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公开(公告)号：USRE39243E1
公开(公告)日：2006-08-22
申请号：US09985390
申请日：2001-11-02
CPC分类号： G02B27/285 , G02B27/283 , H04N9/3105 , H04N9/3167
摘要： Two polarization conversion element arrays are disclosed. Each polarization conversion element array is composed of a plurality of polarization conversion elements for converting light incident upon the polarization conversion element array to a linearly polarized light beam with a predetermined polarization direction. The plurality of polarization conversion elements are disposed opposite to each other with a predetermined space provided between at about the center of the light-outgoing surface of a lens array in the direction of arrangement. Of the light beams (s-polarized+p-polarized light beams) gathered by the lens array, light beam that is not incident upon the polarization conversion element and passes through the predetermined space is a light beam including a predetermined polarized light beam (s-polarized light beam) that is primarily made to leave the array 320a and an ineffective polarized light beam (p-polarized light beam). Of the light passing through and leaving the space, the required polarized light beam alone can be made to leave as an effective light beam by providing a polarization plate or the like at the light-outgoing side of the space.
摘要翻译： 公开了两个偏振转换元件阵列。 每个偏振转换元件阵列由多个偏振转换元件组成，用于将入射到偏振转换元件阵列上的光转换成具有预定偏振方向的线偏振光束。 多个偏振转换元件以设置在透镜阵列的光出射表面的中心附近的布置方向彼此相对地设置有预定的空间。 在由透镜阵列收集的光束（s偏振+ p偏振光束）中，未入射到偏振转换元件并通过预定空间的光束是包括预定偏振光束（s 偏振光束），其主要是离开阵列320a和无效偏振光束（p偏振光束）。 在通过和离开空间的光中，通过在空间的光出射侧提供偏振板等，可以使所需的偏振光束单独地留下作为有效的光束。
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2.发明授权公开(公告)号：US06856375B2
公开(公告)日：2005-02-15
申请号：US09925315
申请日：2001-08-10
IPC分类号： G02B5/30 , G02F1/13 , G02F1/1335 , G02F1/13363 , G03B21/00 , G09F9/00 , H04N5/74 , H04N9/31 , G03B19/18
CPC分类号： H04N9/3105 , G02F1/133528 , H04N5/7441 , H04N9/3144 , H04N9/3167
摘要： The invention provides a liquid crystal light valve that makes it possible to increase the life of a polarizer at a light-exiting-surface side of the liquid crystal light valve by reducing the burden thereon, and a projection display device that incorporates the liquid crystal light valve. In liquid crystal light valves that modulate incident light in accordance with image information, at least two corresponding polarizers are provided respectively at the light-exiting-surface sides of liquid crystal panels.
摘要翻译： 本发明提供一种液晶光阀，其可以通过减轻其上的负担来增加在液晶光阀的出光面侧的偏振片的寿命，并且将投射显示装置结合了液晶光 阀。 在根据图像信息调制入射光的液晶光阀中，分别在液晶面板的光出射面侧设置至少两个对应的偏振器。
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公开(公告)号：US06669345B2
公开(公告)日：2003-12-30
申请号：US10229031
申请日：2002-08-28
申请人： Akitaka Yajima
发明人： Akitaka Yajima
IPC分类号： G03B2114
CPC分类号： G02B27/123 , G02B27/1046 , G02B27/145 , G02B27/149 , H04N5/74 , H04N5/7441 , H04N9/3105
摘要： A projector including an illumination system that illuminates a modulation device modulating light according to image information. The illumination system includes a light source that emits a light beam along a light source optical axis, a first lens array having a plurality of small lenses which divide the light beam emitted from the light source into a plurality of partial light beams, a superimposing lens that superimposes the plurality of partial light beams emitted from the first lens array on the modulation device, and an entrance angle reducing system disposed between the superimposing lens and the modulation device. The entrance angle reducing system reduces an entrance angle of light rays, which are emitted from the superimposing lens and enter the modulation device, compared with an illumination system without the entrance angle reducing system.
