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公开(公告)号：US06746122B2
公开(公告)日：2004-06-08
申请号：US10120845
申请日：2002-04-12
申请人： Richard M. Knox
发明人： Richard M. Knox
IPC分类号： G03B2114
CPC分类号： H04N9/3105 , F21V9/00 , F21V9/14 , G02B27/283 , H01J61/025 , H01J61/12 , H01J61/34 , H01J61/40 , H01J65/046 , H04N5/7441 , H04N9/3167
摘要： A light projection engine uses a wide angle reflecting polarizer material (preferably 3M DBEF brand double brightness enhancement filter) as a polarizing beamsplitter to direct polarized light to beam splitter/combiner (such as an X-cube dichroic reflector). The beam splitter/combiner then splits the directed polarized light into separate reflective LCD panels acting as light valves. The LCD panels alter the polarity of the incident light from 0 degrees up to 90 degrees to control which light is passes from the wide angle reflecting polarizer back towards the light source and which light has the necessary polarization change to allow it to pass from the wide angle reflecting polarizer to the lens system. After reflecting off of the LCD panels, the light goes back through the X-cube dichroic reflector, where it is recombined. The recombined light which is of a first polarity is transmitted from the reflecting polarizer to the lens system, while the recombined light which is of a second polarity is transmitted to the light source. The LCDs are preferably analog polarizing LCDs.
摘要翻译： 光投影引擎使用广角反射偏振器材料（优选3M DBEF品牌双亮度增强滤光器）作为偏振分光镜，以将偏振光引导到分束器/组合器（例如X立方二向色反射器）。 然后，分束器/组合器将定向偏振光分成用作光阀的分开的反射LCD面板。 LCD面板将入射光的极性从0度改变到90度，以控制哪个光从广角反射偏振器返回到光源，哪个光具有必要的偏振变化，以允许其从宽的 角度反射偏振器到透镜系统。 在反射出液晶显示面板后，光线通过X-cube二向色反射器返回，在那里它被重组。 将具有第一极性的复合光从反射偏振器传输到透镜系统，而具有第二极性的复合光被传输到光源。 LCD最好是模拟偏振LCD。
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公开(公告)号：US06217174B1
公开(公告)日：2001-04-17
申请号：US09239416
申请日：1999-01-28
申请人： Richard M. Knox
发明人： Richard M. Knox
IPC分类号： G03B2100
CPC分类号： H04N9/3114
摘要： A full color image projection system is provided using two non-color-specific image sources and color-specific filters. The system is capable of projecting an image using one primary color from one image source and the other two primary colors from another image source. The system uses slower speed image sources than would be required with one source alternating between three colors, and exhibits higher resolution than would be obtained from a color-specific image source.
摘要翻译： 使用两个非颜色特定图像源和颜色特定滤光片提供全彩图像投影系统。 该系统能够使用一个图像源的一个原色投影图像，另一个图像源的另外两个基色投影图像。 该系统使用比三种颜色之间交替的源更慢的图像源，并且表现出比从特定于颜色的图像源获得的分辨率更高的分辨率。
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23.发明授权公开(公告)号：US06204901B1
公开(公告)日：2001-03-20
申请号：US09110652
申请日：1998-07-07
申请人： Richard M. Knox
发明人： Richard M. Knox
IPC分类号： G02F11335
CPC分类号： G02F1/13473 , G02F1/133536 , G02F2001/133545
摘要： Color shutters that include reflecting linear polarizers can be used in projection display applications. The reflecting linear polarizers are used to reflect the light that would have been absorbed by prior art color shutters. The use of reflecting linear polarizers can resolve overheating and degradation problems of prior art system and projection display systems using sequential color operation can be built and operate reliably.
摘要翻译： 包括反射线偏振器的彩色百叶窗可用于投影显示应用。 反射线性偏振器用于反射现有技术的彩色百叶窗所吸收的光。 使用反射线性偏振器可以解决现有技术的系统的过热和降解问题，并且可以构建并可靠地操作使用顺序彩色操作的投影显示系统。
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公开(公告)号：US5977942A
公开(公告)日：1999-11-02
申请号：US771191
申请日：1996-12-20
申请人： Dale S. Walker , Richard M. Knox
发明人： Dale S. Walker , Richard M. Knox
CPC分类号： G09G3/3651 , H04N5/66 , H04N9/30 , G09G2300/0809 , G09G2300/0814 , G09G2300/0852 , G09G2310/0235 , G09G2310/0259 , G09G2310/066 , G09G2320/0276 , G09G3/2014 , G09G3/3648 , H04N2005/745
摘要： In a color sequential system using LCDs, the LCD must operate faster than the frame rate because red, green, and blue are done sequentially. Ferroelectric LCDs can do this, but they are not analog devices and so cannot provide analog display levels. Instead, a pulse width modulation (PWM) technique is used. In the system of the present invention, each pixel has three storage devices to hold RGB analog levels. A latch is used to load these values in parallel. Then an analog 3:1 multiplexer is used to select the proper storage device for the current sequential color. The multiplexer output goes to a comparator, which has a sawtooth waveform input at much faster than the frame rate. The comparator output changes with the sawtooth level, so that PWM control is provided for each pixel. As an alternative, standard analog LCD pixels can be sequentially switched between three color input storage devices.
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公开(公告)号：US5734375A
公开(公告)日：1998-03-31
申请号：US486310
申请日：1995-06-07
CPC分类号： G06F3/0423 , G06F3/0213
摘要： A method of determining an object's position and associated apparatus provides positional information in a form that may be conveniently communicated to a computer to calculate the object's position. In a preferred embodiment, representatively incorporated in a computer keyboard, a method of determining an object's position includes forming an optical grid of reflected beacons and detecting an obstruction of the reflected beacons. The preferred embodiment apparatus utilizes a single light source and a single light sensor to detect an object's position in two dimensions.
