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公开(公告)号：US20090309838A1
公开(公告)日：2009-12-17
申请号：US12137518
申请日：2008-06-11
CPC分类号： G06F3/0425 , G01J1/0266 , G01J5/089
摘要： A rear projection display devices includes a diffusion layer having an interface surface configured to diffuse visible light, and a visible light projection subsystem configured to project a display image at the interface surface using the visible light to be diffused by the diffusion layer. The rear projection display devices may also include a light transmissive base configured to provide a support for the interface surface, and an infrared touch-sensing subsystem including an infrared light source configured to project infrared light at the base, and an infrared light detector configured to detect infrared light reflecting from the interface surface. Separation elements may be disposed between the diffusion layer and the base so as to maintain a separation between the diffusion layer and the base.
摘要翻译： 背投影显示装置包括具有被配置为漫射可见光的界面的扩散层，以及可视光投影子系统，被配置为使用可扩散层扩散的可见光在界面处投影显示图像。 背投影显示装置还可以包括被配置为为接口表面提供支撑的透光基座，以及红外触摸感测子系统，其包括配置为在基座处投射红外光的红外光源，以及红外光检测器，被配置为 检测从界面反射的红外光。 分离元件可以设置在扩散层和基底之间，以便保持扩散层和基底之间的间隔。
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公开(公告)号：US08169701B2
公开(公告)日：2012-05-01
申请号：US13188139
申请日：2011-07-21
申请人： Prafulla Masalkar
发明人： Prafulla Masalkar
IPC分类号： G03B21/56
摘要： Various embodiments related to a rear projection display screen configured to reduce an intensity of light at a viewing angle at which the light is less likely to be viewed by a user are disclosed. One disclosed embodiment provides a diffusing screen comprising a sheet-like structure transparent to one or more wavelengths of light. The sheet-like structure has a viewing surface and comprises a diffusing pattern configured to create destructive interference of a selected wavelength of light traveling in a direction normal to a plane of the viewing surface of the screen.
摘要翻译： 公开了一种与背投影显示屏有关的各种实施例，该背投影显示屏被配置为减少在用户不太可能看到光的视角的光强度。 一个公开的实施例提供了一种漫射屏幕，其包括对一个或多个波长的光线透明的片状结构。 片状结构具有观察表面，并且包括扩散图案，其被配置为产生沿垂直于屏幕的观察表面的平面的方向行进的所选择的波长的光的干涉。
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公开(公告)号：US06445000B1
公开(公告)日：2002-09-03
申请号：US09590262
申请日：2000-06-09
申请人： Prafulla Masalkar , Hiroji Ebe
发明人： Prafulla Masalkar , Hiroji Ebe
IPC分类号： H01L2906
CPC分类号： H01L31/035236 , B82Y20/00 , H01L31/0352
摘要： A first multi-quantum well structure 12 is formed on a GaAs substrate 10. The first multi-quantum well structure 12 is formed of an AlGaAs barrier layer and a GaAs well layer alternately laid one on the other to form a multi-quantum well. The GaAs barrier layer is not doped with an impurity. A second multi-quantum well structure 14 is formed on the first multi-quantum well structure 12. The second multi-quantum well structure 14 is formed of an AlGaAs barrier layer and a GaAs well layer alternately laid one on the other to form a multi-quantum well. The GaAs barrier layer is not doped with an impurity. Whereby a required electrode area can be smaller to thereby obtain higher detection sensitivity.