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公开(公告)号：USRE38084E1
公开(公告)日：2003-04-22
申请号：US09774645
申请日：2001-02-01
IPC分类号： G03B2114
CPC分类号： G02B27/1026 , G02B27/1046 , G02B27/1073 , G02B27/145 , G02B27/149 , G02B27/283 , G02B27/285 , G02F1/13394 , H04N5/7441 , H04N9/3105 , H04N9/317
摘要： An output light from an light source lamp unit 8 in a projection-type display apparatus illuminates liquid-crystal light valves 925R, 925G and 925B for three colors via an integrator optical system 923. A superimposing lens 930 that is a component of the integrator optical system 923 as a uniform illumination optical system is arranged such that the mounting position of the superimposing lens 930 is fine-adjustable in a direction orthogonal to an optical axis 1a. By fine-adjusting the mounting position of the superimposing lens 930, the position of an illumination area B is adjusted such that the illumination area includes the image forming area A of the liquid-crystal light valve. It is not necessary to assure a wide margin around the image forming area A to cover the offset of the position of the illumination area B. As a result, the utilization of illumination light is heightened and a bright projected image results.
摘要翻译： 投影型显示装置中的来自光源灯单元8的输出光经由积分光学系统923照射三色的液晶光阀925R，925G，925B。作为积分器光学部件的重叠透镜930 作为均匀照明光学系统的系统923被布置成使得重叠透镜930的安装位置在与光轴1a正交的方向上是微调的。 通过微调重叠透镜930的安装位置，调节照明区域B的位置，使得照明区域包括液晶光阀的图像形成区域A. 不需要在图像形成区域A周围保证大的范围来覆盖照明区域B的位置的偏移。结果，提高了照明光的利用并且产生了明亮的投影图像。
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公开(公告)号：US06523962B2
公开(公告)日：2003-02-25
申请号：US10060847
申请日：2002-01-29
申请人： Akitaka Yajima
发明人： Akitaka Yajima
IPC分类号： G03B2100
CPC分类号： H04N9/3105 , G02B27/283 , G02B27/285 , H04N5/7441 , H04N9/3167
摘要： Platelike first transparent members 321 and platelike second transparent members 322 are prepared. Each first transparent member has substantially parallel first and second surfaces (film forming surfaces). A polarization splitting film 331 is formed on the first film forming surface. A reflecting film 332 is formed on the second film forming surface. The films are not formed on the surfaces of the second transparent members 322. A plurality of the first transparent members 321 and a plurality of the second transparent members 322 are adhered alternately. A block is cut from the so-adhered transparent members at a prescribed angle to the surfaces and the cut surfaces thereof are polished to obtain a polarization beam splitter array 320.
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公开(公告)号：US6142634A
公开(公告)日：2000-11-07
申请号：US912566
申请日：1997-08-18
IPC分类号： G02F1/13 , G02B3/00 , G02B27/10 , G02B27/18 , G02B27/28 , G02F1/09 , G02F1/1335 , G02F1/13357 , G02F1/1339 , G03B21/14 , H04N5/74 , H04N9/31
CPC分类号： G02B3/0056 , G02B27/1026 , G02B27/1046 , G02B27/145 , G02B27/149 , G02B27/283 , G02B27/285 , G02B3/0062 , G02F1/09 , G02F1/13394 , H04N9/3105 , H04N9/3167 , H04N9/317 , H04N5/7441
摘要： A projection-type display apparatus in accordance with the invention reduces the margin formed around the image forming range of the light valves, and forms a bright projected image. Emitted light from a light source lamp unit of a projection-type display apparatus illuminates liquid crystal light valves of each color via an integrator optical system. First and second lens plates of an integrator optical system that serves as a uniform illuminating optical system are disposed such that the attachment position thereof is capable of fine adjustment in a direction vertical to the optical axis. By performing fine adjustment of the attachment position of these, the forming position of the illumination range B can be adjusted to include the image forming range A of the liquid crystal light valves. Accordingly, there is no need to provide a wide margin around the image forming range A, taking shifting of the forming position of the illumination range B into consideration. Thus, efficient usage of the illumination light can be increased, thereby improving the brightness of the projected image.
