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1.发明授权Method of using a retarder plate to improve contrast in a reflective imaging system 有权使用延迟板改善反射成像系统中的对比度的方法公开(公告)号：US06340230B1
公开(公告)日：2002-01-22
申请号：US09523370
申请日：2000-03-10
IPC分类号： G03B2100
CPC分类号： H04N9/3102 , G02B27/283 , H04N5/7441
摘要： Methods and apparatus for enhancing the performance of a reflective liquid crystal display system. The high-contrast color splitting prism system utilizes a “double-passed” prism assembly. Polarized light enters the prism assembly, is color-split and emitted as separate colors to spatial light modulators which reflect each color in accordance with a desired image. The reflective light is passed, once again, through the prism assembly where the separate colors converge and propagate to a projection lens for display of the image on a screen. A waveplate retarder is positioned between the liquid crystal display and the polarizing element. The waveplate retarder is tilted with respect to the optical axis to eliminate the deleterious effects of the Fresnel reflections at the interfaces of the waveplate retarder.
摘要翻译： 提高反射型液晶显示系统性能的方法和装置。 高对比度分色棱镜系统采用“双通”棱镜组件。 偏振光进入棱镜组件，被分色并作为分开的颜色发射到根据期望的图像反映每种颜色的空间光调制器。 反射光再次通过棱镜组件，其中分离的颜色会聚并传播到投影透镜，以在屏幕上显示图像。 波片延迟器位于液晶显示器和偏振元件之间。 波片延迟器相对于光轴倾斜，以消除波片延迟器界面处菲涅耳反射的有害影响。
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公开(公告)号：US5327451A
公开(公告)日：1994-07-05
申请号：US927129
申请日：1992-08-07
申请人： Ray A. Walker , Jeffrey A. Gohman , Michael A. Lind , Peter G. Howard , William E. Ortyn , Michael R. Greenberg
发明人： Ray A. Walker , Jeffrey A. Gohman , Michael A. Lind , Peter G. Howard , William E. Ortyn , Michael R. Greenberg
CPC分类号： H01S3/005 , G06K7/10584 , G06K7/10702 , H01S5/06216 , G06K2207/1018 , H01S5/005
摘要： A laser source arrangement is provided for use in a laser instrument of a kind used to transmit a scan pattern to a target which is spaced from the laser instrument and to detect light reflected from the target. The laser source arrangement preferably comprises a laser diode for producing a laser beam used to form the scan pattern. The laser diode is characterized by astigmatism which is subject to variation with the temperature of the case of the diode. The arrangement further includes drive apparatus for driving the laser diode in a pulsed mode having a duty cycle which reduces the astigmatism and substantially controls the temperature dependence of the astigmatism. Optics are also provided for statically correcting the astigmatism of the laser diode.
摘要翻译： 激光源装置被提供用于用于将扫描图案传送到与激光仪器间隔开的目标物并用于检测从目标物反射的光的类型的激光仪器。 激光源装置优选地包括用于产生用于形成扫描图案的激光束的激光二极管。 激光二极管的特征在于散光随着二极管的情况而变化。 该装置还包括用于以脉冲模式驱动激光二极管的驱动装置，该驱动装置具有减少像散的占空比，并且基本上控制像散的温度依赖性。 还提供光学器件用于静态校正激光二极管的散光。
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公开(公告)号：US06886943B1
公开(公告)日：2005-05-03
申请号：US10693594
申请日：2003-10-24
CPC分类号： H04N9/12 , G03B21/26 , H04N5/7441
摘要： An image display system uses a polarizing beam splitter to direct light from a lamp to multiple spatial modulators. The spatial light modulators (“SLM”) each generate an image portion, which are stitched together on a display screen to obtain a high resolution image. In particular embodiment, image portions from two conventional SLMs, each controlling about two million pixels, are stitched together to form an image having about four million pixels. In another embodiment, two lamps are used with four SLMs to produce a resultant image having about eight million pixels.
摘要翻译： 图像显示系统使用偏振分束器将来自灯的光引导到多个空间调制器。 空间光调制器（“SLM”）每个都生成图像部分，其在显示屏幕上拼接在一起以获得高分辨率图像。 在特定实施例中，来自两个传统SLM（每个控制约二百万个像素）的图像部分被缝合在一起以形成具有约四百万个像素的图像。 在另一个实施例中，两个灯与四个SLM一起使用以产生具有约八百万像素的合成图像。
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公开(公告)号：US07347562B2
公开(公告)日：2008-03-25
申请号：US11131635
申请日：2005-05-18
IPC分类号： G03B21/00
CPC分类号： G03B21/2026 , G02B26/008 , G02B27/1026 , G02B27/141 , G02B27/283 , G03B21/2073 , H04N9/3111 , H04N9/3117
摘要： A two-panel projection display system includes a color wheel having color filter segments that transmit light having a secondary color, namely cyan, magenta, and yellow, made up of two primary colors. A primary color separator, such as a second color wheel, a transflective dichroic beamsplitter, or a color-sensitive polarizing switch separates the secondary color beam into a first polarized primary color beam and a second polarized primary color beam, which are directed to first and second imager panels. A beam combiner combines the first polarized primary color beam from the first imager and the second polarized primary color beam from the second imager to form a projection beam. Accordingly, any two primary colors can be imaged at the same time enabling the system to be white point balanced.
摘要翻译： 双面投影显示系统包括具有彩色滤光片段的色轮，该彩色滤光片段透射由二原色构成的二次色，即青色，品红色和黄色的光。 原色分离器，例如第二色轮，半透反射二分色分束器或色敏偏振开关将次色光束分离成第一偏振原色光束和第二偏振原色光束，其被定向到第一和第 第二个成像面板。 光束组合器将来自第一成像器的第一偏振原色光束和来自第二成像器的第二极化原色光束组合以形成投影光束。 因此，可以同时成像任何两种原色，使得系统能够被白点平衡。
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公开(公告)号：US06690513B2
公开(公告)日：2004-02-10
申请号：US10180320
申请日：2002-06-27
IPC分类号： G02B2728
CPC分类号： G02B6/2713 , G02B6/2746 , G02B6/29373 , G02B6/29386 , H04Q2011/0035 , H04Q2011/0049 , H04Q2011/0075
摘要： Interleavers are a useful tool in wavelength division multiplexing (WDM) to separate a signal with closely spaced channels into two signals, e.g. odd and even ITU channels, each with twice the channel spacing. Alternatively, two signals with a large channel spacing can be combined into a single beam with half the channel spacing. The invention relates to an optical interferometer using rhomb prisms as resonant cavities, which, when properly designed, provide the necessary phase shifts for interleaving or de-interleaving sets of optical wavelength channels. The present invention utilizes the differential phase shift between orthogonally polarized components induced by total internal reflection (TIR) off the surfaces of the rhomb prisms. Dispersion reducing techniques are also disclosed, including multiple rhomb interleavers and multi-pass rhomb interleavers.
摘要翻译： 交织器是波分复用（WDM）中有用的工具，用于将具有紧密间隔的信道的信号分离成两个信号，例如， 奇数和均匀的ITU信道，每个信道间隔都是两倍。 或者，具有大信道间隔的两个信号可以被组合成具有一半信道间隔的单个波束。 本发明涉及一种使用菱形棱镜作为谐振腔的光学干涉仪，其在适当设计时为光波长通道的交织或解交织提供必要的相移。 本发明利用从菱形棱镜的表面引起的全内反射（TIR）引起的正交极化分量之间的差分相移。 还公开了分散降低技术，包括多个菱形交织器和多遍菱形交织器。
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