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    Projection type liquid crystal display device
    1.
    发明公开
    Projection type liquid crystal display device 失效
    Flüssigkristallanzeigegerätvom Projektionstyp

    公开(公告)号：EP0883302A3

    公开(公告)日：2000-09-27

    申请号：EP98109902.1

    申请日：1998-05-29

    申请人： Hitachi, Ltd.

    发明人： Kakuda, Takashi ,  Ouchi, Satoshi ,  Yatsu, Masahiko ,  Ozawa, Naohiro ,  Matsuda, Yutaka ,  Shiaki, Takuya

    IPC分类号： H04N9/31 ,  G02F1/1335 ,  G02B27/28

    CPC分类号： G02F1/13362 ,  G02B27/283 ,  H04N9/3105 ,  H04N9/3167

    摘要： A projection type liquid crystal display device, including: irradiation means having a function of irradiating light emitted from a light source upon an irradiated surface; a liquid crystal display element for modulating the light; and projection means for projecting the light emitted from said liquid crystal display element, wherein said irradiation means comprises: at least one reflection mirror; a polarization beam splitter for dividing the light from the light source into P polarization light and S polarization light; a λ/2 phase shifting plate for rotating a direction of polarization of either one of the P polarization and S polarization lights; polarization means being constructed with a reflection mirror for reflecting either one of the P polarization and S polarization lights; a first lens array being constructed with a plurality of condenser lenses, for collecting the light emitted from said polarization means so as to form a plurality of secondary light source images; and a second lens array being constructed with a plurality of condenser lenses and positioned in vicinity of where the plurality of secondary light source images are formed.

    摘要翻译： 一种投影型液晶显示装置，包括：照射装置，具有将从光源发射的光照射到照射面上的功能; 用于调制光的液晶显示元件; 以及用于投射从所述液晶显示元件发出的光的投影装置，其中所述照射装置包括：至少一个反射镜; 用于将来自光源的光分为P偏振光和S偏振光的偏振分束器; 用于旋转P偏振和S偏振光中的任一个的偏振方向的λ/ 2移相板; 偏振装置由反射镜构成，用于反射P偏振和S偏振光中的任一个; 第一透镜阵列，其由多个聚光透镜构成，用于收集从所述偏振装置发射的光，以便形成多个次级光源图像; 以及第二透镜阵列，其由多个聚光透镜构成，并且位于形成有多个次级光源图像的附近。

    Projection display system
    2.
    发明公开
    Projection display system 审中-公开
    投影显示系统

    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。

    Projection display system
    3.
    发明公开
    Projection display system 审中-公开
    投影显示系统

    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.

    Scanning type image display apparatus
    4.
    发明公开
    Scanning type image display apparatus 审中-公开
    Projektionsvorrichtung

    公开(公告)号：EP2000845A1

    公开(公告)日：2008-12-10

    申请号：EP08251957.0

    申请日：2008-06-05

    申请人： Hitachi, Ltd.

    发明人： Shikita, Kazuo ,  Yatsu, Masahiko

    IPC分类号： G02B26/08 ,  G02B26/10 ,  H04N5/74

    CPC分类号： G02B26/0833 ,  G02B26/101 ,  H04N9/3129

    摘要： In a scanning type image display apparatus, in which the shape of a reflecting surface of a mirror (1051) as a scanning unit (105) and the spot shape of a light beam (103) on the reflecting surface are adapted to each other to reduce the mirror size and increase the resonance frequency of the mirror, thereby enabling higher-resolution image display, the scanning type image display apparatus includes a laser light source (101) emitting a light beam (103); and a scanning unit (105) that pivots to scan the light beam in a first direction and a second direction substantially perpendicular to the first direction. A pivot width of the light beam in the first direction is larger than a pivot width of the light beam in the second width. A sectional shape of the light beam in the vicinity of the scanning unit is elliptical with a side (1041) in the first direction longer than a side (1042) in the second direction. The longer side is substantially parallel to the first direction of the scanning unit.

    摘要翻译： 在扫描型图像显示装置中，其中作为扫描单元（105）的反射镜（1051）的反射表面的形状和反射表面上的光束（103）的光斑形状彼此适配成 扫描型图像显示装置包括发射光束（103）的激光光源（101），该激光光源（101）发射光束（103）。 以及扫描单元（105），其以基本上垂直于第一方向的第一方向和第二方向枢转扫描光束。 光束在第一方向上的枢转宽度大于第二宽度中的光束的枢转宽度。 在扫描单元附近的光束的截面形状是椭圆形的，第一方向上的侧面（1041）比第二方向上的侧面（1042）长。 长边基本上平行于扫描单元的第一方向。

    Projection type display apparatus
    5.
    发明公开
    Projection type display apparatus 有权
    类似投影式显示装置

    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.

    Projection type liquid crystal display device
    9.
    发明公开
    Projection type liquid crystal display device 失效
    投影型的液晶显示装置

    公开(公告)号：EP0883302A2

    公开(公告)日：1998-12-09

    申请号：EP98109902.1

    申请日：1998-05-29

    申请人： Hitachi, Ltd.

    发明人： Kakuda, Takashi ,  Ouchi, Satoshi ,  Yatsu, Masahiko ,  Ozawa, Naohiro ,  Matsuda, Yutaka ,  Shiaki, Takuya

    IPC分类号： H04N9/31 ,  G02F1/1335 ,  G02B27/28

    CPC分类号： G02F1/13362 ,  G02B27/283 ,  H04N9/3105 ,  H04N9/3167

    摘要： A projection type liquid crystal display device, including: irradiation means having a function of irradiating light emitted from a light source upon an irradiated surface; a liquid crystal display element for modulating the light; and projection means for projecting the light emitted from said liquid crystal display element, wherein said irradiation means comprises: at least one reflection mirror; a polarization beam splitter for dividing the light from the light source into P polarization light and S polarization light; a λ/2 phase shifting plate for rotating a direction of polarization of either one of the P polarization and S polarization lights; polarization means being constructed with a reflection mirror for reflecting either one of the P polarization and S polarization lights; a first lens array being constructed with a plurality of condenser lenses, for collecting the light emitted from said polarization means so as to form a plurality of secondary light source images; and a second lens array being constructed with a plurality of condenser lenses and positioned in vicinity of where the plurality of secondary light source images are formed.