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1. 发明授权

US6431710B2 Optical apparatus 有权
标题翻译：光学仪器
公开(公告)号：US6431710B2
公开(公告)日：2002-08-13
申请号：US91180601
申请日：2001-07-25
申请人： HITACHI LTD
发明人： FUSE KENJI , SHIRAISHI MIKIO , OTSUKA YASUO , KAKU NOBUYUKI , IKEDA HIDEHIRO
IPC分类号： G02F1/1333 , G09F9/00 , H04N9/31 , G03B21/18
CPC分类号： G03B21/16 , H04N9/3105 , H04N9/3144
摘要： An optical equipment having a discharge lamp for supplying light, and first, second and third light valves for projecting the light from the equipment, having an air intake opening arranged on one side of the equipment, a ventilation device associated with the air intake opening so as to draw in air from outside of the equipment through the air intake opening and a ventilation path arranged between an outlet of the ventilation device and the first, second and third light valves. The ventilation path includes a plurality of partition members which divide the ventilation path into first, second and third air flow paths so as to cool the first, second and third light valves respectively by air from the ventilation device.
摘要翻译：一种具有用于提供光的放电灯的光学设备，以及用于投射来自设备的光的第一和第三光阀，具有设置在设备一侧的进气口，与进气口相关联的通风装置，通过进气口从设备外部吸入空气，以及布置在通风装置的出口与第一，第二和第三光阀之间的通风路径。通气路径包括多个分隔构件，其将通气路径分成第一，第二和第三气流路径，以分别通过来自通气装置的空气来冷却第一，第二和第三光阀。

2. 发明专利

GB2420868B Rear projection type image display device with compact depth 未知
公开(公告)号：GB2420868B
公开(公告)日：2006-10-25
申请号：GB0523444
申请日：2004-08-18
申请人： HITACHI LTD
发明人： HIRATA KOJI , KATO SHUJI , IKEDA HIDEHIRO , YAMAMOTO MASAHIRO
IPC分类号： G02B13/16 , G03B21/10 , G02B13/18 , G03B21/00 , G03B21/14
摘要： The present invention relates to a rear projection type image display device comprising projection lenses ( 2, 3 ) for projecting an image displayed on an image display element onto a transmission type screen ( 6 ) on a larger scale, an optical path turn-back mirror ( 7 ) for turning back halfway a light beam projected from the projection lenses, and a drive circuit for displaying an image on the image display element, that are fixedly housed within a housing ( 5 ). When a diagonal size of the transmission type screen ( 6 ), the depth of the housing ( 5 ), and the length from a lower end of the screen ( 6 ) to a lower end of the housing ( 5 ), are assumed to be SS (inch), D (inch), and L (inch), respectively, the following conditions are satisfied: SS>40, D

3. 发明专利

GB2420868A Compact rear projection type image display device 未知
公开(公告)号：GB2420868A
公开(公告)日：2006-06-07
申请号：GB0523444
申请日：2004-08-18
申请人： HITACHI LTD
发明人： HIRATA KOJI , KATO SHUJI , IKEDA HIDEHIRO , YAMAMOTO MASAHIRO
IPC分类号： G02B13/16 , G03B21/14 , G02B13/18 , G02B27/18 , G03B21/00 , G03B21/10
摘要： The present invention relates to a compact rear projection type image display device comprising a projection optical unit 4, the projection optical unit including a white light source, a light beam splitting portion, an image display element, a light beam synthesizing portion and a projection lens, a drive circuit in a chassis 8 for driving the image display element, a turn-back mirror 7 for reflecting the light beam projected from the projection lens and directing the light beam to a screen 6, a housing 5 for housing therein the projection optical unit, the drive circuit and the turn-back mirror, wherein when looking at a central portion of the screen, the drive circuit is disposed on one of the right and left sides in the interior of the housing and the projection optical unit is disposed on the other.

4. 发明专利

GB2408590B Rear projection type image display device 未知
公开(公告)号：GB2408590B
公开(公告)日：2006-11-22
申请号：GB0418476
申请日：2004-08-18
申请人： HITACHI LTD
发明人： HIRATA KOJI , KATO SHUJI , IKEDA HIDEHIRO , YAMAMOTO MASAHIRO
IPC分类号： G02B13/16 , G03B21/10 , G02B13/18 , G02B27/18 , G03B21/00 , G03B21/14
摘要： The present invention relates to a rear projection type image display device comprising projection lenses ( 2, 3 ) for projecting an image displayed on an image display element onto a transmission type screen ( 6 ) on a larger scale, an optical path turn-back mirror ( 7 ) for turning back halfway a light beam projected from the projection lenses, and a drive circuit for displaying an image on the image display element, that are fixedly housed within a housing ( 5 ). When a diagonal size of the transmission type screen ( 6 ), the depth of the housing ( 5 ), and the length from a lower end of the screen ( 6 ) to a lower end of the housing ( 5 ), are assumed to be SS (inch), D (inch), and L (inch), respectively, the following conditions are satisfied: SS>40, D

