公开(公告)号：US06217173B1

公开(公告)日：2001-04-17

申请号：US09195967

申请日：1998-11-19

申请人： Junejei Huang ,  Fang Chuan Ho

发明人： Junejei Huang ,  Fang Chuan Ho

IPC分类号： G03B2114

CPC分类号： G03B21/14 ,  G03B21/2073

摘要： A high-efficiency polarized illuminating system for a liquid crystal projector is disclosed. The illuminating system is easy to fabricate and set up, with a low cost since, unlike in the prior art, no particular component is needed in the illuminating system and the components used in the system does not require a highly precise alignment. The illuminating system comprises: A light source device for providing a light beam; a polarizing beam-splitting device for converting the light beam into a p-polarized light beam and an s-polarized light beam; a first lens plate for converging the p-polarized light beam and the s-polarized light beam into a plurality of light spots; a polarization rotating device for optionally passing the plurality of light spots formed by the p-polarized light beam or the s-polarized light beam to output the plurality of light spots with a certain polarization; and a second lens plate for projecting the plurality of light spots to form a plurality of light beams having the certain polarization, in which the plurality of light beams are overlapped on a converging lens to form a polarized light beam that is converged on a liquid crystal panel.

摘要翻译： 公开了一种用于液晶投影仪的高效偏振照明系统。 照明系统以低成本容易地制造和设置，因为与现有技术不同，在照明系统中不需要特定的部件，并且系统中使用的部件不需要高精度对准。 所述照明系统包括：用于提供光束的光源装置; 用于将光束转换成p偏振光束和s偏振光束的偏振光束分离装置; 第一透镜板，用于将p偏振光束和s偏振光束会聚到多个光点中; 偏振旋转装置，用于可选地使由p偏振光束或s偏振光束形成的多个光点通过，以一定的偏振度输出多个光点; 以及第二透镜板，用于投影多个光点以形成具有一定偏振的多个光束，其中多个光束重叠在会聚透镜上以形成会聚在液晶上的偏振光束 面板。

公开(公告)号：US06203160B1

公开(公告)日：2001-03-20

申请号：US09474736

申请日：1999-12-29

申请人： Fang Chuan Ho

发明人： Fang Chuan Ho

IPC分类号： G03B2114

CPC分类号： G02B27/283 ,  G02B26/008 ,  G02B27/1026 ,  G02B27/1033 ,  G02B27/147 ,  H04N9/3114

摘要： A high efficiency liquid crystal display projection system is provided, which can effectively use the energy of s-polarized light and p-polarized light emitted from the light source. The high efficiency liquid crystal display projection system can simplify the structure of light splitting/combining prism by using the feature that the effective optical aperture of a reflective liquid crystal light valve is larger than 85%. Using a broadband polarizing beam-splitting prism to combine/split light, the volume of the liquid crystal display projection system is significantly reduced. The high efficiency liquid crystal display projection system comprises: a dichroic module for sequentially separating a white light into three primary-color lights; a broadband polarizing beam-splitting device for respectively transmitting and reflecting p-polarized light and s-polarized light of the three primary-color lights; two fast time response liquid crystal light valves for receiving and reflecting respectively the p-polarized light and the s-polarized light of the three primary-color lights so that the p-polarized light is converted to s-polarized light and the s-polarized light is converted to p-polarized light; and projection lenses for projecting the light beam to a screen after the s-polarized light and the p-polarized light reflected by the liquid crystal valves are respectively reflected and transmitted by the broadband polarizing beam-splitting device.

摘要翻译： 提供了一种高效率的液晶显示投影系统，可以有效地利用从光源发出的s偏振光和p偏振光的能量。 高效液晶显示投影系统可以通过使用反射型液晶光阀的有效光学孔径大于85％的特征来简化分光/组合棱镜的结构。 使用宽带偏振光束分离棱镜来组合/分离光，液晶显示投影系统的体积显着降低。 高效液晶显示投影系统包括：用于将白光顺序地分离成三原色光的二向色模块; 用于分别发射和反射三原色光的p偏振光和s偏振光的宽带偏振光束分离装置; 两个快速时间响应液晶光阀，用于分别接收和反射三个原色光的p偏振光和s偏振光，使得p偏振光转换成s偏振光和s偏振光 光转换成p偏振光; 以及用于在s偏振光和由液晶阀反射的p偏振光之后将光束投射到屏幕的投影透镜分别被宽带偏振光束分离装置反射和透射。

