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1. 发明申请

US20070035700A1 COLOR VIDEO PROJECTION SYSTEM EMPLOYING REFLECTIVE LIQUID CRYSTAL DISPLAY DEVICES 有权
公开(公告)号：US20070035700A1
公开(公告)日：2007-02-15
申请号：US11469014
申请日：2006-08-31
申请人： Kurt Stahl , Jeffrey Gohman
发明人： Kurt Stahl , Jeffrey Gohman
IPC分类号： G03B21/14
CPC分类号： H04N9/3105 , G03B21/005 , G03B21/2073 , H04N9/3167
摘要： An image projector (8, 68) includes a light source (14) that illuminates a three-path reflective LCD assembly (25, 74) that produces images for projection by a projection lens (27). The light source produces S-polarized light rays that are received by a spectrally selective wave plate (36) that changes a first wavelength range of light to P-polarized light rays (34) and transmits without polarization change second and third wavelength ranges of light. A plate-type transflective polarizing beam splitter (40) transmits the P-polarized first wavelength range light rays and reflects S-polarized second and third wavelength range light rays (34). The P-polarized first wavelength range light rays transmit through a field lens (421) and impinge on a first reflective LCD light valve (261). The S-polarized second and third wavelength range light rays strike a pleochroic filter (48), which divides them into second and third wavelength range light rays (44, 46) that propagate through field lenses (422, 423) and impinge on respective second and third LCD light valves (262, 263). The light rays impinging on dark state pixels on the first LCD light valve are reflected without polarization direction change and return toward the light source along their original paths. However, the light rays impinging on illuminated state pixels on the first LCD light valve are reflected with a 90° change in polarization direction and are reflected toward the projection lens by the transflective polarizing beam splitter. The light rays impinging on illuminated state pixels on the second and third LCD light valves are reflected with a 90° change in polarization direction, are recombined by the pleochroic filter, and transmit through the transflective polarizing beam splitter toward the projection lens.

2. 发明申请

US20060238665A1 Color video projection system employing reflective liquid crystal display devices 有权
公开(公告)号：US20060238665A1
公开(公告)日：2006-10-26
申请号：US11397913
申请日：2006-04-03
申请人： Kurt Stahl , Jeffrey Gohman
发明人： Kurt Stahl , Jeffrey Gohman
IPC分类号： G02F1/1335
CPC分类号： H04N9/3105 , G03B21/005 , G03B21/2073 , H04N9/3167
摘要： An image projector (8, 68) includes a light source (14) that illuminates a three-path reflective LCD assembly (25, 74) that produces images for projection by a projection lens (27). The light source produces S-polarized light rays that are received by a spectrally selective wave plate (36) that changes a first wavelength range of light to P-polarized light rays (34) and transmits without polarization change second and third wavelength ranges of light. A plate-type transflective polarizing beam splitter (40) transmits the P-polarized first wavelength range light rays and reflects S-polarized second and third wavelength range light rays (34). The P-polarized first wavelength range light rays transmit through a field lens (421) and impinge on a first reflective LCD light valve (261). The S-polarized second and third wavelength range light rays strike a pleochroic filter (48), which divides them into second and third wavelength range light rays (44, 46) that propagate through field lenses (422, 423) and impinge on respective second and third LCD light valves (262, 263). The light rays impinging on dark state pixels on the first LCD light valve are reflected without polarization direction change and return toward the light source along their original paths. However, the light rays impinging on illuminated state pixels on the first LCD light valve are reflected with a 90° change in polarization direction and are reflected toward the projection lens by the transflective polarizing beam splitter. The light rays impinging on illuminated state pixels on the second and third LCD light valves are reflected with a 90° change in polarization direction, are recombined by the pleochroic filter, and transmit through the transflective polarizing beam splitter toward the projection lens.

