公开(公告)号：EP2309301A1

公开(公告)日：2011-04-13

申请号：EP10008617.2

申请日：2007-10-10

申请人： Hitachi, Ltd.

发明人： Hirata, Koji ,  Yatsu, Masahiko ,  Hisada, Takanori ,  Ohki, Masayuki

IPC分类号： G02B17/08 ,  G03B21/10 ,  H04N5/74

CPC分类号： G03B21/56 ,  G02B17/08 ,  G02B17/0852 ,  G03B21/10 ,  G03B21/14 ,  G03B21/28

摘要： A projection display system comprising a projection display unit including a light source, an image display element, a lighting optical system irradiating a beam of light on the image display element, and a projection optical system projecting an image light from the image display element toward a screen. The projection optical system including a lens group composed of a plurality of lens elements arranged in order toward the screen from the image display element and symmetrically with respect to an optical axis, and a reflecting mirror shaped to be axial-asymmetrical with respect to the optical axis. The projection display system further comprises a screen 5. The projection display unit projects the image light onto a projection plane of the screen to display an image.

公开(公告)号：EP2259120A1

公开(公告)日：2010-12-08

申请号：EP10008618.0

申请日：2007-10-10

申请人： Hitachi, Ltd.

发明人： Hirata, Koji ,  Yatsu, Masahiko ,  Hisada, Takanori ,  Ohki, Masayuki

IPC分类号： G02B17/08 ,  G03B21/10 ,  H04N5/74

CPC分类号： G03B21/56 ,  G02B17/08 ,  G02B17/0852 ,  G03B21/10 ,  G03B21/14 ,  G03B21/28

摘要： A projection display system comprising a projection display unit including a light source, an image display element, a lighting optical system irradiating a beam of light on the image display element, and a projection optical system projecting an image light from the image display element toward a screen. The projection optical system including a lens group composed of a plurality of lens elements arranged in order toward the screen from the image display element and symmetrically with respect to an optical axis, and a reflecting mirror shaped to be axial-asymmetrical with respect to the optical axis. The projection display system further comprises a screen 5. The projection display unit projects the image light onto a projection plane of the screen to display an image.

摘要翻译： 1。一种投影型显示系统，其特征在于，具备投影型显示部，该投影型显示部具有光源，图像显示元件，对该图像显示元件照射光束的照明光学系统，以及将来自该图像显示元件的图像光朝向 屏幕。 投影光学系统包括由多个透镜元件构成的透镜组，该多个透镜元件从图像显示元件朝向屏幕顺序排列并且相对于光轴对称;以及反射镜，其形状相对于光学元件轴对称 轴。 投影显示系统还包括屏幕5.投影显示单元将图像光投影到屏幕的投影平面上以显示图像。

公开(公告)号：EP2026571A3

公开(公告)日：2011-10-19

申请号：EP08252266.5

申请日：2008-07-03

申请人： Hitachi Ltd.

发明人： Hirata, Koji ,  Yatsu, Masahiko ,  Ikeda, Hidehiro

IPC分类号： H04N5/74 ,  H04N9/31 ,  G02F1/13357 ,  G02B21/10

CPC分类号： H04N5/7408 ,  G02B3/08 ,  G02B17/08 ,  G02B17/0852 ,  G02B27/1033 ,  G02B27/1053 ,  G02B27/285 ,  G02F1/133605 ,  G02F1/13362 ,  G03B21/10 ,  G03B21/28 ,  G03B21/60 ,  G03B33/12 ,  H04N5/7441 ,  H04N9/3114 ,  H04N2005/745

摘要： In a liquid crystal display apparatus, comprising a liquid crystal panel 170 and a rear projection device for projecting a light (i.e., a backlight) upon that liquid crystal panel from a rear surface side thereof, the rear projection device comprises a rear projection device (unit) 100, including therein a short-range oblique light projection optic system for projecting a light from a light source 101, obliquely and enlargedly, on a rear surface side of the liquid crystal panel 170; thereby providing a rear projection apparatus, etc., which can be applied in a direct-vision type thin image display apparatus, while disposing the liquid crystal panel separating from heat generation, so as to reduce the ill influences thereof.

公开(公告)号：EP2026571A2

公开(公告)日：2009-02-18

申请号：EP08252266.5

申请日：2008-07-03

申请人： Hitachi Ltd.