摘要翻译： 第一多量子阱结构12形成在GaAs衬底10上。第一多量子阱结构12由彼此交替放置的AlGaAs势垒层和GaAs阱层形成，以形成多量子阱。 GaAs阻挡层不掺杂杂质。 第二多量子阱结构14形成在第一多量子阱结构12上。第二多量子阱结构14由彼此交替放置的AlGaAs势垒层和GaAs阱层形成，以形成多 - 量子井 GaAs阻挡层不掺杂杂质。 所需的电极面积可以更小，从而获得更高的检测灵敏度。
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公开(公告)号：US06441373B1
公开(公告)日：2002-08-27
申请号：US09394671
申请日：1999-09-13
申请人： Prafulla Masalkar
发明人： Prafulla Masalkar
IPC分类号： G02B634
CPC分类号： B82Y20/00 , G02B5/1814 , H01L31/02327 , H01L31/035236
摘要： An infrared photodetector comprising of a photoabsorption layer formed on a substrate comprising of a multiquantum well structure, and a diffraction pattern formed over the photoabsorption layer. The diffraction pattern has recesses whose planar shape contains curves. Accordingly, the infrared photodetector can be formed by the fewer patterning steps and can detect the infrared radiation efficiently.
摘要翻译： 一种红外光电检测器，包括形成在包括多量子阱结构的基板上的光吸收层和形成在光吸收层上的衍射图案。 衍射图案具有其平面形状包含曲线的凹部。 因此，可以通过较少的图案化步骤形成红外光电检测器，并且可以有效地检测红外辐射。
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公开(公告)号：US08384694B2
公开(公告)日：2013-02-26
申请号：US12620483
申请日：2009-11-17
申请人： Karlton Powell , Zhiqiang Liu , Prafulla Masalkar
发明人： Karlton Powell , Zhiqiang Liu , Prafulla Masalkar
IPC分类号： G06F3/042
CPC分类号： G06F3/042 , G06F3/0425
摘要： Various embodiments related to infrared vision for a liquid crystal display (LCD) device are disclosed herein. For example, one disclosed embodiment provides a display system, comprising an LCD device and a display backlight configured to illuminate the LCD device by directing visible light toward an interior surface of the LCD device. The display system further comprises a wavelength-selective reflector disposed between the display backlight and the LCD device and having a smooth surface facing the interior surface of the LCD device, where the wavelength-selective reflector has a wavelength-selective coating configured to cause incident visible light from the display backlight to be transmitted through the wavelength-selective reflector to the LCD device, and cause incident infrared light reflected from an object on or near an exterior surface of the LCD device to be reflected off of the wavelength-selective reflector and directed to an infrared vision subsystem.
摘要翻译： 本文公开了与液晶显示器（LCD）装置的红外视觉有关的各种实施例。 例如，一个公开的实施例提供了一种显示系统，包括LCD装置和配置成通过将可见光引导到LCD装置的内表面来照亮LCD装置的显示器背光。 所述显示系统还包括布置在所述显示器背光源和所述LCD装置之间的波长选择性反射器，并且具有面向所述LCD装置的内表面的光滑表面，其中所述波长选择性反射器具有波长选择性涂层， 来自显示器背光的光将通过波长选择性反射器传输到LCD装置，并且使得从LCD装置的外表面上或其附近的物体反射的入射红外光从波长选择性反射器反射并被引导 到一个红外视觉子系统。
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公开(公告)号：US20120201424A1
公开(公告)日：2012-08-09
申请号：US13020705
申请日：2011-02-03
申请人： Prafulla Masalkar , Alan Leach
发明人： Prafulla Masalkar , Alan Leach
IPC分类号： G06K9/00
CPC分类号： A63F13/213 , A63F13/42 , A63F2300/1093 , A63F2300/6045 , G06F3/005 , G06F3/017 , G06F3/0304
摘要： A method of depth imaging includes acquiring a depth image from a depth camera, identifying an environmental factor invalidating depth information in one or more portions of the depth image, and outputting an environmental modification to mitigate the environmental factor.
摘要翻译： 深度成像的方法包括从深度摄像机获取深度图像，识别在深度图像的一个或多个部分中使深度信息无效的环境因素，并输出环境变化以减轻环境因素。
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公开(公告)号：US20110273673A1
公开(公告)日：2011-11-10
申请号：US13188139
申请日：2011-07-21
申请人： Prafulla Masalkar
发明人： Prafulla Masalkar
摘要： Various embodiments related to a rear projection display screen configured to reduce an intensity of light at a viewing angle at which the light is less likely to be viewed by a user are disclosed. One disclosed embodiment provides a diffusing screen comprising a sheet-like structure transparent to one or more wavelengths of light. The sheet-like structure has a viewing surface and comprises a diffusing pattern configured to create destructive interference of a selected wavelength of light traveling in a direction normal to a plane of the viewing surface of the screen.