3. 发明授权

US06517210B2 Shortened asymmetrical tunnel for spatially integrating light 有权
标题翻译：缩短不对称隧道空间整合光
公开(公告)号：US06517210B2
公开(公告)日：2003-02-11
申请号：US09827869
申请日：2001-04-06
申请人： Mark Peterson , Franc Potekev , Kurt Stahl
发明人： Mark Peterson , Franc Potekev , Kurt Stahl
IPC分类号： G03B2128
CPC分类号： H04N9/3114 , G02B27/09 , H04N9/3152 , H04N9/3173 , Y10S385/901
摘要： A multimedia projector (30) includes a light source (32) producing a nonuniform illumination pattern and a light integrating tunnel (110, 130) having parallelogram-shaped input and output apertures (132, 134) with an average diagonal dimension. The input and output apertures are spaced apart by a length dimension (136) that is less than five-times the average diagonal dimension of the apertures. A light pattern (150) propagating from the output aperture is substantially more uniform than a light pattern (146) propagating from a rectangular tunnel of the same length. Alternatively, a light pattern (164) propagating from the output aperture has substantially the same uniformity as the light pattern (146) propagating from a substantially longer rectangular tunnel.
摘要翻译：一种多媒体投影仪（30）包括产生非均匀照明图案的光源（32）和具有平均四边形形状的具有平均对角线尺寸的输入和输出孔（132,134）的光积分隧道（110,130）。输入和输出孔径间隔开小于孔的平均对角线尺寸的五倍的长度尺寸（136）。从输出孔传播的光图案（150）与从相同长度的矩形隧道传播的光图案（146）基本上更均匀。或者，从输出孔传播的光图案（164）具有与从基本上较长的矩形隧道传播的光图案（146）基本相同的均匀性。

4. 发明授权

US4230207A Disc brake pad 失效
标题翻译：碟形刹车片
公开(公告)号：US4230207A
公开(公告)日：1980-10-28
申请号：US929985
申请日：1978-08-01
申请人： Kurt Stahl
发明人： Kurt Stahl
IPC分类号： F16D65/095 , F16D65/02 , F16D65/092 , F16D65/84 , F16D69/00
CPC分类号： F16D69/00 , F16D65/02 , F16D65/092 , F16D65/84 , F16D2065/785 , F16D2069/004
摘要： A disc brake pad assembly includes a hard porcelain carrier body and a friction element affixed to the carrier body and having a work face for cooperation with a brake disc. The friction element is provided with a plurality of blind recesses which are open solely towards the work face. The assembly further includes a protective covering attached to the carrier body and extending over a rear face of the carrier body oriented away from the friction element. The protective covering extends over at least a portion of two oppositely located narrow sides which form part of the carrier body and which are spaced in a circumferential direction of the brake disc when the assembly is in operative relationship with the brake disc.
摘要翻译：盘式制动衬块组件包括坚硬的瓷器承载体和固定到承载体的摩擦元件，并具有与制动盘配合的工作面。摩擦元件设置有多个盲孔，其仅朝向工作面打开。组件还包括附接到承载体并且在承载体的背面上延伸的保护性覆盖物，其远离摩擦元件。保护罩在两个相对定位的两个窄边的至少一部分上延伸，形成承载体的一部分，并且当组件与制动盘处于操作关系时，保护罩在制动盘的圆周方向上间隔开。

5. 发明授权

US07375772B2 Color video projection system employing reflective liquid crystal display devices 有权
标题翻译：彩色视频投影系统采用反射式液晶显示装置
公开(公告)号：US07375772B2
公开(公告)日：2008-05-20
申请号：US11397913
申请日：2006-04-03
申请人： Kurt Stahl , Jeffrey A. Gohman
发明人： Kurt Stahl , Jeffrey A. Gohman
IPC分类号： G02F1/1335 , G03B21/28
CPC分类号： H04N9/3105 , G03B21/005 , G03B21/2073 , H04N9/3167
摘要： A system including a light source, a polarizing beam splitter, and first, second and third light valves is provided. The light source produces light in first, second and third wavebands in a second polarization direction. The beam splitter transmits the first waveband of light in a first polarization direction and the second and third wavebands of light in the second polarization direction. The first, second and third light valves reflect at least a portion of the respective first, second and third wavelength bands of light generally toward a projection lens.
摘要翻译：提供一种包括光源，偏振光束分离器以及第一，第二和第三光阀的系统。光源在第一，第二和第三波段中在第二偏振方向产生光。分束器在第一偏振方向上发射第一波段光，并且在第二偏振方向上发射第二和第三波带。第一，第二和第三光阀将各个第一，第二和第三波长带的至少一部分通常朝向投影透镜反射。

