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公开(公告)号：US6064523A
公开(公告)日：2000-05-16
申请号：US106783
申请日：1998-06-29
CPC分类号： G02B27/283 , G02B5/3025
摘要： An apparatus for polarization conversion having a light source for supplying vertically and horizontally linearly polarized light to an optical path and a parabolic mirror disposed in the optical path and proximate to the light source. In different embodiments, the parabolic mirror has a mirror coating to induce a phase shift of 0.degree., 90.degree., or an arbitrary phase shift between incident light and reflected light. A polarizer, preferably a reflective polarizer film, is disposed in the optical path for reflecting light of one of the linear polarizations and for transmitting the other linear polarization. Lastly, one or more waveplates are disposed in the optical path between the polarizer and the parabolic mirror. The waveplates have opposing segments each having axes which are antiparallel to each other for recycling the reflected linear polarization by converting it to the transmitted polarization.
摘要翻译： 一种用于偏振转换的装置，具有用于向光路提供垂直和水平线性偏振光的光源和设置在光路中并且靠近光源的抛物面镜。 在不同的实施例中，抛物面反射镜具有镜面涂层，以引起0°，90°的相移或入射光和反射光之间的任意相移。 偏振器，优选反射偏振膜，设置在光路中，用于反射线偏振之一的光，并用于透射另一线偏振。 最后，一个或多个波片设置在偏振器和抛物面镜之间的光路中。 波片具有各自具有彼此反平行的轴的相对的段，用于通过将反射的线偏振转换成透射的偏振来再循环反射的线偏振。
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公开(公告)号：US06341038B1
公开(公告)日：2002-01-22
申请号：US09507996
申请日：2000-02-22
IPC分类号： G02B530
CPC分类号： G02B27/283
摘要： An apparatus for polarization conversion having a light source for supplying vertically and horizontally linearly polarized light to an optical path and a parabolic mirror disposed in the optical path and proximate to the light source. In different embodiments, the parabolic mirror has a mirror coating to induce a phase shift of 0°, 90°, or an arbitrary phase shift between incident light and reflected light. A polarizer means, preferably a reflective polarizer film, is disposed in the optical path for reflecting light of one of the linear polarizations and for transmitting the other linear polarization. Lastly, one or more waveplates are disposed in the optical path between the polarizer means and the parabolic mirror. The waveplates have opposing segments each having axes which are antiparallel to each other for recycling the reflected linear polarization by converting it to the transmitted polarization.
摘要翻译： 一种用于偏振转换的装置，具有用于向光路提供垂直和水平线性偏振光的光源和设置在光路中并且靠近光源的抛物面镜。 在不同的实施例中，抛物面反射镜具有镜面涂层，以引起0°，90°的相移或入射光与反射光之间的任意相移。 在光路中设置偏振器装置，优选地是反射偏振片，用于反射线偏振之一的光，并用于透射另一线性偏振。 最后，一个或多个波片设置在偏振器装置和抛物面镜之间的光路中。 波片具有各自具有彼此反平行的轴的相对的段，用于通过将反射的线偏振转换成透射的偏振来再循环反射的线偏振。
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3.发明授权Efficient optical system for a high resolution projection display employing reflection light valves 失效高效光学系统，用于采用反射光阀的高分辨率投影显示
公开(公告)号：US5786934A
公开(公告)日：1998-07-28
申请号：US917400
申请日：1997-08-25
申请人： George Liang-Tai Chiu , Thomas Mario Cipolla , Fuad Elias Doany , Derek Brian Dove , Alan Edward Rosenbluth , Rama Nand Singh , Janusz Stanislaw Wilczynski
发明人： George Liang-Tai Chiu , Thomas Mario Cipolla , Fuad Elias Doany , Derek Brian Dove , Alan Edward Rosenbluth , Rama Nand Singh , Janusz Stanislaw Wilczynski
CPC分类号： H04N9/3105
摘要： An optical system is described consisting of reflection birefringent light valves, polarizing beam splitter, color image combining prisms, illumination system, projection lens, filters for color and contrast control, and screen placed in a configuration offering advantages for a high resolution color display. In particular, the present invention includes a color splitting prism assembly having a plurality of output faces through which a separate color component is directed to be reflected by a respective light valve. Color absorbing filters are disposed at each of the output faces to absorb the color components not corresponding to the color directed through each output face.
