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    Scattering type liquid crystal device
    2.
    发明授权
    Scattering type liquid crystal device 失效
    散射型液晶装置

    公开(公告)号：US5631750A

    公开(公告)日：1997-05-20

    申请号：US212284

    申请日：1994-03-14

    申请人： Nobuo Minoura ,  Hidetoshi Suzuki ,  Katsumi Kurematsu ,  Kazuo Yoshinaga ,  Hideaki Mitsutake

    发明人： Nobuo Minoura ,  Hidetoshi Suzuki ,  Katsumi Kurematsu ,  Kazuo Yoshinaga ,  Hideaki Mitsutake

    IPC分类号： G02B3/00 ,  G02F1/1335 ,  G02F1/137 ,  H04N5/74 ,  H04N9/31 ,  G02F1/1333

    CPC分类号： H04N9/315 ,  G02B3/0006 ,  G02B3/005 ,  G02B3/0056 ,  G02B3/0062 ,  G02B3/0068 ,  G02F1/133526 ,  H04N5/7441 ,  H04N9/3105 ,  G02F2001/13756

    摘要： A liquid crystal device for controlling scattering of light beams incident upon a liquid crystal layer so as to modulate the light beams includes: a first lens array having lenses corresponding to the liquid crystal layer, the lenses causing the light beams transmitted from the liquid crystal layer, the lenses causing the light beams transmitted from the liquid crystal layer to travel toward a focal plane; a mask for shielding scattered light transmitted from the first lens array as well as allowing non-scattered light to pass through, the mask having a plurality of aperture portions which are formed along the focal plane to correspond to the lenses of the first lens array so as to allow non-scattered light transmitted from corresponding lenses to pass through; and a second lens array having lenses arranged to correspond to the aperture portions of the mask, the lenses substantially collimating the non-scattered light transmitted from corresponding aperture portions of the mask.

    摘要翻译： 用于控制入射在液晶层上以调制光束的光束的散射的液晶装置包括：具有与液晶层相对应的透镜的第一透镜阵列，使得从液晶层透射的光束的透镜 使从液晶层透射的光束朝向焦平面移动的透镜; 用于屏蔽从第一透镜阵列透射的散射光以及允许非散射光通过的掩模，所述掩模具有沿焦平面形成的多个孔径部分，以对应于第一透镜阵列的透镜，因此 以允许从相应透镜透射的非散射光通过; 以及第二透镜阵列，其具有与所述掩模的开口部对应的透镜，所述透镜基本上准直由所述掩模的相应的孔部传输的非散射光。

    Projector provided with a plurality of image generators
    3.
    发明授权
    Projector provided with a plurality of image generators 失效
    具有多个图像发生器的投影仪

    公开(公告)号：US5333021A

    公开(公告)日：1994-07-26

    申请号：US811020

    申请日：1991-12-20

    申请人： Hideaki Mitsutake ,  Hidetoshi Suzuki ,  Katsumi Kurematsu ,  Kazuo Yoshinaga ,  Nobuo Minoura

    发明人： Hideaki Mitsutake ,  Hidetoshi Suzuki ,  Katsumi Kurematsu ,  Kazuo Yoshinaga ,  Nobuo Minoura

    IPC分类号： G02F1/1333 ,  G02F1/1335 ,  G03B33/12 ,  H04N9/31 ,  G03B21/00

    CPC分类号： H04N9/315

    摘要： A projector has means for supplying first and second radiation beams, first image generating means for modulating a plurality of portions of the first radiation beam individually and forming a deflected beam and a non-deflected beam to generate a first image, second image generating means for modulating a plurality of portions of the second radiation beam individually and forming a deflected beam and a non-deflected beam to generate a second image, and means for projecting the first and second images onto a predetermined plane by the use of one of the deflected beams and the non-deflected beams from the first and second image generating means, the first and second image generating means emitting the deflected beams so that most of the deflected beam from one of the generating means may substantially not enter the other generating means.