6. 发明授权

US07347559B2 Color video projection system employing reflective liquid crystal display devices 有权
标题翻译：彩色视频投影系统采用反射式液晶显示装置
公开(公告)号：US07347559B2
公开(公告)日：2008-03-25
申请号：US11469014
申请日：2006-08-31
申请人： Kurt Stahl , Jeffrey A. Gohman
发明人： Kurt Stahl , Jeffrey A. Gohman
IPC分类号： G03B21/00 , G03B21/26 , G03B21/28 , G02F1/1335
CPC分类号： H04N9/3105 , G03B21/005 , G03B21/2073 , H04N9/3167
摘要： Methods and apparatuses for use in image projecting are provided. One apparatus includes a transflective polarizing beam splitter, a plurality of reflective liquid crystal light valves, and a spectrally selective output device. The beam splitter is capable of receiving the wavelength bands of light and transmitting at least one wavelength band of light having a first polarization direction, and reflecting other wavelength bands of light having a second polarization direction. The light valves are capable of selectively reflecting at least portions of respective wavelength bands of lights. The spectrally selective output device is capable of receiving at least one of the portions of the wavelength band of light and changing the polarization of the portion of the first wavelength of light.
摘要翻译：提供了用于图像投影的方法和装置。一种装置包括半透射偏振分束器，多个反射型液晶光阀和光谱选择性输出装置。分束器能够接收光的波长带并透射具有第一偏振方向的光的至少一个波长带，并且反射具有第二偏振方向的光的其它波长带。光阀能够选择性地反射各个波段的光的至少一部分。光谱选择性输出装置能够接收光波长带的部分中的至少一个并改变第一波长光的部分的偏振。

7. 发明申请

US20060262540A1 Alignment structure for use with a light source and/or a light gathering reflector 有权
标题翻译：用于光源和/或聚光反射器的对准结构
公开(公告)号：US20060262540A1
公开(公告)日：2006-11-23
申请号：US11134156
申请日：2005-05-20
申请人： Kurt Stahl
发明人： Kurt Stahl
IPC分类号： G01B21/22 , G01D21/00 , B60Q3/00 , F21V15/00 , B60Q1/00
CPC分类号： F21V19/02 , G02B7/003 , G03B21/2026 , G03B21/208 , H01J5/48 , H01J9/44
摘要： Embodiments of methods, apparatuses, devices and systems associated with a pre-aligned light source for use with a light gathering reflector are disclosed.
摘要翻译：公开了与用于聚光反射器的预对准光源相关联的方法，装置，装置和系统的实施例。

8. 发明申请

US20060279714A1 Integrated light gathering reflector and optical element holder 有权
标题翻译：集成聚光反射器和光学元件支架
公开(公告)号：US20060279714A1
公开(公告)日：2006-12-14
申请号：US11149940
申请日：2005-06-10
申请人： Kurt Stahl , Brian Russell
发明人： Kurt Stahl , Brian Russell
IPC分类号： G03B21/14
CPC分类号： G03B21/2066 , G03B21/145
摘要： Embodiments of methods and apparatus for integrating a light gathering reflector and an optical component holder are disclosed.
摘要翻译：公开了用于集光反射器和光学部件保持器的方法和装置的实施例。