摘要翻译： 根据本发明的投影型显示装置减少了围绕光阀的图像形成范围形成的边缘，并且形成明亮的投影图像。 投影型显示装置的光源灯单元的发光通过积分光学系统照射各颜色的液晶光阀。 用作均匀照明光学系统的积分器光学系统的第一和第二透镜板被布置成使得其安装位置能够在垂直于光轴的方向上进行微调。 通过对其的安装位置进行微调，可以将照明范围B的形成位置调整为包括液晶光阀的图像形成范围A. 因此，考虑到照明范围B的形成位置的移动，不需要在成像范围A周围提供较大的余量。 因此，可以提高照明光的有效使用，从而提高投影图像的亮度。
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公开(公告)号：US6141150A
公开(公告)日：2000-10-31
申请号：US117645
申请日：1998-08-03
CPC分类号： G02B27/149 , G02B27/1073 , G02B27/145 , G02B5/04
摘要： At least one of four rectangular prisms in a dichroic prism is made longer than the other rectangular prisms. Parts of the rectangular surfaces of the long rectangular prisms partially protrude from the rectangular surfaces of the other rectangular prisms in the longitudinal direction. The protruding parts of the rectangular surfaces of the long rectangular prisms are not provided with a dichroic film. Such a construction makes it possible to prevent return light, which returns from the light emitting surface side of the dichroic prism and the dichroic prism, from emitting again from the light emitting surface.
摘要翻译： PCT No.PCT / JP97 / 04507 Sec。 371日期1998年8月3日 102（e）1998年8月3日PCT 1997年12月8日PCT二分色棱镜中的四个矩形棱镜中的至少一个比其他矩形棱镜长。 长矩形棱镜的矩形表面的一部分从纵向方向上的其他矩形棱镜的矩形表面部分地突出。 长矩形棱镜的矩形表面的突出部分不具有二向色膜。 这种结构使得可以防止从二向色棱镜和二向色棱镜的发光表面侧返回的返回光再次从发光表面发射。
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公开(公告)号：USRE36850E
公开(公告)日：2000-09-05
申请号：US118182
申请日：1998-07-17
申请人： Tadaaki Nakayama , Yoshitaka Itoh , Akitaka Yajima
发明人： Tadaaki Nakayama , Yoshitaka Itoh , Akitaka Yajima
IPC分类号： G03B21/14
摘要： A projection-type display apparatus includes a light source, a uniform illumination optical system, a color separating system for separating a white light beam emitted from the uniform illumination optical system into three color beams, three liquid crystal panels for respectively modulating each of the separated color beams, a light guide system located on an optical path of the color beam having the longest optical path among the separated color beams, a dichroic prism for synthesizing the beams modulated through the liquid crystal panels, and a projection lens for projecting the synthesized and modulated beam onto a screen. The uniform illumination optical system Is provided with a uniform illumination optical device for converting the white light beam emitted from the light source into a uniform rectangular beam. Since the dichroic prism, which is an optical element that is rotationally symmetrical about the chief axis of a projection optical system, is employed as a color synthesizing system, and the uniform illumination optical device for restricting unevenness in color and luminous intensity is incorporated in the system, it is possible to realize a display apparatus which causes little unevenness in color and luminous intensity and which has a high illumination efficiency.
