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91. 发明授权

US06257726B1 Illuminating apparatus and projecting apparatus 失效
标题翻译：照明装置和投影装置
公开(公告)号：US06257726B1
公开(公告)日：2001-07-10
申请号：US09022274
申请日：1998-02-11
申请人： Atsushi Okuyama
发明人： Atsushi Okuyama
IPC分类号： B21
CPC分类号： G02B27/285 , G02B27/283 , H04N5/74 , H04N5/7441
摘要： An illuminating apparatus includes a condensing optical system for converting light from a light source into convergent light, and a first convex lens array for receiving the convergent light, and a collimating optical system for making a plurality of light beams from the first convex lens array parallel to one another. In addition, a polarization converting element array individually converts the plurality of light beams from the collimating optical system into polarized lights.
摘要翻译：照明装置包括用于将来自光源的光转换成会聚光的聚光系统和用于接收会聚光的第一凸透镜阵列和用于使来自第一凸透镜阵列的多个光束平行的准直光学系统彼此。此外，偏振转换元件阵列将来自准直光学系统的多个光束分别转换为偏振光。

92. 发明授权

US06212013B1 Projection type display apparatus 有权
标题翻译：投影式显示装置
公开(公告)号：US06212013B1
公开(公告)日：2001-04-03
申请号：US09382447
申请日：1999-08-25
申请人： Hiroyuki Kodama , Atsushi Okuyama
发明人： Hiroyuki Kodama , Atsushi Okuyama
IPC分类号： G02B2714
CPC分类号： G02B27/123 , G02B27/145 , G02B27/148 , G02B27/149 , H04N9/3105
摘要： A projection type display apparatus is arranged to be able to implement both brightness-priority display and color-reproduction-priority display by itself. In the display apparatus, white light from a light source 1 is separated into beams of three colors by a color separation optical system comprised of a combination of dichroic mirrors DM1, DM2, total reflection mirrors M1, M2, M3, etc., and the beams of the three colors are made incident to liquid-crystal display units 8R, 8G, 8B. After that, the beams are combined by a dichroic prism 9 and images of the liquid-crystal display units 8R, 8G, 8B are projected by a projection lens 10. In this display apparatus, a dichroic filter DF for transmitting light in a region not less than a certain wavelength (for example, about 600 nm) but intercepting light in the other region is arranged so as to be able to be put into or out of an optical path immediately before the liquid-crystal display unit 8R. When the dichroic filter DF is not put in the optical path, the light in the wavelength region not less than about 570 nm is used as projection light. When the dichroic filter DF is put in the optical path, the light in the region not less than about 600 nm is used as projection light in the red band.
摘要翻译：投影型显示装置被布置成能够自己实现亮度优先显示和色彩再现优先显示。在显示装置中，通过由分色镜DM1，DM2，全反射镜M1，M2，M3等的组合构成的分色光学系统将来自光源1的白光分离为三色光束，使三色光束入射到液晶显示单元8R，8G，8B。之后，通过分色棱镜9将光束组合在一起，液晶显示单元8R，8G，8B的图像被投影透镜10投影。在该显示装置中，用于在不显示区域中传输光的二向色滤光器DF 小于一定波长（例如约600nm），但是在另一区域中的遮挡光被配置为能够在紧接在液晶显示单元8R之前的光路中放出。当二向色滤光器DF不放入光路时，使用不小于约570nm的波长区域中的光作为投影光。当分色滤光器DF放入光路时，不小于约600nm的区域中的光被用作红色带中的投影光。

93. 发明授权

US6144493A Optical low-pass filter and optical apparatus having the same 失效
公开(公告)号：US6144493A
公开(公告)日：2000-11-07
申请号：US804155
申请日：1997-02-20
申请人： Atsushi Okuyama , Shuichi Kobayashi , Ken Wada
发明人： Atsushi Okuyama , Shuichi Kobayashi , Ken Wada
IPC分类号： G02B26/06 , G02B27/46 , G02B5/18
CPC分类号： G02B26/06 , G02B27/46
摘要： An optical low-pass filter comprises a phase advancing area which advances a phase of a wavefront of an incident pencil of rays with respect to a phase of a wavefront of a center of the incident pencil of rays, and a phase retarding area which retards the phase of the wavefront of the incident pencil of rays with respect to the phase of the wavefront of the center of the incident pencil of rays, the phase advancing area and the phase retarding area alternately existing in the optical low-pass filter, and an optical apparatus comprises an image forming optical system, an image pickup element, and such an optical low-pass filter.

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