发明人： Hirata, Koji ,  Yatsu, Masahiko ,  Ikeda, Hidehiro

IPC分类号： H04N5/74

CPC分类号： H04N5/7408 ,  G02B3/08 ,  G02B17/08 ,  G02B17/0852 ,  G02B27/1033 ,  G02B27/1053 ,  G02B27/285 ,  G02F1/133605 ,  G02F1/13362 ,  G03B21/10 ,  G03B21/28 ,  G03B21/60 ,  G03B33/12 ,  H04N5/7441 ,  H04N9/3114 ,  H04N2005/745

摘要： In a liquid crystal display apparatus, comprising a liquid crystal panel 170 and a rear projection device for projecting a light (i.e., a backlight) upon that liquid crystal panel from a rear surface side thereof, the rear projection device comprises a rear projection device (unit) 100, including therein a short-range oblique light projection optic system for projecting a light from a light source 101, obliquely and enlargedly, on a rear surface side of the liquid crystal panel 170; thereby providing a rear projection apparatus, etc., which can be applied in a direct-vision type thin image display apparatus, while disposing the liquid crystal panel separating from heat generation, so as to reduce the ill influences thereof.

摘要翻译： 在液晶显示装置中，包括液晶面板170和用于从其后表面侧将光（即，背光）投射到该液晶面板上的后投影装置，该后投影装置包括后投影装置 单元）100，其中包括用于在液晶面板170的后表面侧上倾斜并且放大地投射来自光源101的光的短距离倾斜光投射光学系统; 从而提供可以应用于直视式薄型图像显示装置的背面投影装置等，同时配置分离发热的液晶面板，以减少其不良影响。

公开(公告)号：EP1752705A1

公开(公告)日：2007-02-14

申请号：EP06003413.9

申请日：2006-02-20

申请人： HITACHI, LTD.

发明人： Sasaki, Hiroshi ,  Nakamura, Kiyomi ,  Momose, Hideto ,  Nishimura, Sadayuki ,  Hirata, Koji ,  Adachi, Kei

IPC分类号： F21V7/22

CPC分类号： F21V7/22 ,  F21S41/37 ,  G02B1/105 ,  G02B1/14 ,  G02B1/18 ,  G02B5/0808 ,  G03B21/10 ,  G03B21/16 ,  G03B21/2026 ,  G03B21/2066 ,  H04N9/3105 ,  H04N9/315

摘要： It is an object to prevent deterioration of reflectance of a reflection layer (2; 43) composed of silver or a silver alloy, resulting from heat-caused migration of silver. The reflector (6; 13, 14; 16) for projection type display apparatuses which display image light beams emitted and reflected by a light source (8; 15; 45; 49), modulated for light intensity by a display device (21, 22, 23) and magnified by a projection lens (37), wherein the reflector (6; 13, 14; 16) is provided, on the reflection surface side, with a reflection layer (2; 43) composed at least of silver or a silver alloy, and a layer comprising inorganic particles and a binder composed of a silicon compound; and a light source (8; 15; 45; 49) and image display device (21, 22, 23) which use the reflector (6; 13, 14; 16).

摘要翻译： 本发明的目的是防止由于银的热引起的迁移而由银或银合金构成的反射层（2; 43）的反射率的劣化。 用于投影型显示装置的反射器（6; 13,14; 16），用于显示由显示装置（21,22）调制为光强度的光源（8; 15; 45; 49）发射和反射的图像光束 ，23），并且由投影透镜（37）放大，其中在所述反射面侧上设置反射体（6; 13,14; 16），所述反射层至少由银或 银合金，以及包含无机颗粒和由硅化合物组成的粘合剂的层; 以及使用所述反射器（6; 13,14; 16）的光源（8; 15; 45; 49）和图像显示装置（21,22,23）。

公开(公告)号：EP2284608A1

公开(公告)日：2011-02-16

申请号：EP10013410.5

申请日：2008-01-30

申请人： Hitachi, Ltd.

发明人： Hirata, Koji ,  Yatsu, Masahiko ,  Hisada, Takanori

IPC分类号： G03B21/28

CPC分类号： G03B21/28

摘要： In a projection type display apparatus for enabling to display an image, by projecting an image on an image display element(s), enlargedly, upon a nearly horizontal surface, such as, a table, a reflection mirror for reflecting a light from a light source is so disposed that an optical axis of the light source is nearly perpendicular to an optical axis of a lens group having a plural number of lens elements, which are disposed symmetric with respect to the optical axis.