摘要翻译： 投影式显示装置包括光源，均匀照明光学系统，用于将从均匀照明光学系统发射的白色光束分离为三色光束的分色系统，三个液晶面板，用于分别调制分离的 彩色光束，位于分离的彩色光束中具有最长光路的彩色光束的光路上的光导系统，用于合成通过液晶面板调制的光束的二向色棱镜和用于投影合成的和 调制光束到屏幕上。 均匀照明光学系统设置有用于将从光源发射的白光束转换为均匀矩形光束的均匀照明光学装置。 由于使用作为投影光学系统的主轴旋转对称的光学元件的二向色棱镜作为颜色合成系统，并且将用于限制颜色和发光强度不均匀的均匀照明光学装置并入 系统，可以实现几乎不产生颜色和发光强度不均匀并且具有高照明效率的显示装置。
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公开(公告)号：US6095653A
公开(公告)日：2000-08-01
申请号：US30451
申请日：1998-02-24
申请人： Akitaka Yajima
发明人： Akitaka Yajima
CPC分类号： G03B33/12 , G02B27/1046 , G02B27/1073 , G02B27/145 , G02B27/149 , H04N9/3105 , H04N9/312 , H04N9/3141 , H04N9/3144 , H04N9/317 , H04N9/3182
摘要： A projection-type display apparatus in which the entry of light rays to the back side of liquid crystal light valves from dichroic prism that composes optical system light synthesizer is prevented. To this end, a projection display according to the present invention preferably includes a color synthesizer for combining colored and modulated light beams, comprising: a square column dichroic prism composed of four triangle prisms having equal refractive index together whose cross sections are right isosceles triangles such that three light valves are located adjacent to three exterior peripheral surfaces of dichroic prism to receive colored and modulated light beams therefrom and; a filter for absorbing light with a specified wavelength range, leaked from surface of dichroic prism at the opposite side of incident light surface and directed to liquid crystal light valve, the filter being located between liquid crystal light valves and surface of dichroic prism. As for construction of the dichroic prism itself, specifically, of the four aforementioned triangular prisms, the first triangular prism and the aforementioned third triangular prism are mutually affixed in a condition in which there is a first step difference in the vertical direction. The first exposed side is formed on one edge of the affixed side of the first triangular prism. Similarly, the second triangular prism and the fourth triangular prism are attached to each other such that there is a second step difference on the same edge, and a second exposed side is formed on one edge of the affixed surface of the second triangular prism. Further, the first and the third triangular prisms and the second and the fourth triangular prisms are attached, with a step difference between them, in such a way that the aforementioned first exposed side and the aforementioned second exposed side are located on the edges facing the same direction; and a third exposed surface that is orthogonal to the aforementioned first and second exposed surfaces is formed between the aforementioned first triangular prism and the aforementioned second triangular prism.
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公开(公告)号：US6000802A
公开(公告)日：1999-12-14
申请号：US163163
申请日：1998-09-30
IPC分类号： G02F1/13 , G02B27/10 , G02B27/28 , G02F1/09 , G02F1/1335 , G02F1/13357 , G02F1/1339 , G03B21/00 , G03B21/14 , H04N5/74 , H04N9/31
CPC分类号： G02B27/1026 , G02B27/1046 , G02B27/1073 , G02B27/145 , G02B27/149 , G02B27/283 , G02B27/285 , G02F1/13394 , H04N9/3105 , H04N9/317 , H04N5/7441
摘要： An output light from an light source lamp unit 8 in a projection-type display apparatus illuminates liquid-crystal light valves 925R, 925G and 925B for three colors via an integrator optical system 923. A superimposing lens 930 that is a component of the integrator optical system 923 as a uniform illumination optical system is arranged such that the mounting position of the superimposing lens 930 is fine-adjustable in a direction orthogonal to an optical axis 1a. By fine-adjusting the mounting position of the superimposing lens 930, the position of an illumination area B is adjusted such that the illumination area includes the image forming area A of the liquid-crystal light valve. It is not necessary to assure a wide margin around the image forming area A to cover the offset of the position of the illumination area B. As a result, the utilization of illumination light is heightened and a bright projected image results.
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