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公开(公告)号：US5748376A
公开(公告)日：1998-05-05
申请号：US633449
申请日：1996-04-17
IPC分类号： G02B5/30 , G02B27/28 , G02F1/13 , G02F1/1335 , G02F1/13357 , G03B21/10 , H04N5/74 , G02B27/14 , F21V7/04
CPC分类号： G02F1/13362 , H04N5/7441
摘要： A liquid-crystal projection display system with higher efficiency is provided. The liquid-crystal projection display system comprises a double-layer square-pillar-like integrator, including an inner layer and an outer layer, having a polarization-separating thin film formed between the inner layer and the outer layer. The system also includes a converging light source for generating light converged at a point near one end surface of the double-layer square-pillar-like integrator, so that most light emitted from the light source enters the double-layer square-pillar-like integrator, and different polarized light is transmitted by being totally reflected off of surfaces of the inner layer and the outer layer respectively. A first lens is provided for forming real light spots on an image plane from virtual light spots formed by totally reflecting the different polarized light transmitted in the double-layer square-pillar-like integrator. A polarization rotator is located at the image plane, for rotating one of the polarizations of the real light spots, while keeping another one of the polarizations unchanged, so that the polarization angles of all the real light spots are identical. A second lens is provided for evenly converging and projecting light beams from the light spots with an identical linear polarization to overlay on an object.
摘要翻译： 提供了一种效率更高的液晶投影显示系统。 液晶投影显示系统包括具有形成在内层和外层之间的偏振分离薄膜的内层和外层的双层方柱状积分器。 该系统还包括用于产生会聚在双层方柱状积分器的一个端面附近的点的会聚光源，使得从光源发射的大多数光进入双层正方形柱状 积分器，并且分别通过从内层和外层的表面完全反射而透射不同的偏振光。 提供第一透镜，用于在通过全反射在双层方柱状积分器中透射的不同偏振光形成的虚拟光点在图像平面上形成真实光斑。 偏振旋转器位于图像平面处，用于旋转实际光斑的偏振之一，同时保持另一个极化不变，使得所有实际光点的偏振角相同。 提供第二透镜，用于使来自具有相同线性偏振的光斑的光束均匀地会聚和投射以覆盖在物体上。
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公开(公告)号：US06705735B1
公开(公告)日：2004-03-16
申请号：US09266834
申请日：1999-03-12
IPC分类号： G03B2128
CPC分类号： H04N9/3114
摘要： The present invention discloses a projecting device without prisms. The projecting device comprises a light source for generating an incident light beam, a reflective image module comprising a plurality of reflective surfaces which can be separately controlled to generate the image-containing reflected light beam, a first lens set for concentrating the incident light beam, a reflective mirror for reflecting the incident light beam and concentrating the light beam through the first lens set onto the image module, and a second lens set installed between the light source and the reflective mirror for shortening an optical path from the light source to the reflective mirror. The optical path of the incident light beam reflected from the image module intersects a plane formed by the optical paths of the incident light beam from the light source to the reflective mirror and from the reflective mirror to the image module at one point, thus interference of the light beams is prevented.
摘要翻译： 本发明公开了一种无棱镜的投影装置。 投影装置包括用于产生入射光束的光源，反射图像模块，包括可以单独控制以产生包含图像的反射光束的多个反射表面，用于聚集入射光束的第一透镜组， 用于反射入射光束并将光束通过第一透镜组聚集到图像模块上的反射镜，以及安装在光源和反射镜之间的第二透镜组，用于缩短从光源到反射的光路 镜子。 从图像模块反射的入射光束的光路与从光源到反射镜的入射光束的光路和从反射镜到图像模块的一点形成的平面相交，从而干扰 防止了光束。
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公开(公告)号：US07677962B2
公开(公告)日：2010-03-16
申请号：US11680998
申请日：2007-03-01
申请人： Chong-Min Chang
发明人： Chong-Min Chang
CPC分类号： H05K7/20209 , H05K7/20181
摘要： A filtering unit for receiving an electronic device. The filtering unit includes a housing, a filter, a fan, a detector, and a controller. The housing includes an inlet. The filter is disposed at the inlet of the housing. The fan is disposed in the housing. The detector detects the number of particles in the filter. The controller is coupled to the fan and the detector. When the number of the particles in the filter exceeds a threshold value, the detector outputs a signal to the controller to change the rotating direction of the fan.
摘要翻译： 一种用于接收电子设备的滤波单元。 过滤单元包括壳体，过滤器，风扇，检测器和控制器。 外壳包括一个入口。 过滤器设置在壳体的入口处。 风扇设置在外壳中。 检测器检测过滤器中的颗粒数。 控制器耦合到风扇和检测器。 当过滤器中的颗粒数超过阈值时，检测器向控制器输出信号以改变风扇的旋转方向。
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公开(公告)号：US07079197B2
公开(公告)日：2006-07-18
申请号：US10828412
申请日：2004-04-20
申请人： Chong-Min Chang
发明人： Chong-Min Chang
IPC分类号： G02F1/1335
CPC分类号： G02B27/283 , H04N9/3167
摘要： A light source module, applicable in a projection display system, comprises a light source, a light-selection device and a reflective device. The light source provides an incident beam. The light-selection device is arranged on a light path of the incident beam, for passing one part of the incident beam through and reflecting the other parts to be a reflective beam. The reflective device is arranged between the light source and the light-selection device, for reflecting the reflective beam back to and passing through the light-selection device.
