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21. 发明专利

JP2008300268A Image display device, and backlight unit used for it 审中-公开
标题翻译：图像显示设备和用于其的背光单元
公开(公告)号：JP2008300268A
公开(公告)日：2008-12-11
申请号：JP2007146646
申请日：2007-06-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAGAYOSHI MAYUMI , OUCHI SATOSHI , MURATA SEIJI , TSURU YASUTAKA
IPC分类号： F21V7/00 , F21S8/04 , G02F1/13357
摘要： PROBLEM TO BE SOLVED: To provide a thin, lightweight and high-luminance backlight unit high in luminance uniformity; and an image display device using it.
SOLUTION: This image display device is provided with: a backlight unit including a plurality of light sources 1 arranged in a planar form, a reflecting part 30 reflecting light from the light sources, and a diffusion part 5 diffusing the light from the light sources and the light reflected by the reflecting part; and a liquid crystal display part 10 to which light diffused by the diffusion part of the backlight unit is incident. The reflecting part is provided with first reflecting parts 3 each having a diffusive reflection function, and second reflecting parts 4 higher in directivity of reflected light than the first reflecting parts.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供高亮度均匀性的薄，轻，高亮度背光单元; 和使用它的图像显示装置。该图像显示装置设置有：背光单元，其包括以平面形式布置的多个光源1，反射部分30，其反射来自光源的光;以及扩散部5，其使来自光源和由反射部分反射的光; 以及由背光单元的扩散部分漫射的光入射到该液晶显示部10。反射部设置有各自具有漫反射功能的第一反射部3和反射光的指向性比第一反射部高的第二反射部4。版权所有（C）2009，JPO＆INPIT

22. 发明专利

JP2008299173A Video display device and backlight unit used for the same 审中-公开
标题翻译：视频显示设备和使用该显示设备的背光单元
公开(公告)号：JP2008299173A
公开(公告)日：2008-12-11
申请号：JP2007146644
申请日：2007-06-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAGAYOSHI MAYUMI , OUCHI SATOSHI , MURATA SEIJI , TSURU YASUTAKA
IPC分类号： G02F1/13357 , F21S2/00 , F21Y103/00
摘要： PROBLEM TO BE SOLVED: To provide a backlight unit that is thin and lightweight and ensures high luminance and high luminance uniformity, and to provide a video display device using the backlight unit.
SOLUTION: The video display device is equipped with a backlight unit including a plurality of light sources (1) arranged in a plane, a reflecting part (3, 4) for reflecting the light from the light sources and a diffusing part (5) for diffusing the light from the light source and the reflected light on the reflecting part. The reflecting part includes a diffusive reflecting part (4) that diffuses and reflects the light from the light sources. The height (a) from the upper face of the diffusive reflecting part to the lower face of the diffusing part, the pitch (b) of the plurality of light sources, and the diameter (c) of the light source satisfy a condition of 1/3≤a/(b-c)≤1/2.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种轻薄且能够确保高亮度和高亮度均匀性的背光单元，并提供使用背光单元的视频显示装置。解决方案：视频显示装置配备有包括布置在平面中的多个光源（1）的背光单元，用于反射来自光源的光的反射部（3,4）和扩散部（ 5），用于使来自光源的光和反射部分上的反射光扩散。反射部分包括漫射和反射来自光源的光的漫反射部分（4）。从扩散反射部的上表面到扩散部的下表面的高度（a），多个光源的间距（b）和光源的直径（c）满足条件1 /3≤a/（BC）≤1/ 2。版权所有（C）2009，JPO＆INPIT