摘要翻译： 公开了一种与背投影显示屏有关的各种实施例，该背投影显示屏被配置为减少在用户不太可能看到光的视角的光强度。 一个公开的实施例提供了一种漫射屏幕，其包括对一个或多个波长的光线透明的片状结构。 片状结构具有观察表面，并且包括扩散图案，其被配置为产生沿垂直于屏幕的观察表面的平面的方向行进的所选择的波长的光的干涉。
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公开(公告)号：US20110043490A1
公开(公告)日：2011-02-24
申请号：US12621785
申请日：2009-11-19
IPC分类号： G06F3/042
CPC分类号： G06F3/0421 , G06F3/0425 , G06F2203/04109
摘要： An integrated vision and display system comprises a display-image forming layer configured to transmit a display image for viewing through a display surface; an imaging detector configured to image infrared light of a narrow range of angles relative to the display surface normal and including a reflection from one or more objects on or near the display surface; a vision-system emitter configured to emit the infrared light for illuminating the objects; a visible- and infrared-transmissive light guide having opposing upper and/or lower face, configured to receive the infrared light from the vision-system emitter, to conduct the infrared light via TIR from the upper and lower faces, and to project the infrared light onto the objects outside of the narrow range of angles relative to the display surface normal.
摘要翻译： 集成视觉和显示系统包括：显示图像形成层，被配置为通过显示表面传送用于观看的显示图像; 成像检测器，被配置为对相对于显示表面法线的窄范围的角度的红外光进行成像，并且包括来自显示表面上或附近的一个或多个物体的反射; 视觉系统发射器，被配置为发射用于照射物体的红外光; 具有相对的上和/或下表面的可见和红外透射光导，被配置为接收来自视觉系统发射器的红外光，以经由来自上表面和下表面的TIR传导红外光，并且将红外线 将光照射到相对于显示面正常的窄范围角度之外的物体上。
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公开(公告)号：US20100073326A1
公开(公告)日：2010-03-25
申请号：US12235205
申请日：2008-09-22
申请人： Nigel Keam , Prafulla Masalkar
发明人： Nigel Keam , Prafulla Masalkar
IPC分类号： G06F3/042
CPC分类号： G06F3/0418 , G06F3/0425
摘要： Embodiments related to the calibration of an optical touch-sensitive display device are disclosed. For example, one disclosed embodiment comprises a method of calibrating an image sensor, wherein the method comprises placing a photoluminescent panel over the display surface, and illuminating a target location on the display surface with visible light. Infrared light that is emitted by the panel in response to the illumination of the display surface is received via the image sensor. The received light then is used to calibrate the device.
摘要翻译： 公开了与光学式敏感显示装置的校准有关的实施例。 例如，一个公开的实施例包括校准图像传感器的方法，其中该方法包括将光致发光面板放置在显示表面上，并用可见光照亮显示表面上的目标位置。 通过图像传感器接收由面板响应于显示表面的照明而发射的红外线。 接收的光然后用于校准设备。
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公开(公告)号：US08724887B2
公开(公告)日：2014-05-13
申请号：US13020705
申请日：2011-02-03
申请人： Prafulla Masalkar , Alan Leach
发明人： Prafulla Masalkar , Alan Leach
CPC分类号： A63F13/213 , A63F13/42 , A63F2300/1093 , A63F2300/6045 , G06F3/005 , G06F3/017 , G06F3/0304
摘要： A method of depth imaging includes acquiring a depth image from a depth camera, identifying an environmental factor invalidating depth information in one or more portions of the depth image, and outputting an environmental modification to mitigate the environmental factor.
摘要翻译： 深度成像的方法包括从深度摄像机获取深度图像，识别在深度图像的一个或多个部分中使深度信息无效的环境因素，并输出环境变化以减轻环境因素。
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