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1. 发明申请

US20110304281A1 THERMALLY-TUNED DEPTH CAMERA LIGHT SOURCE 有权
标题翻译：热调深度摄像机光源
公开(公告)号：US20110304281A1
公开(公告)日：2011-12-15
申请号：US12797410
申请日：2010-06-09
申请人： Scott McEldowney , Prafulla Masalkar , Yun Fang
发明人： Scott McEldowney , Prafulla Masalkar , Yun Fang
IPC分类号： H05B37/02
CPC分类号： A63F13/213 , A63F2300/1087
摘要： Various embodiments are disclosed for setting a depth camera light source operating temperature in a thermal tuning mode executed during a depth camera manufacturing process. One embodiment of a method includes illuminating a target with light from a light source at a plurality of light source temperatures; for each light source temperature, sensing an intensity of reflected light received at a light sensor through a light filter positioned intermediate the target and the light sensor; approximating a frequency response relationship between a light filter cutoff frequency and a light source emission wavelength based on a comparison of the sensed intensities and stored reference data; generating a temperature set point so that the light source emission wavelength does not overlap the light filter cutoff frequency by more than a predetermined overlap threshold; and programming a temperature controller to control the light source to the temperature set point during depth camera operation.
摘要翻译：公开了用于在深度相机制造过程中执行的热调谐模式中设置深度相机光源操作温度的各种实施例。一种方法的一个实施例包括在多个光源温度下用来自光源的光照射目标物; 对于每个光源温度，感测通过位于目标和光传感器之间的光过滤器在光传感器处接收的反射光的强度; 基于感测强度和存储的参考数据的比较近似滤光器截止频率和光源发射波长之间的频率响应关系; 产生温度设定点，使得光源发射波长不与滤光器截止频率重叠大于预定重叠阈值; 并在深度相机操作期间编程温度控制器以将光源控制到温度设定点。

2. 发明授权

US08330822B2 Thermally-tuned depth camera light source 有权
标题翻译：热调深度相机光源
公开(公告)号：US08330822B2
公开(公告)日：2012-12-11
申请号：US12797410
申请日：2010-06-09
申请人： Scott McEldowney , Prafulla Masalkar , Yun Fang
发明人： Scott McEldowney , Prafulla Masalkar , Yun Fang
IPC分类号： H04N9/04
CPC分类号： A63F13/213 , A63F2300/1087
摘要： Various embodiments are disclosed for setting a depth camera light source operating temperature in a thermal tuning mode executed during a depth camera manufacturing process. One embodiment of a method includes illuminating a target with light from a light source at a plurality of light source temperatures; for each light source temperature, sensing an intensity of reflected light received at a light sensor through a light filter positioned intermediate the target and the light sensor; approximating a frequency response relationship between a light filter cutoff frequency and a light source emission wavelength based on a comparison of the sensed intensities and stored reference data; generating a temperature set point so that the light source emission wavelength does not overlap the light filter cutoff frequency by more than a predetermined overlap threshold; and programming a temperature controller to control the light source to the temperature set point during depth camera operation.
摘要翻译：公开了用于在深度相机制造过程中执行的热调谐模式中设置深度相机光源操作温度的各种实施例。一种方法的一个实施例包括在多个光源温度下用来自光源的光照射目标物; 对于每个光源温度，感测通过位于目标和光传感器之间的光过滤器在光传感器处接收的反射光的强度; 基于感测强度和存储的参考数据的比较近似滤光器截止频率和光源发射波长之间的频率响应关系; 产生温度设定点，使得光源发射波长不与滤光器截止频率重叠大于预定重叠阈值; 并在深度相机操作期间编程温度控制器以将光源控制到温度设定点。

3. 发明授权

US08136690B2 Sensing the amount of liquid in a vessel 有权
标题翻译：感测容器中的液体量
公开(公告)号：US08136690B2
公开(公告)日：2012-03-20
申请号：US12423716
申请日：2009-04-14
申请人： Yun Fang , David Michael Morelock , Prafulla Masalkar
发明人： Yun Fang , David Michael Morelock , Prafulla Masalkar
IPC分类号： B65D25/54
CPC分类号： A47G19/2227
摘要： A vessel comprising a fluid-confining surface, a basal surface disposed below the fluid-confining surface, and a light guide. The light guide includes a first window partly defining the basal surface and a second window partly defining the fluid-confining surface, where the second window is disposed above a lowest region of the fluid-confining surface. In other embodiments, an isolating structure is provided that substantially surrounds the light guide between the first and second windows.
摘要翻译：包括流体限制表面，设置在流体封闭表面下方的基面和光导的容器。光导包括部分地限定基面的第一窗口和部分限定流体限制表面的第二窗口，其中第二窗口设置在流体限制表面的最低区域之上。在其他实施例中，提供了基本上围绕第一和第二窗口之间的光导的隔离结构。

4. 发明申请

US20100258575A1 SENSING THE AMOUNT OF LIQUID IN A VESSEL 有权
标题翻译：感测液体中的液体量
公开(公告)号：US20100258575A1
公开(公告)日：2010-10-14
申请号：US12423716
申请日：2009-04-14
申请人： Yun Fang , David Michael Morelock , Prafulla Masalkar
发明人： Yun Fang , David Michael Morelock , Prafulla Masalkar
IPC分类号： B65D25/54
CPC分类号： A47G19/2227
摘要： A vessel comprising a fluid-confining surface, a basal surface disposed below the fluid-confining surface, and a light guide. The light guide includes a first window partly defining the basal surface and a second window partly defining the fluid-confining surface, where the second window is disposed above a lowest region of the fluid-confining surface. In other embodiments, an isolating structure is provided that substantially surrounds the light guide between the first and second windows.
摘要翻译：包括流体限制表面，设置在流体封闭表面下方的基面和光导的容器。光导包括部分地限定基面的第一窗口和部分限定流体限制表面的第二窗口，其中第二窗口设置在流体限制表面的最低区域之上。在其他实施例中，提供了基本上围绕第一和第二窗口之间的光导的隔离结构。

5. 发明授权

US08169701B2 Diffusing screen 失效
标题翻译：扩散屏幕
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
CPC分类号： G03B21/62 , G03B21/10 , G03B21/60
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。

6. 发明授权

US06445000B1 Photodetecting device 失效
标题翻译：光电检测装置
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。

7. 发明授权

US06441373B1 Infrared photodetector and method of manufacturing the same 有权
标题翻译：红外光电探测器及其制造方法
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。

8. 发明授权

US08384694B2 Infrared vision with liquid crystal display device 有权
标题翻译：红外视觉与液晶显示装置
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。

9. 发明申请

US20120201424A1 ENVIRONMENTAL MODIFICATIONS TO MITIGATE ENVIRONMENTAL FACTORS 有权
标题翻译：减缓环境因素的环境变化
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。

10. 发明申请

US20110273673A1 DIFFUSING SCREEN 失效
标题翻译：扩散屏幕
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
IPC分类号： G03B21/62 , G03B21/14
CPC分类号： G03B21/62 , G03B21/10 , G03B21/60
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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