23. 发明专利

JP2008299170A Video display device and backlight unit used for the same 有权
标题翻译：视频显示设备和使用该显示设备的背光单元
公开(公告)号：JP2008299170A
公开(公告)日：2008-12-11
申请号：JP2007146641
申请日：2007-06-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAGAYOSHI MAYUMI , OUCHI SATOSHI , MURATA SEIJI , TSURU YASUTAKA
IPC分类号： G02F1/13357 , F21S2/00 , F21V3/00 , F21Y101/02 , G02F1/1333
CPC分类号： G02F1/133608 , G02F1/133604 , G02F2001/133612
摘要： PROBLEM TO BE SOLVED: To provide a backlight unit that is thin and lightweight and ensures high luminance and high luminance uniformity, and to provide a video display device using the backlight unit.
SOLUTION: The video display device comprises: a backlight unit including a plurality of light sources (1) arranged in a plane, a reflecting part (3) for reflecting the light from the light sources, a diffusing part (4) for diffusing the light from the light source and the reflected light on the reflecting part, and a chassis (2) for holding or supporting the light sources, the reflecting part and the diffusing part; and a liquid crystal display unit (11) where the light diffused by the diffusing part of the backlight unit is made incident. The chassis has a plurality of slits or recesses (5), and placed at a predetermined distance from the light sources.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种轻薄且能够确保高亮度和高亮度均匀性的背光单元，并提供使用背光单元的视频显示装置。解决方案：视频显示装置包括：背光单元，包括布置在平面中的多个光源（1），用于反射来自光源的光的反射部分（3），用于扩散来自光源的光和反射部分上的反射光;以及用于保持或支撑光源的底盘（2），反射部分和扩散部分; 以及使由背光单元的扩散部漫射的光入射的液晶显示单元（11）。底盘具有多个狭缝或凹槽（5），并且放置在距离光源预定距离处。版权所有（C）2009，JPO＆INPIT

24. 发明专利

JP2008250024A Optical unit and image display device 有权
标题翻译：光学单元和图像显示设备
公开(公告)号：JP2008250024A
公开(公告)日：2008-10-16
申请号：JP2007091686
申请日：2007-03-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MURATA SEIJI , OUCHI SATOSHI , KOBORI TOMOO , IKEDA HIDEHIRO , HIRATA KOJI
IPC分类号： G02B27/18 , G02B26/00 , G02B27/28 , G02B27/48 , G03B21/00
摘要： PROBLEM TO BE SOLVED: To provide a high efficient optical unit which has the number of components reduced and reduces speckles, and an image display device including the optical unit.
SOLUTION: The optical unit comprises one or more coherent light sources 1 for emitting coherent light and a light transmission means for projecting emitted light obtained from the coherent light sources 1 onto an image display element 4. The light transmission means includes an optical path changing means 2, and the optical path changing means includes optical elements 2a and 2b having polarization dependence and a diffusing function and a driving means which moves or deforms the optical elements so as to reduce speckles.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有减少的元件数量并减少斑点的高效光学单元，以及包括该光学单元的图像显示装置。光学单元包括用于发射相干光的一个或多个相干光源1和用于将从相干光源1获得的发射光投射到图像显示元件4上的光传输装置。光传输装置包括光学路径改变装置2，并且光路改变装置包括具有偏振相关性和漫射功能的光学元件2a和2b以及使光学元件移动或变形以减少斑点的驱动装置。版权所有（C）2009，JPO＆INPIT

25. 发明专利

JP2008041256A Optical unit and video display device using the same 有权
标题翻译：光学单元和使用该光学单元的视频显示设备
公开(公告)号：JP2008041256A
公开(公告)日：2008-02-21
申请号：JP2006209595
申请日：2006-08-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MURATA SEIJI , OUCHI SATOSHI
IPC分类号： F21S2/00 , F21V13/00 , G02B27/18 , G02F1/13 , G03B21/14 , H04N5/74
摘要： PROBLEM TO BE SOLVED: To provide an optical unit and a video display device in which emitted light from a light source is efficiently made incident on a reflecting face mirror, and in which the brightness of the displayed video is improved.
SOLUTION: The optical unit is equipped with the light source 1 in which light is emitted to a range in a hemisphere, and the reflecting face mirror 2, in which the emitted light from the light source 1 is reflected and guided in a prescribed direction. A reflecting face shape of the reflecting face mirror 2 is constituted of a rotary oval face, a rotary paraboloid face or own part, and the light source 1 is arranged in the vicinity of a focus position F of the rotary oval face or the rotary paraboloid face of the reflecting face mirror 2. Then, the optical axis P of the emitting center direction of the light source 1 is made to be inclined by a prescribed angle θ with respect to the axis direction Q of the rotation of the rotary oval face or the rotary paraboloid face of the reflecting face mirror 2. Here, the inclination angle θ is preferably in a range of 30 to 50°.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种光学单元和视频显示装置，其中来自光源的发射光有效地入射到反射面镜上，并且其中显示的视频的亮度得到改善。解决方案：光学单元配备有光发射到半球的范围的光源1，并且反射面镜2，其中来自光源1的发射光被反射和引导在一个规定方向。反射面镜2的反射面形状由旋转椭圆面，旋转抛物面或自身构成，光源1配置在旋转椭圆面或旋转抛物面的焦点位置F附近然后，使光源1的发光中心方向的光轴P相对于旋转椭圆面的旋转的轴线方向Q倾斜规定的角度θ，或反射面镜2的旋转抛物面。这里，倾斜角θ优选在30°〜50°的范围内。版权所有（C）2008，JPO＆INPIT