    摘要翻译： 投影仪具有用于提供第一和第二辐射束的装置，第一图像产生装置，用于单独调制第一辐射束的多个部分，并形成偏转光束和非偏转光束以产生第一图像;第二图像产生装置， 单独地调制第二辐射束的多个部分并形成偏转光束和非偏转光束以产生第二图像;以及用于通过使用偏转光束之一将第一和第二图像投影到预定平面上的装置 以及来自第一和第二图像产生装置的非偏转光束，第一和第二图像产生装置发射偏转的光束，使得来自发生装置之一的偏转光束的大部分基本上不能进入另一个发生装置。

    Display apparatus
    6.
    发明授权
    Display apparatus 失效
    显示装置

    公开(公告)号：US5208620A

    公开(公告)日：1993-05-04

    申请号：US718908

    申请日：1991-06-24

    申请人： Hideaki Mitsutake ,  Nobuo Minoura ,  Katsumi Kurematsu ,  Haruyuki Yanagi

    发明人： Hideaki Mitsutake ,  Nobuo Minoura ,  Katsumi Kurematsu ,  Haruyuki Yanagi

    IPC分类号： G03B21/10 ,  H04N5/74

    CPC分类号： H04N5/7408 ,  G03B21/10

    摘要： A display apparatus comprises a projecting device for projecting an image, with the projecting device having a projection optical system having a limited pupil diameter and screen device arranged at a position where an image is substantially projected by the projecting device. The screen device has at least two sheets in each of which a number of prisms extending like a straight line or a curve are formed on the surface on the side opposite to the projecting device. Each of the prisms has an effective portion for allowing a light flux from the projecting device to be emitted in a predetermined direction and a non-effective portion which does not contribute to the emission of the light flux in the predetermined direction, and wherein the non-effective portions of another one or a plurality of the other sheets among the plurality of sheets excluding the sheet arranged at the nearest position on the projecting device side are formed so as to have an almost intermediate angle between the angle of a principal ray when a light flux from the projecting device progresses in the sheets and the emission angle of the principal ray when it is emitted from effective surfaces of the prisms of the sheets.

    摘要翻译： 显示装置包括用于投影图像的投影装置，其中投影装置具有具有有限瞳孔直径的投影光学系统和布置在图像基本上由投影装置投影的位置处的屏幕装置。 屏幕装置具有至少两个片材，每个片材在与投影装置相对的一侧上的表面上形成有直线或曲线延伸的多个棱镜。 每个棱镜具有用于允许来自投影装置的光束沿预定方向发射的有效部分和对预定方向上的光束的发射无贡献的非有效部分，并且其中， 除了布置在突出装置侧的最靠近的位置的纸张之外的多个纸张中的另一个或多个其他纸张的有效部分被形成为具有当主要光线的角度之间几乎中间的角度 当从片材的棱镜的有效表面发射时，来自投影装置的光通量在片材中进行并且主光线的发射角度发生。

    Projector
    7.
    发明授权
    Projector 失效
    投影机

    公开(公告)号：US5153752A

    公开(公告)日：1992-10-06

    申请号：US658046

    申请日：1991-02-20

    申请人： Katsumi Kurematsu ,  Hideaki Mitsutake ,  Nobuo Minoura ,  Haruyuki Yanagi ,  Masaaki Kanashiki

    发明人： Katsumi Kurematsu ,  Hideaki Mitsutake ,  Nobuo Minoura ,  Haruyuki Yanagi ,  Masaaki Kanashiki

    IPC分类号： G02F1/13 ,  G02B27/28 ,  G02F1/1335 ,  G02F1/13357 ,  G03B33/12 ,  H04N5/74 ,  H04N9/31

    CPC分类号： H04N9/3167

    摘要： A liquid crystal type video projector is disclosed which has a reflection type optical modulator for effective use of beams from a radiation source such as a lamp or the like. The projector further comprises means for modulating the plane of polarization of a polarized beam entering the radiation source and for reflecting the polarized beam, thereby causing a reflection beam and an optical arrangement. The optical arrangement includes a first polarizing beam splitter for separating the beam from the radiation source into P and S polarized components and for directing the S polarized component to the modulator and a converter for rotating the plane of polarization of the P polarized component and converting into another S polarized component for enhanced efficiency of beam utilization. It further includes a second polarizing beam splitter for reflecting the other S polarized component and directing the other S polarized component and directing to the modulator. The polarizing beam splitters are caused to act as an analyzer for colored reflected beams via a dichroic mirror system.