5. 发明专利

GB2404995A Projector optical unit for rear projection image display appartus 未知
公开(公告)号：GB2404995A
公开(公告)日：2005-02-16
申请号：GB0412750
申请日：2004-06-08
申请人： HITACHI LTD
发明人： HIRATA KOJI , KATO SHUJI , YATSU MASAHIKO , NAKASHIMA TSUTOMU , IKEDA HIDEHIRO
IPC分类号： G02B13/18 , G02B13/16 , G02B13/24 , G02B21/00 , G02B27/18 , G03B21/00 , G03B21/10 , G03B21/20 , H04N9/31
摘要： In a projection type image display apparatus, a projector optical unit for projecting an image onto a screen (6) while magnifying a size of the image to be projected with respect to an original size of the image displayed by an image forming element (27), has a group of lenses (2, 3) for magnifying the size of the image with respect to the original size thereof, and an optical path extending from the image forming element (27) to the screen (6) to transmit the image along the optical path Preferably the screen is translucent and the image is projected obliquely onto its reverse side. Preferably the image forming element comprises liquid crystal panels and a cross-prism.

6. 发明专利

GB2404995B Projector optical unit projection type image display apparatus and rear projection type image display apparatus 未知
公开(公告)号：GB2404995B
公开(公告)日：2005-07-13
申请号：GB0412750
申请日：2004-06-08
申请人： HITACHI LTD
发明人： HIRATA KOJI , KATO SHUJI , YATSU MASAHIKO , NAKASHIMA TSUTOMU , IKEDA HIDEHIRO
IPC分类号： G02B13/18 , G02B13/16 , G02B13/24 , G02B21/00 , G02B27/18 , G03B21/00 , G03B21/10 , G03B21/20 , H04N9/31

7. 发明专利

GB2408590A Rear projection type image display device 未知
公开(公告)号：GB2408590A
公开(公告)日：2005-06-01
申请号：GB0418476
申请日：2004-08-18
申请人： HITACHI LTD
发明人： HIRATA KOJI , KATO SHUJI , IKEDA HIDEHIRO , YAMAMOTO MASAHIRO
IPC分类号： G02B13/16 , G02B13/18 , G03B21/00 , G03B21/10 , G03B21/14 , G02B27/18
摘要： The present invention relates to a rear projection type image display device comprising projection lenses 2, 3 for projecting an image displayed on an image display element onto a transmission type screen 6 on a larger scale, an optical path turn-back minor 7 for turning back halfway a light beam projected from the projection lenses, and a drive circuit for displaying an image on the image display element, that are fixedly housed within a housing 5. When a diagonal size of the transmission type screen 6, the depth of the housing 5, and the length from a lower end of the screen 6 to a lower end of the housing 5, are assumed to be SS, D, and L, respectively, the following conditions are satisfied: SS > 40 inch (101,6 cm), D & SS/3.0, and L & SS/10.9.