26. 发明专利

JP2006235338A Projection type image display apparatus 审中-公开
标题翻译：投影类型图像显示设备
公开(公告)号：JP2006235338A
公开(公告)日：2006-09-07
申请号：JP2005051166
申请日：2005-02-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： IMAHASE TARO , OUCHI SATOSHI , MURATA SEIJI
IPC分类号： G03B21/14 , G03B21/00 , G03B21/16 , H01L33/58
摘要： PROBLEM TO BE SOLVED: To efficiently use emitted light even in the case of using a light source from which the light is emitted with a large dispersion angle, and then, to obtain a bright projection image. SOLUTION: The apparatus is provided with: a light source unit array 1RR constituted of a plurality of light source units 1R for emitting red (R) light; a light source unit array 1BB constituted of a plurality of light source units 1B for emitting blue (B) light; and a light source unit array 1GG constituted of a plurality of light source units 1B for emitting green (G) light. R, G and B light emitted from respective light source units 1R, 1B and 1G are converted to nearly parallel light beams by fan-shaped light pipes 2R, 2B and 2G arranged corresponding to the light source units 1R, 1B and 1G. The nearly parallel R, B and G light beams emitted from the light pipe arrays 2RR, 2BB and 2GG of the light pipes 2R, 2B and 2G are synthesized by a cross dichroic prism 4, then, transferred to an image display element (not illustrated) such as liquid crystal. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：即使在使用以大的分散角发射光的光源的情况下，也可有效地使用发射光，然后获得亮投影图像。解决方案：该装置设置有：由多个用于发射红（R）光的光源单元1R构成的光源单元阵列1RR; 由用于发射蓝色（B）光的多个光源单元1B构成的光源单元阵列1BB; 以及由发光绿（G）光的多个光源单元1B构成的光源单元阵列1GG。从相应的光源单元1R，1B和1G发射的R，G和B光通过对应于光源单元1R，1B和1G布置的扇形光管2R，2B和2G转换成几乎平行的光束。从光管2R，2B和2G的光管阵列2RR，2BB和2GG发射的近似平行的R，B和G光束由十字分色棱镜4合成，然后转移到图像显示元件（未示出））如液晶。版权所有（C）2006，JPO＆NCIPI

27. 发明专利

JP2006162635A Color separation element, optical unit using the same, and video display device 审中-公开
标题翻译：彩色分离单元，使用该单元的光学单元和视频显示设备
公开(公告)号：JP2006162635A
公开(公告)日：2006-06-22
申请号：JP2004349259
申请日：2004-12-02
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YOSHIDA HIRONORI , OUCHI SATOSHI , TANITSU MASAHIKO , ABE FUKUOKU , KAWASE JUNKO
IPC分类号： G03B21/14 , G02B26/00 , G02F1/13 , G02F1/13357
摘要： PROBLEM TO BE SOLVED: To realize higher luminance of an optical unit and a liquid crystal display device in an optical system of a single-plate scroll system.
SOLUTION: The color separation element is constituted to make the light from a light source incident on an aperture of a white light separation section, to make the light other than the separated color light incident on an aperture of a red light separation section, to make the light other than the separated color light incident on an aperture of a green light separation section, and to make the light other than the separated color light incident on an aperture of a blue light separation section. By such constitution, the simultaneous use of the white light, the red light, the green light and the blue light is made possible and the improvement in light utilization efficiency is made possible.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：在单板卷轴系统的光学系统中实现光学单元和液晶显示装置的更高亮度。解决方案：分色元件被构造成使来自入射到白光分离部分的孔的光源的光使除了分离的色光之外的光入射到红光分离部分的孔上使除入射在绿色光分离部的孔径上的分离色光以外的光，并使得入射到蓝色光分离部的孔径上的分离色光以外的光。通过这样的结构，可以同时使用白光，红光，绿光和蓝光，并且可以提高光利用效率。版权所有（C）2006，JPO＆NCIPI