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公开(公告)号：US2307685A
公开(公告)日：1943-01-05
申请号：US42522441
申请日：1941-12-31
申请人： RICHARD M KNOX
发明人： KNOX JR CHARLES E
CPC分类号： E21B17/00 , F16L9/08 , F16L25/0027
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公开(公告)号：US20100108124A1
公开(公告)日：2010-05-06
申请号：US12572913
申请日：2009-10-02
申请人： Richard M. Knox , Chanda B. Walker
发明人： Richard M. Knox , Chanda B. Walker
IPC分类号： H01L31/052 , G02B5/10 , G02B6/10
CPC分类号： H01L31/0543 , G02B6/002 , H01L31/0547 , Y02E10/52
摘要： A solar concentrator assembly comprises a stepped wave-guide assembly, a reflective mirror assembly, and an optical target providing unit. The stepped wave-guide assembly includes at least one surface, comprising a set of parallel but offset adjacent surfaces, and an opposing surface. The wave-guide assembly propagates light in a total internal reflection mode between the at least one surface and the opposing surface. The wave-guide assembly also includes transition surfaces between the adjacent parallel surfaces and the transition surfaces include edges perpendicular to a longitudinal axis of the wave-guide assembly. The reflective mirror assembly includes a plurality of mirrors each being aligned to reflect the light to one of the transition surfaces between two of the parallel adjacent surfaces. The optical target providing unit converts solar energy from the light propagated in the wave-guide assembly to a different form of energy.
摘要翻译： 太阳能集中器组件包括阶梯式波导组件，反射镜组件和光学目标提供单元。 阶梯式波导组件包括至少一个表面，其包括一组平行但相邻的相邻表面和相对的表面。 波导组件以至少一个表面和相对表面之间的全内反射模式传播光。 波导组件还包括相邻平行表面之间的过渡表面，并且过渡表面包括垂直于波导组件的纵向轴线的边缘。 反射镜组件包括多个反射镜，每个反射镜被对准以将光反射到两个平行相邻表面之间的过渡表面之一。 光学目标提供单元将来自在波导组件中传播的光的太阳能转换成不同形式的能量。
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28.发明授权公开(公告)号：US07554737B2
公开(公告)日：2009-06-30
申请号：US11073893
申请日：2005-03-07
IPC分类号： G02B5/02
CPC分类号： G02B5/32 , G02B5/0215 , G02B5/0252 , G02B5/0278 , G02B27/0927 , G02B27/0944 , G02B27/48
摘要： Systems and methods for providing illumination suitable for imaging devices such as laser projection systems, wherein the illumination pattern is adjustable by modifying one or more characteristics of a controlled angle diffuser. In one embodiment, a highly collimated (e.g., laser light) beam is passed through a holographic diffuser to create a well defined cone angle for the light emanating from each point on the diffuser. This light is focused into an illumination image that is controlled by the prescription of the diffuser. In one embodiment, the diffuser can be positioned to alternately place different regions having different prescriptions in the optical path corresponding to the illumination image. In one embodiment, the diffuser can be continually moved to eliminate speckling and “worminess” in the illumination image.
摘要翻译： 用于提供适合于诸如激光投影系统的成像装置的照明的系统和方法，其中照明图案可通过修改受控角度扩散器的一个或多个特性来调节。 在一个实施例中，高度准直（例如，激光）光束通过全息漫射器以产生用于从扩散器上的每个点发出的光的良好限定的锥角。 该光被聚焦成由扩散器的处方控制的照明图像。 在一个实施例中，扩散器可以被定位成在对应于照明图像的光路中交替地放置具有不同处方的不同区域。 在一个实施例中，可以连续地移动扩散器以消除照明图像中的斑点和“蠕动”。
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公开(公告)号：US06580471B2
公开(公告)日：2003-06-17
申请号：US10043228
申请日：2002-01-14
申请人： Richard M. Knox
发明人： Richard M. Knox
IPC分类号： H04N574
CPC分类号： G02B27/283 , G03B21/10 , G03B21/606 , G06F1/1601 , G09F2013/0422 , G09F2013/145 , H04N5/7408 , H04N9/3141 , H04N9/3147
摘要： An “extra-folded” projection display system includes a selectively reflective material (e.g., a linear reflecting polarizer) placed immediately behind the system's imaging screen. The display system includes an image projector that projects an image beam containing light of a predetermined linear polarization toward the imaging screen. The linear reflecting polarizer reflects the light in the image beam away from the screen. The reflected image beam then encounters a ¼-wavelength achromatic retarder which converts the linear polarization to circular polarization. The image beam next hits a mirror that reflects the light back through the ¼-wavelength achromatic retarder, which converts the circular polarization back to linear polarization, with the polarization director rotated 90° from the original polarization director. The linear reflecting polarizer then allows the light to pass through to the image screen.
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30.发明授权公开(公告)号：US06547399B2
公开(公告)日：2003-04-15
申请号：US10100537
申请日：2002-03-18
申请人： Richard M. Knox
发明人： Richard M. Knox
IPC分类号： G03B2100
CPC分类号： H04N9/3114
摘要： A full color image projection system is provided using two non-color-specific image sources and color-specific filters. The system is capable of projecting an image using one primary color from one image source and the other two primary colors from another image source. The system uses slower speed image sources than would be required with one source alternating between three colors, and exhibits higher resolution than would be obtained from a color-specific image source.
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