摘要翻译： 可应用于投影显示系统的光源模块包括光源，光选择装置和反射装置。 光源提供入射光束。 光选择装置布置在入射光束的光路上，用于使一部分入射光束通过并将其它部分反射成反射光束。 反射装置设置在光源和光选择装置之间，用于将反射光束反射回并通过光选择装置。
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公开(公告)号：US6124952A
公开(公告)日：2000-09-26
申请号：US38276
申请日：1998-03-11
申请人： Han-Ping Shieh , Jinn-Chou Yoo , Der-Rong Hsu , Chong-Min Chang
发明人： Han-Ping Shieh , Jinn-Chou Yoo , Der-Rong Hsu , Chong-Min Chang
摘要： A magnification-variation scanner modifies the resolution merely by changing the object distance and the image distance, with a constant focal distance. The scanner includes a light source, an object lens, an image detector, a holder for carrying the object lens, an optical path delay and a driver. The optical path delay can be located at the midway of the light path from the light source to the object lens, thereby modifying the optical path between the object surface and the object lens. In accompaniment with the movement of the object lens, the dimensions of the image projected over the image detector can be modified. The resolution can therefore be modified. The driver connects between the holder and the optical path delay. As the movements of the holder and the optical path delay are controlled by the driver, the optical path from the object surface to the object lens and that from the object lens to the image detector can be modified according to the equations of ##EQU1##
摘要翻译： 放大倍率扫描仪仅通过以恒定焦距改变物体距离和图像距离来修改分辨率。 扫描仪包括光源，物镜，图像检测器，用于携带物镜的保持器，光路延迟和驱动器。 光路延迟可以位于从光源到物镜的光路的中间，从而修改物体表面和物镜之间的光路。 伴随着物镜的移动，可以改变投影在图像检测器上的图像的尺寸。 因此可以修改分辨率。 驱动器连接保持器和光路延迟。 由于保持器的移动和光路延迟由驱动器控制，所以从物体表面到物镜以及从物镜到图像检测器的光路可以根据
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公开(公告)号：US20070121084A1
公开(公告)日：2007-05-31
申请号：US11563683
申请日：2006-11-28
申请人： Chong-Min Chang
发明人： Chong-Min Chang
IPC分类号： G03B21/26
CPC分类号： G03B21/2013 , G03B21/208 , H04N5/7416
摘要： A projector includes a housing, a first light source installed inside the housing for generating light beams, a second light source installed inside the housing for generating light beams, a first refractive element installed inside the housing for refracting the light beams generated by the first light source, a second refractive element installed inside the housing for refracting the light beams generated by the second light source to a direction parallel to a direction of the light beams refracted by the first refractive element substantially, a light pipe installed inside the housing for uniformizing light beams from the first refractive element and the second refractive element, and an image device installed inside the housing for processing the uniformized light from the light pipe and for projecting the processed light to form an image.
摘要翻译： 投影仪包括壳体，安装在壳体内用于产生光束的第一光源，安装在壳体内用于产生光束的第二光源，安装在壳体内部的第一折射元件，用于折射由第一光产生的光束 源，安装在壳体内部的第二折射元件，用于将由第二光源产生的光束折射到基本上由第一折射元件折射的光束的方向平行的方向;安装在壳体内的光管，用于使光均匀化 来自第一折射元件和第二折射元件的光束，以及安装在壳体内部用于处理来自光管的均匀化光并用于投影处理后的光以形成图像的图像装置。
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公开(公告)号：US06290374B1
公开(公告)日：2001-09-18
申请号：US09602698
申请日：2000-06-24
IPC分类号： F21V500
CPC分类号： F21V5/04 , F21S43/26 , F21W2111/02 , F21Y2115/10
摘要： A traffic signal lamp includes a plurality of light emitting diodes and two lens sets. A first lens set has an entrance surface comprising a plurality of convex cylindrical surfaces running in a vertical direction and an exit surface comprising a plurality of slanted surface segments running in a horizontal direction. A second lens set has an entrance surface comprising a plurality of elongated concave cylindrical surfaces running in the vertical direction and an convex exit surface having a small curvature. The first lens set collimates light in the horizontal direction and limits light in a viewing angle in the vertical direction. The second lens set redistributes light uniformly in a viewing angle in the horizontal direction.
摘要翻译： 交通信号灯包括多个发光二极管和两个透镜组。 第一透镜组具有包括在垂直方向上延伸的多个凸形圆柱形表面的入射表面和包括在水平方向上延伸的多个倾斜表面段的出射表面。 第二透镜组具有包括在垂直方向上延伸的多个细长的凹形圆柱形表面和具有小曲率的凸出射表面的入射表面。 第一透镜组沿水平方向准直光，并在垂直方向上限制光的视角。 第二透镜组在水平方向上以视角均匀地重新分布光。
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