28. 发明专利

JP2006145621A Optical unit and projection type image display apparatus employing same 审中-公开
标题翻译：光学单元和投影类型图像显示设备使用它们
公开(公告)号：JP2006145621A
公开(公告)日：2006-06-08
申请号：JP2004332043
申请日：2004-11-16
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TANITSU MASAHIKO , OUCHI SATOSHI , ABE FUKUOKU , HIRATA KOJI , YOSHIDA HIRONORI , KAWASE JUNKO
IPC分类号： G03B21/00 , G02B27/18
摘要： PROBLEM TO BE SOLVED: To provide technology for securing a bright image of high image quality, for a projection type image display apparatus.
SOLUTION: A first both-way optical path is formed by a first both-way optical path forming means such as a PBS between the means and a rotating polyhedron, and also, a second both-way optical path is formed by a second both-way optical path forming means between the means and an image display element, and on the first both-way optical path, color light separated after being emitted from a light source side is guided to the rotating polyhedron, and also, the light reflected by the rotating polyhedron is guided toward the first both-way optical path forming means, and also, on the second both-way optical path, the color light from the first both-way optical path forming means is guided toward the image display element, and also, the color light modulated by the image display element is guided toward the second both-way optical path forming means, and the color light is color-synthesized by the second both-way optical path forming means, and then, projected toward the projection lens unit.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供用于确保高图像质量的明亮图像的技术，用于投影型图像显示装置。解决方案：第一双向光路由装置和旋转多面体之间的诸如PBS之类的第一双向光路形成装置形成，并且第二双向光路由在装置和图像显示元件之间的第二双向光路形成装置，并且在第一双向光路上，在从光源侧发射之后分离的彩色光被引导到旋转多面体，并且光被旋转的多面体反射的光被引导到第一双向光路形成装置，并且在第二双向光路上，来自第一双向光路形成装置的彩色光被引向图像显示元件，并且由图像显示元件调制的色光被引向第二双向光路形成装置，并且通过第二双向光路形成装置对彩色光进行彩色合成，然后向投影镜头u 尼特。版权所有（C）2006，JPO＆NCIPI

29. 发明专利

JP2005043854A Projection image display apparatus 审中-公开
标题翻译：投影图像显示设备
公开(公告)号：JP2005043854A
公开(公告)日：2005-02-17
申请号：JP2003380624
申请日：2003-11-11
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： IMAHASE TARO , OUCHI SATOSHI , MIYOSHI TOMOHIRO
IPC分类号： G02F1/13 , G02F1/133 , G03B21/00 , G03B21/14 , G09G3/20 , G09G3/34 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To provide a projection image display apparatus realizing improvement in brightness. SOLUTION: The brightness of the projection image display apparatus is improved by variably controlling the time ratios when light in a plurality of wavelength regions including white light is separated by using an optical characteristics switching element which separates one kind of wavelength region in light in a plurality of wavelength ranges including white light from the light from a light source unit in different periods on the time base. COPYRIGHT: (C)2005,JPO&NCIPI

30. 发明专利

JP2004126496A Optical unit and projection type video display device using optical unit 审中-公开
公开(公告)号：JP2004126496A
公开(公告)日：2004-04-22
申请号：JP2002369172
申请日：2002-12-20
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKAJIMA TSUTOMU , OUCHI SATOSHI , IMAHASE TARO , MIYOSHI TOMOHIRO
IPC分类号： G02F1/13 , G02B21/00 , G02B27/28 , G02F1/13357 , G03B21/00 , G03B21/16 , H04N5/74 , H04N9/31
CPC分类号： G03B21/16 , G03B21/208 , G03B33/12
摘要： PROBLEM TO BE SOLVED: To realize an inexpensive optical unit prepared for a reflection type liquid crystal projector, having compact, lightweight and bright characteristics and capable of preventing contrast from being reduced due to leaked light in a black image and to provide an inexpensive reflection type liquid crystal projector having compact, lightweight and bright characteristics and capable of preventing contrast from being reduced due to leaked light in a black image. SOLUTION: A reflection type polarizing plate acting as a polarizing plate having grating action only in the same specific direction as a polarizer and an analyzer to a reflection type liquid crystal panel and an auxiliary polarizer and an absorption type auxiliary analyzer are used so that the reflection axis of the polarizer or the absorption axis of the analyzer are used in a direction in which leaked light in a black image is reduced in accordance with the characteristics of the reflection type liquid crystal panel. COPYRIGHT: (C)2004,JPO

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