8. 发明专利

JP2008209811A Display device and projection type illuminating device 审中-公开
标题翻译：显示设备和投影类型照明设备
公开(公告)号：JP2008209811A
公开(公告)日：2008-09-11
申请号：JP2007048335
申请日：2007-02-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIRATA KOJI , TANITSU MASAHIKO , HISADA TAKAKI , IKEDA HIDEHIRO
IPC分类号： G03B21/00 , G02B3/08 , G02B13/18 , G02B17/08 , G02F1/13 , G02F1/1335
CPC分类号： G03B21/62 , G02F1/133526 , G02F1/133604 , G02F1/133605 , G02F1/133611 , G02F1/13362 , G02F1/13471 , G02F2001/133607 , G02F2001/133622 , G03B21/208 , G03B21/26 , G03B21/28 , H04N9/3155
摘要： PROBLEM TO BE SOLVED: To solve such a problem that the size of a light control section which performs light control of illumination light to be used for a direct-view liquid crystal display device becomes almost the same as that of an image display liquid crystal panel, so that the cost is increased.
SOLUTION: A light modulation section (150) comprising a liquid crystal panel which is smaller in size than the image display liquid crystal panel and modulates the intensity of incident light according to a video signal is used as the light control section for making the amount of light emitted from a light source (110) variable. A luminous flux controlled for each pixel, on the basis of the video signal, in the light modulation section is enlarged and projected on the image display liquid crystal panel (170) by a projection section (10). Thus, a display device capable of displaying a video image improved in contrast can be provided inexpensively.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题为了解决这样一个问题，即用于直视液晶显示装置的用于照明光的光控制的光控制部分的尺寸变得与图像显示器几乎相同液晶面板，使成本增加。解决方案：包括尺寸小于图像显示液晶面板的液晶面板并根据视频信号调制入射光的强度的光调制部分（150）被用作制造光控制部分从光源（110）发射的光的量是可变的。通过投影部（10）将基于视频信号的每个像素控制的光通量在光调制部中进行放大并投影在图像显示用液晶面板（170）上。因此，可以廉价地提供能够显示改善对比度的视频图像的显示装置。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2007025308A Projection type video display apparatus and color separation unit 审中-公开
标题翻译：投影类型视频显示设备和颜色分离单元
公开(公告)号：JP2007025308A
公开(公告)日：2007-02-01
申请号：JP2005207952
申请日：2005-07-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： IKEDA HIDEHIRO , TANITSU MASAHIKO , HIRATA KOJI , ADACHI HIROSHI
IPC分类号： G03B21/14 , G03B21/00
CPC分类号： G03B21/2073 , G03B21/208 , G03B33/12 , H04N9/3117
摘要： PROBLEM TO BE SOLVED: To provide a projection type video display apparatus in which color separation performance is improved.
SOLUTION: In the projection type video display apparatus, each color separation unit includes an incident plate having an aperture through which light from a light source is passed, and an integrator. It further includes a plurality of dichroic mirrors on the emission side of the integrator such that each color separation face is disposed almost parallel to the emission face of the integrator and only color light having a prescribed wavelength area is transmitted while color light having the other wavelength areas is reflected.
COPYRIGHT: (C)2007,JPO&INPIT

10. 发明专利

JP2005331530A Projection lens device and back projection type image display device using the same 审中-公开
标题翻译：投影镜头装置和背投影型图像显示装置
公开(公告)号：JP2005331530A
公开(公告)日：2005-12-02
申请号：JP2004147125
申请日：2004-05-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： INADATE YURIKO , KATO SHUJI , IKEDA HIDEHIRO , OGURA NAOYUKI , HIRATA KOJI
IPC分类号： G02B13/16 , G02B13/18 , G03B21/00 , G03B21/10 , G03B21/20 , G03B21/22
CPC分类号： G02B13/16 , G02B13/18 , G03B21/10 , G03B21/20
摘要： PROBLEM TO BE SOLVED: To improve productivity by properly keeping a distance between a power lens and an aspherical lens group arranged closest to the image generating source side of the power lens and thereby eliminating physical interference with the power lens, while contriving cost reduction, in a 6-group configuration projection lens device for enlarging and projecting an image on a projection CRT.
SOLUTION: As the aberration correcting lens (4th group lens 4) arranged on the video generating source side of the power lens (3rd group lens 3), a meniscus lens having negative refractive power with a concavity directed to a screen side is provided. Also, the lens face on the screen side of the meniscus lens is designed to have an aspherical shape in a manner that the curvature becomes greater from the optical axis to a prescribed point in the midway to the outer edge and smaller from the prescribed point to the outer edge. Further, as the base material of the 4th group lens situated closest to the video generating source side of a glass power lens, an inexpensive and highly fluid material having an Abbe constant (vd) ≥57 and a low refractive index (nd) ≤1.500 is used.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了通过适当地保持功率透镜和最靠近功率透镜的图像生成源侧布置的非球面透镜组之间的距离来提高生产率，从而消除与功率透镜的物理干扰，同时成本在用于在投影CRT上放大和投影图像的6组配置投影透镜装置中。＆lt; P＆gt;解决方案：作为配置在功率透镜（第3组透镜3）的视频发生源侧的像差校正透镜（第4组透镜4），具有朝向屏幕侧的凹面的负折射光焦度的弯月透镜为提供。此外，弯月透镜的屏幕侧的透镜面被设计成具有非球面形状，使得曲率从光轴变大到中间到外边缘的规定点，并且从规定点到更小外边缘。此外，作为最靠近玻璃功率透镜的视频发生源侧的第4组透镜的基材，具有阿贝常数（vd）≥57且低折射率（nd）≤1.500的便宜且高度流动的材料用来。版权所有（C）2006，JPO＆NCIPI

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