9. 发明授权

US07072003B2 Color video projection system employing reflective liquid crystal display devices 有权
公开(公告)号：US07072003B2
公开(公告)日：2006-07-04
申请号：US10696297
申请日：2003-10-28
申请人： Kurt Stahl , Jeffrey A. Gohman
发明人： Kurt Stahl , Jeffrey A. Gohman
IPC分类号： G02F1/1335
CPC分类号： H04N9/3105 , G03B21/005 , G03B21/2073 , H04N9/3167
摘要： An image projector (8, 68) includes a light source (14) that illuminates a three-path reflective LCD assembly (25, 74) that produces images for projection by a projection lens (27). The light source produces S-polarized light rays that are received by a spectrally selective wave plate (36) that changes a first wavelength range of light to P-polarized light rays (34) and transmits without polarization change second and third wavelength ranges of light. A plate-type transflective polarizing beam splitter (40) transmits the P-polarized first wavelength range light rays and reflects S-polarized second and third wavelength range light rays (34). The P-polarized first wavelength range light rays transmit through a field lens (421) and impinge on a first reflective LCD light valve (261). The S-polarized second and third wavelength range light rays strike a pleochroic filter (48), which divides them into second and third wavelength range light rays (44, 46) that propagate through field lenses (422, 423) and impinge on respective second and third LCD light valves (262, 263). The light rays impinging on dark state pixels on the first LCD light valve are reflected without polarization direction change and return toward the light source along their original paths. However, the light rays impinging on illuminated state pixels on the first LCD light valve are reflected with a 90° change in polarization direction and are reflected toward the projection lens by the transflective polarizing beam splitter. The light rays impinging on illuminated state pixels on the second and third LCD light valves are reflected with a 90° change in polarization direction, are recombined by the pleochroic filter, and transmit through the transflective polarizing beam splitter toward the projection lens.

10. 发明授权

US06661475B1 Color video projection system employing reflective liquid crystal display device 有权
标题翻译：彩色视频投影系统采用反射式液晶显示装置
公开(公告)号：US06661475B1
公开(公告)日：2003-12-09
申请号：US09535427
申请日：2000-03-23
申请人： Kurt Stahl , Jeffrey A. Gohman
发明人： Kurt Stahl , Jeffrey A. Gohman
IPC分类号： G02F11335
CPC分类号： H04N9/3105 , G03B21/005 , G03B21/2073 , H04N9/3167
摘要： An image projector (8, 68) includes a light source (14) that illuminates a three-path reflective LCD assembly (25, 74) that produces images for projection by a projection lens (27). The light source produces S-polarized light rays that are received by a spectrally selective wave plate (36) that changes a first wavelength range of light to P-polarized light rays (34) and transmits without polarization change second and third wavelength ranges of light. A plate-type transflective polarizing beam splitter (40) transmits the P-polarized first wavelength range light rays and reflects S-polarized second and third wavelength range light rays (34). The P-polarized first wavelength range light rays transmit through a field lens (421) and impinge on a first reflective LCD light valve (261). The S-polarized second and third wavelength range light rays strike a pleochroic filter (48), which divides them into second and third wavelength range light rays (44, 46) that propagate through field lenses (422, 423) and impinge on respective second and third LCD light valves (262, 263). The light rays impinging on dark state pixels on the first LCD light valve are reflected without polarization direction change and return toward the light source along their original paths. However, the light rays impinging on illuminated state pixels on the first LCD light valve are reflected with a 90° change in polarization direction and are reflected toward the projection lens by the transflective polarizing beam splitter. The light rays impinging on illuminated state pixels on the second and third LCD light valves are reflected with a 90° change in polarization direction, are recombined by the pleochroic filter, and transmit through the transflective polarizing beam splitter toward the projection lens.
摘要翻译：图像投影仪（8,68）包括照亮三路反射LCD组件（25,74）的光源（14），其产生用于由投影透镜（27）投影的图像。光源产生由频谱选择波片（36）接收的S偏振光，其将第一波长范围的光改变为P偏振光（34），并且在没有偏振的情况下透射光的第二和第三波长范围的光。板式半透射偏振光束分离器（40）透射P偏振的第一波长范围的光线并反射S偏振的第二和第三波长范围的光线（34）。 P偏振的第一波长范围的光线通过场透镜（421）透射并撞击在第一反射型LCD光阀（261）上。 S偏振的第二和第三波长范围的光线撞击多色滤光器（48），其将它们分成通过场透镜（422,423）传播的第二和第三波长范围的光线（44,46）并且撞击在相应的第二和第三液晶光阀（262,263）。入射到第一LCD光阀上的暗态像素的光线在没有偏振方向变化的情况下被反射，并沿其原始路径朝向光源返回。然而，照射在第一LCD光阀上的照明状态像素上的光线以偏振方向的90°变化反射，并且通过半透射偏振分束器向投影透镜反射。入射到第二和第三LCD光阀上的照明状态像素上的光线以偏振方向的90°变化反射，被双色滤光片重新组合，并透过半透射偏振分束器朝投影透镜透射。

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