摘要翻译： 描述了由反射双折射光阀，偏振分束器，彩色图像组合棱镜，照明系统，投影透镜，用于颜色和对比度控制的滤光器以及放置在为高分辨率彩色显示提供优点的配置中的屏幕组成的光学系统。 特别地，本发明包括具有多个输出面的分色棱镜组件，通过该多个输出面，单独的颜色分量被相应的光阀反射。 在每个输出面上设置吸收滤光片以吸收不对应于通过每个输出面引导的颜色的颜色分量。
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公开(公告)号：US06193393B1
公开(公告)日：2001-02-27
申请号：US09151178
申请日：1998-09-10
IPC分类号： F21V2304
CPC分类号： G02B27/141
摘要： An illumination apparatus including: at least two light sources, in which each of the light sources produce independent light beams; a controller for sequentially driving each of the light sources at a high power above their respective maximum rated power, to produce a respective light beam for each light source, and for leaving the remaining light sources at a low power below their respective maximum rated power, such that the time-average of the high and low power levels are set to a predetermined value for each of the light sources; and a combiner and director for sequentially combining each of the light beams from their respective light sources while being driven at high power into a common output beam with a fixed direction. Various combiner and directors are disclosed including tiltable mirrors under the control of the controller as well as optical systems.
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5.发明授权Efficient optical system for a high resolution projection display employing reflection light valves 失效高效光学系统，用于采用反射光阀的高分辨率投影显示
公开(公告)号：US5777789A
公开(公告)日：1998-07-07
申请号：US934300
申请日：1997-09-19
申请人： George Liang-Tai Chiu , Thomas Mario Cipolla , Fuad Elias Doany , Derek Brian Dove , Alan Edward Rosenbluth , Rama Nand Singh , Janusz Stanislaw Wilczynski
发明人： George Liang-Tai Chiu , Thomas Mario Cipolla , Fuad Elias Doany , Derek Brian Dove , Alan Edward Rosenbluth , Rama Nand Singh , Janusz Stanislaw Wilczynski
CPC分类号： H04N9/3105
摘要： An optical system is described consisting of reflection birefringent light valves, polarizing beam splitter, color image combining prisms, illumination system, projection lens, filters for color and contrast control, and screen placed in a configuration offering advantages for a high resolution color display. The illumination system includes a light tunnel having a cross-sectional shape corresponding to the geometrical shape of the spacial light modulator to optimize the amount of light projected onto the screen.
摘要翻译： 描述了由反射双折射光阀，偏振分束器，彩色图像组合棱镜，照明系统，投影透镜，用于颜色和对比度控制的滤光器以及放置在为高分辨率彩色显示提供优点的配置中的屏幕组成的光学系统。 照明系统包括具有对应于空间光调制器的几何形状的横截面形状的光通道，以优化投影到屏幕上的光量。
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6.发明授权Apparatus and method for intensifying illumination brightness by time-superposing multiple pulsed light sources 失效通过时间叠加多个脉冲光源来增强照明亮度的装置和方法公开(公告)号：US06332693B1
公开(公告)日：2001-12-25
申请号：US09657031
申请日：2000-09-07
IPC分类号： F21V2304
CPC分类号： G02B27/141
摘要： An illumination apparatus including: at least two light sources, in which each of the light sources produce independent light beams; a controller for sequentially driving each of the light sources at a high power above their respective maximum rated power, to produce a respective light beam for each light source, and for leaving the remaining light sources at a low power below their respective maximum rated power, such that the time-average of the high and low power levels are set to a predetermined value for each of the light sources; and a combiner and director for sequentially combining each of the light beams from their respective light sources while being driven at high power into a common output beam with a fixed direction. Various combiner and directors are disclosed including tiltable mirrors under the control of the controller as well as optical systems.
摘要翻译： 一种照明装置，包括：至少两个光源，其中每个光源产生独立的光束; 用于以高于其各自的最大额定功率的高功率顺序地驱动每个光源的控制器，以产生用于每个光源的各个光束，并且将剩余的光源以低于它们各自的最大额定功率的低功率离开， 使得对于每个光源将高功率和低功率电平的时间平均值设置为预定值; 以及组合器和导向器，用于在以大功率驱动到具有固定方向的公共输出光束的情况下，顺序地组合来自它们各自的光源的每个光束。 公开了各种组合器和引导器，其包括在控制器的控制下的可倾斜的反射镜以及光学系统。
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7.发明授权Efficient optical system for a high resolution projection display employing reflection light valves 失效高效光学系统，用于采用反射光阀的高分辨率投影显示
公开(公告)号：US5786873A
公开(公告)日：1998-07-28
申请号：US910807
申请日：1997-08-13
申请人： George Liang-Tai Chiu , Thomas Mario Cipolla , Fuad Elias Doany , Derek Brian Dove , Alan Edward Rosenbluth , Rama Nand Singh , Janusz Stanislaw Wilczynski
发明人： George Liang-Tai Chiu , Thomas Mario Cipolla , Fuad Elias Doany , Derek Brian Dove , Alan Edward Rosenbluth , Rama Nand Singh , Janusz Stanislaw Wilczynski
IPC分类号： G02F1/13 , G02F1/1335 , G03B21/00 , H04N5/74 , H04N9/31
CPC分类号： G02B27/283 , G02B27/1026 , G02B27/145 , H04N9/3105
摘要： An optical system is described consisting of reflection birefringent light valves, polarizing beam splitter, color image combining prisms, illumination system, projection lens, filters for color and contrast control, and screen placed in a configuration offering advantages for a high resolution color display. The system includes a quarter wave plate positioned to suppress stray reflection from the projection lens. The system also includes a second quarter wave plate disposed on the screen and a polarizing film disposed on the second quarter wave plate to suppress ambient light from illuminating the screen and entering the system.