公开(公告)号：US06419363B1

公开(公告)日：2002-07-16

申请号：US09558881

申请日：2000-04-26

申请人： Fang Chuan Ho ,  Yi-Jen Tsou ,  Rong-Ho Lee ,  Shih-Ping Lee ,  Jinn-Chou Yoo

发明人： Fang Chuan Ho ,  Yi-Jen Tsou ,  Rong-Ho Lee ,  Shih-Ping Lee ,  Jinn-Chou Yoo

IPC分类号： G03B2114

CPC分类号： G03B21/14 ,  G03B21/2073 ,  G03B33/12

摘要： A field sequential dichroic light valve using ferro-electric liquid crystal components and multi-layer thin film broadband polarizing beam-splitting devices as an optical switch. The field sequential dichroic light valve has a fast time response and a memory function, as well as a switch frequency larger than 180 Hz and an optical transmittance larger than 90%. Accordingly, the field sequential dichroic light valve can effectively switch R, G, B-colored light beams in time sequence, and can be applied to a full-color projection display system.

摘要翻译： 一种使用铁电液晶元件和多层薄膜宽带偏振光束分离装置作为光开关的场顺序二向色光阀。 场顺序二向色光阀具有快速的时间响应和记忆功能，以及大于180Hz的开关频率和大于90％的光透射率。 因此，场顺序的二向色光阀可以有效地按时间顺序切换R，G，B色光束，并且可以应用于全色投影显示系统。

公开(公告)号：US06398363B1

公开(公告)日：2002-06-04

申请号：US09524051

申请日：2000-03-13

申请人： Fang Chuan Ho ,  Jinn-Chou Yoo ,  Wei Shen

发明人： Fang Chuan Ho ,  Jinn-Chou Yoo ,  Wei Shen

IPC分类号： G03B2114

CPC分类号： G03B33/12 ,  G03B21/208 ,  G03B33/08

摘要： A field sequential color projection display system, which has high brightness, high accuracy and compact size, and is light and energy saving. The field sequential color projection system comprises: a field sequential beam splitting/combining light valve module including three light valves, which can be controlled by applied energy field, for outputting polarized light of three primary colors in time sequence; a frame sequential display module for respectively displaying frames of three primary colors corresponding to the polarized light of three primary colors output in time sequence, wherein the polarized light passes through the frame sequential display module; a projection lens module for projecting the polarized light passing through the frame sequential display module onto a screen to produce a full color image.

摘要翻译： 场景彩色投影显示系统，亮度高，精度高，体积小巧，节能轻盈。 场顺序彩色投影系统包括：场顺序光束分离/组合光阀模块，包括可由施加的能量场控制的三个光阀，用于以时间顺序输出三原色的偏振光; 帧顺序显示模块，用于分别显示对应于按时间顺序输出的三原色的偏振光的三原色帧，其中偏振光通过帧顺序显示模块; 投影透镜模块，用于将通过框架顺序显示模块的偏振光投影到屏幕上以产生全色图像。

公开(公告)号：US06885403B2

公开(公告)日：2005-04-26

申请号：US09749389

申请日：2000-12-28

申请人： Fang Chuan Ho ,  Cheng-Wei Chu

发明人： Fang Chuan Ho ,  Cheng-Wei Chu

IPC分类号： G02B27/14 ,  H04N9/31 ,  H04N9/07 ,  H04N9/097

CPC分类号： G02B27/1013 ,  G02B27/145 ,  H04N9/3102

摘要： A color separation beam splitter for projectors is provided, which comprises a plurality of prisms connected with each other and three optical interference filters having different wavelength ranges respectively formed on side surfaces of the plurality of prisms. The three optical interference filters include a yellow color reflective dichroic mirror, a red color reflective dichroic mirror, and a blue color reflective dichroic mirror to filter out the yellow light and provide three primary color lights with high color purity. Moreover, by reflecting a light beam twice, the number of layers of dichroic mirror can be reduced. The color purity of the light is increased after reflected twice by the dichroic mirrors. Moreover, configuration of a liquid crystal projector by use of this prism assembly as color separation unit is also disclosed.