    Screen and image display apparatus which minimizes the effects of re-reflected incident light
    8.
    发明授权
    Screen and image display apparatus which minimizes the effects of re-reflected incident light 失效
    屏幕和图像显示装置，其使再反射的入射光的影响最小化

    公开(公告)号：US5146365A

    公开(公告)日：1992-09-08

    申请号：US442722

    申请日：1989-11-29

    申请人： Nobuo Minoura ,  Haruyuki Yanagi ,  Hideaki Mitsutake ,  Katsumi Kurematsu

    发明人： Nobuo Minoura ,  Haruyuki Yanagi ,  Hideaki Mitsutake ,  Katsumi Kurematsu

    IPC分类号： G03B21/10 ,  G03B21/62 ,  H04N5/74

    CPC分类号： G03B21/28 ,  G03B21/10 ,  G03B21/625 ,  H04N5/7408

    摘要： A back projection type screen having a screen portion to be disposed at a position whereat an image projected from image projector means is formed, the screen portion being formed by at least one transparent sheet, the screen portion having a vertical direction and a horizontal direction in parallel to the surface of the transparent sheet, and a light diffusing portion formed on the light beam incidence side surface of the transparent sheet which is next to the light beam incidence side of the screen portion, the light diffusing portion transmitting an incident light therethrough and also diffusing reflected light in the vertical direction and the horizontal direction. The specification also discloses an image display apparatus using such screen.

    摘要翻译： 一种背投影式屏幕，其具有设置在从图像投影仪装置投影的图像的位置处的屏幕部分，所述屏幕部分由至少一个透明片形成，所述屏幕部分具有垂直方向和水平方向 平行于透明片的表面的光漫射部分和形成在屏幕部分的光束入射侧旁边的透明片的光束入射侧表面上的光漫射部分，光漫射部分透射入射光， 还在垂直方向和水平方向上扩散反射光。 本说明书还公开了使用这种屏幕的图像显示装置。

    Image display apparatus
    9.
    发明授权
    Image display apparatus 失效
    图像显示装置

    公开(公告)号：US5446510A

    公开(公告)日：1995-08-29

    申请号：US328406

    申请日：1994-10-24

    申请人： Hideaki Mitsutake ,  Nobuo Minoura ,  Kazumi Kimura ,  Katsumi Kurematsu

    发明人： Hideaki Mitsutake ,  Nobuo Minoura ,  Kazumi Kimura ,  Katsumi Kurematsu

    IPC分类号： G02B27/28 ,  G02F1/1335 ,  G02F1/13357 ,  H04N9/31 ,  G03B21/28

    CPC分类号： H04N9/3167 ,  G02B27/283 ,  H04N9/3105 ,  G02F1/133536 ,  G02F1/13362 ,  G02F2001/13355

    摘要： An image display apparatus has a radiation source, generator for generating an image by modulating a polarized light beam and directing device for directing a light beam from the radiation source toward the generator. The directing device has a conversion optical system for converting the beam from the radiation source into the polarized light beam. The conversion optical system has a polarizing beam splitter for splitting the beam from the radiation source into a first and second beams. In the conversion optical system, a 1/4 wavelength plate and a mirror are arranged so that the plane of polarization of the first beam is rotated to generate a third beam with the plane of polarization same as that of the second beam. The third beam is directed toward the generator through the polarizing beam splitter while the second beam is also directed toward the generator.

    摘要翻译： 图像显示装置具有辐射源，发生器，用于通过调制偏振光束并引导用于将来自辐射源的光束引向发生器来产生图像。 引导装置具有用于将来自辐射源的光束转换成偏振光束的转换光学系统。 转换光学系统具有偏振分束器，用于将来自辐射源的光束分成第一和第二光束。 在转换光学系统中，配置1/4波长板和反射镜，使得第一光束的偏振面旋转以产生具有与第二光束的偏振面相同的第三光束。 第三束通过偏振分束器指向发生器，而第二光束也被引向发生器。