摘要翻译： 描述了由反射双折射光阀，偏振分束器，彩色图像组合棱镜，照明系统，投影透镜，用于颜色和对比度控制的滤光器以及放置在为高分辨率彩色显示提供优点的配置中的屏幕组成的光学系统。 该系统包括四分之一波片，定位成抑制投影透镜的杂散反射。 该系统还包括设置在屏幕上的第二四分之一波长板和设置在第二四分之一波片上的偏振膜，以抑制环境光照射屏幕并进入系统。
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公开(公告)号：US06803972B1
公开(公告)日：2004-10-12
申请号：US08975337
申请日：1997-11-20
IPC分类号： G06F11335
CPC分类号： H04N9/3105 , G02B27/285 , G02F1/13362
摘要： A class of novel structures which make novel use of polymer based reflective polarizing films in an improved polarization conversion system which are useful in liquid crystal projection systems that are easily manufactured, of lower cost, and permit the versatility of higher numerical aperture polarization conversions. Another aspect of the present invention are polarization modulating liquid crystal projection display systems utilizing the polarization conversion systems of the present invention.
摘要翻译： 一种在改进的偏振转换系统中使用聚合物基反射偏振膜的新颖结构，其可用于容易制造的液晶投影系统，成本更低，并且允许更高数值孔径偏振转换的通用性。 本发明的另一方面是利用本发明的偏振转换系统的偏振调制液晶投影显示系统。
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公开(公告)号：US5943171A
公开(公告)日：1999-08-24
申请号：US89569
申请日：1998-06-03
CPC分类号： G02B27/017 , G02B27/0172 , G02B5/30
摘要： A head mounted display for entering an image into the eye of a viewer along a viewing axis. The head mounted display has a light source for supplying unpolarized light to an optical path. Also provided is a first polarizer disposed in the optical path for rotating the unpolarized light to that of a first polarization. A second polarizer is also disposed in the optical path for blocking light of the first polarization from reaching the eye. A reflective light valve is disposed in the optical path for rotating the light of the first polarization to an image of a second polarization. Also provided is a concave mirror disposed in the optical path for focusing and reflecting the image of the second polarization. Lastly, a directing means is provided for directing the light of the first polarization to the reflective light valve, for directing the image of the second polarization to the concave mirror, and for directing the focused and reflected image from the concave mirror towards the second polarizer. The second polarizer then transmits the focused and reflected image towards the eye of the viewer along the viewing axis.
摘要翻译： 一种头戴式显示器，用于沿着观察轴将图像输入观察者的眼睛。 头戴式显示器具有用于向光路提供非偏振光的光源。 还提供了设置在光路中用于将非偏振光旋转到第一偏振光的第一偏振器。 第二偏振器还设置在光路中，用于阻挡第一偏振光的光到达眼睛。 反射光阀设置在光路中，用于将第一偏振光照射到第二偏振的图像。 还提供了设置在光路中用于聚焦和反射第二偏振的图像的凹面镜。 最后，提供了一种引导装置，用于将第一偏振光引导到反射光阀，用于将第二偏振的图像引导到凹面镜，以及用于将聚焦和反射的图像从凹面镜朝向第二偏振片 。 然后第二偏振器沿着观察轴向观看者的眼睛发射聚焦和反射的图像。
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10.发明授权
公开(公告)号：US06019474A
公开(公告)日：2000-02-01
申请号：US167156
申请日：1998-10-06
申请人： Fuad Elias Doany , Derek Brian Dove
发明人： Fuad Elias Doany , Derek Brian Dove
CPC分类号： G02B27/149 , H04N9/3105
摘要： An optical projection display system, such as a liquid crystal display device, is disclosed. A feature of the present invention is that the projection display system utilizes a modified X-cube (or X-prism) arrangement wherein the internal angles of the prisms forming the modified X-cube deviate from 90.degree.. The utilization of the present modified X-cube arrangement improves contrast for checkerboard images, minimizes the possibility of spurious unwanted reflections from entering the projection lens as well as substantially eliminating glare and ghost images typically present using prior art X-cubes.
摘要翻译： 公开了一种诸如液晶显示装置的光学投影显示系统。 本发明的特征在于，投影显示系统利用改进的X立方体（或X棱镜）布置，其中形成改性X-立方体的棱镜的内角偏离90°。 使用本发明的改进的X立方体排列提高了棋盘图像的对比度，从而最大限度地减少入射到投影透镜中的杂散不需要的反射的可能性，并且基本上消除了使用现有技术X立方体通常存在的眩光和重影图像。
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