摘要翻译： 提供了一种用于投影仪的分色分束器，其包括彼此连接的多个棱镜和分别形成在多个棱镜的侧表面上的具有不同波长范围的三个光学干涉滤光器。 三个光学干涉滤光器包括黄色反射分色镜，红色反射分色镜和蓝色反射分色镜，以滤出黄光并提供高纯度的三原色光。 此外，通过反射光束两次，可以减少分色镜的层数。 二色反射镜反射两次后，光的色纯度增加。 此外，还公开了通过使用该棱镜组件作为分​​色单元的液晶投影仪的配置。

公开(公告)号：US5786937A

公开(公告)日：1998-07-28

申请号：US682447

申请日：1996-07-17

申请人： Cheng-Wei Chu ,  Yi-Jen Tsou ,  Fang Chuan Ho

发明人： Cheng-Wei Chu ,  Yi-Jen Tsou ,  Fang Chuan Ho

IPC分类号： G02B27/14 ,  H04N9/31 ,  G02B1/10 ,  B05D1/36 ,  G02B5/28

CPC分类号： G02B27/1073 ,  G02B27/142 ,  G02B27/145 ,  H04N9/3105 ,  H04N9/315

摘要： A thin-film color-selective beam splitter and the method of fabricating the same are disclosed. The method includes the steps of: (i) forming a main prism by a pre-selected material, and deciding a first base angle and a second base angle according to the substance and coating characteristics of the pre-selected material; (ii) coating a first multilayer film and a second multilayer film on two slopes of the main prism, in which tilt angles for coating the first multilayer film and the second multilayer film and tilt angles of light entering and emerging the main prism are different, so that spectra of the first multilayer film and the second multilayer film are different, and the first multilayer film can be a red reflective film and the second multilayer film can be a blue reflective film; and (iii) using the pre-selected material to form interface prisms, and adhering the interface prisms to the main prism, so that light can perpendicularly enter and emerge from surfaces of the prism. Moreover, the method may include a further step of: coating a filtering film on an emerging interface of the main prism for green light. A thin-film color-selective beam splitter can be formed by the above method with a single coating process and can serve as a tri-color beam splitter.

摘要翻译： 公开了一种薄膜彩色选择性分束器及其制造方法。 该方法包括以下步骤：（i）通过预先选择的材料形成主棱镜，并根据预选材料的物质和涂层特性确定第一底角和第二底角; （ii）在主棱镜的两个斜面上涂覆第一多层膜和第二多层膜，其中用于涂覆第一多层膜和第二多层膜的倾斜角度以及进入和离开主棱镜的光的倾斜角度不同， 使得第一多层膜和第二多层膜的光谱不同，第一多层膜可以是红色反射膜，第二多层膜可以是蓝色反射膜; 和（iii）使用预先选择的材料形成界面棱镜，并将界面棱镜粘附到主棱镜，使得光可以垂直地进入并从棱镜的表面出射。 此外，该方法可以包括另外的步骤：在主棱镜的出现界面上涂覆滤光膜用于绿光。 可以通过上述方法通过单次涂覆工艺形成薄膜选色分束器，并且可以用作三色分束器。

公开(公告)号：US5688608A

公开(公告)日：1997-11-18

申请号：US459475

申请日：1995-06-02

申请人： Rung-Ywan Tsai ,  Fang Chuan Ho

发明人： Rung-Ywan Tsai ,  Fang Chuan Ho

IPC分类号： C23C14/06 ,  C23C14/54 ,  G02B1/11 ,  B32B15/00

CPC分类号： G02B1/115 ,  C23C14/06 ,  C23C14/546 ,  C23C14/548 ,  Y10T428/265

摘要： A hard and durable single-layer or multilayer artireflection coating for use with a high refractive-index IR transparent substrate is provided. The coating is prepared by concurrent deposition of TiO.sub.2 and MgF.sub.2 with the reactive ion-assistance on the IR transparent substrate within a single vacuum chamber. The refractive-index of this film is adjustable by varying the relative deposition rate of the two materials (i.e. controlling the ratio of the materials) to optimize the transmittance of the incident IR irradiation. The opitical thickness of each film of the single-layer and multilayer antireflection coatings is one-quarter wavelength of the IR irradiation.

摘要翻译： 提供了与高折射率IR透明基板一起使用的耐用耐用的单层或多层反射涂层。 涂层通过在单个真空室内在IR透明基板上同时沉积TiO 2和MgF 2与反应离子辅助来制备。 该膜的折射率可以通过改变两种材料的相对沉积速率（即控制材料的比例）来调节，以优化入射的IR照射的透射率。 单层和多层抗反射涂层的每个膜的临界厚度是IR照射的四分之一波长。