延迟器。 根据一个实施例，致密的成形双折射层作为FBAR堆叠的一部分沉积，以提供用于LCD双折射补偿的全介质全功能A / -C板修整延迟器。 有利地，全功能A / -C板微调延迟器的致密结构提供高耐久性和/或稳定性，因此使其非常适合于在高光通量极化基投影系统中提供偏振补偿。
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公开(公告)号：US06844975B2
公开(公告)日：2005-01-18
申请号：US10267231
申请日：2002-10-09
CPC分类号： G02B5/281 , G01J3/26 , G02B6/29358 , G02B6/29395
摘要： The invention provides a substantially athermal etalon. In one embodiment, the multi-cavity etalon includes at least one free-standing multi-layer thin film and is rendered thermally stable through the use of the free-standing multi-layer film and spacers having predetermined thermal expansion coefficients. In another embodiment, the multi-cavity etalon is rendered thermally stable through the use of mixed spacers.
摘要翻译： 本发明提供了基本上无热的标准具。 在一个实施例中，多空腔标准具包括至少一个独立的多层薄膜，并且通过使用具有预定热膨胀系数的独立的多层膜和间隔物而使其热稳定。 在另一个实施例中，通过使用混合间隔物使多空腔标准具变得热稳定。
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公开(公告)号：US06215924B1
公开(公告)日：2001-04-10
申请号：US09130137
申请日：1998-08-06
IPC分类号： G02B632
CPC分类号： G02B6/2937 , G02B6/2938
摘要： An optical coupler device is provided with gradient index first and second lenses, with each lens having an outer endface with one or more ports at a predetermined location defined by a waveguide such as an optical fiber. A narrow bandpass optical filter is disposed between inner endfaces of the first and second lenses. In one embodiment, the second lens is in coaxial mechanical alignment with the first lens so as to have a common optical axis. An input waveguide and an optional reflection waveguide are disposed on the outer endface of the first lens on opposite sides of the optical axis. A transmission waveguide is disposed on one side of the outer endface of the second lens and is positioned at a non-zero angle with respect to the optical axis in order to compensate for a previously unrecognized lateral beam displacement caused by the optical filter. In other embodiments, the input waveguide and optional reflection waveguide are angled, or the optical axis of the second lens is laterally offset from the optical axis of the first lens, to compensate for the lateral beam displacement and thereby improve coupling efficiency.
摘要翻译： 光耦合器件设置有梯度折射率第一透镜和第二透镜，每个透镜具有在由诸如光纤的波导限定的预定位置处具有一个或多个端口的外端面。 窄带通滤光器设置在第一和第二透镜的内端面之间。 在一个实施例中，第二透镜与第一透镜同轴地机械对准，以便具有共同的光轴。 输入波导和可选的反射波导设置在第一透镜的在光轴的相对侧上的外端面上。 传输波导设置在第二透镜的外端面的一侧上，并且相对于光轴以非零角度定位，以便补偿由光学滤波器引起的先前未识别的横向光束位移。 在其他实施例中，输入波导和可选反射波导是成角度的，或者第二透镜的光轴从第一透镜的光轴横向偏移，以补偿横向光束位移，从而提高耦合效率。
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