公开(公告)号：US5513037A

公开(公告)日：1996-04-30

申请号：US336528

申请日：1994-11-09

申请人： Takahiko Yoshida ,  Koji Hirata ,  Hiroki Yoshikawa ,  Masayuki Muranaka ,  Isao Yoshizaki ,  Atsuo Osawa

发明人： Takahiko Yoshida ,  Koji Hirata ,  Hiroki Yoshikawa ,  Masayuki Muranaka ,  Isao Yoshizaki ,  Atsuo Osawa

IPC分类号： G03B21/62 ,  G03B21/60

CPC分类号： G03B21/625

摘要： A rear-projection screen for a rear-projection image display comprises a Fresnel lens sheet (2) and a lenticular lens sheet (3), or a Fresnel lens sheet (2), a lenticular lens sheet (3) and a light absorbing sheet (4). The entrance surface (21) of the Fresnel lens sheet (2) or the entrance surface (41) of the light absorbing sheet (4) is formed by contiguously and vertically arranging a plurality of horizontally elongate lenticular lenses. The thickness of the Fresnel lens sheet (2) is approximately equal to that of the lenticular lens sheet (3). The entrance surface (31) and the exit surface (32) of the lenticular lens sheet (3) are formed by contiguously and horizontally arranging a plurality of vertically elongate lenticular lenses. Particles of a light diffusing material, which is essential to the prior art rear-projection screen, are not necessarily dispersed in the base sheet (30) of the lenticular lens sheet (3). The rear-projection image display provided with this rear-projection screen has satisfactory focusing characteristics and enhanced vertical directional characteristics and is capable of displaying an image in high brightness and high contrast.

摘要翻译： 背投影像显示器的背投屏幕包括菲涅尔透镜片（2）和双凸透镜片（3），或菲涅耳透镜片（2），双凸透镜片（3）和光吸收片 （4）。 菲涅耳透镜片（2）的入射表面（21）或光吸收片（4）的入射表面（41）通过连续且垂直地布置多个水平细长的双凸透镜而形成。 菲涅尔透镜片（2）的厚度大致等于双凸透镜片（3）的厚度。 双凸透镜片（3）的入射表面（31）和出射表面（32）通过连续且水平地布置多个垂直细长的双凸透镜而形成。 对于现有技术的背投屏幕来说，光漫射材料的颗粒不一定分散在双凸透镜片（3）的基片（30）中。 设置有该背投屏幕的背投影像显示器具有令人满意的聚焦特性和增强的垂直方向特性，并且能够以高亮度和高对比度显示图像。

公开(公告)号：US5103302A

公开(公告)日：1992-04-07

申请号：US466927

申请日：1990-01-18

申请人： Takahiko Yoshida ,  Hiroki Yoshikawa ,  Shigeru Mori ,  Koji Hirata ,  Tooru Numata ,  Isao Yoshizaki ,  Mitsuo Okimoto

发明人： Takahiko Yoshida ,  Hiroki Yoshikawa ,  Shigeru Mori ,  Koji Hirata ,  Tooru Numata ,  Isao Yoshizaki ,  Mitsuo Okimoto

IPC分类号： H04N9/31

CPC分类号： H04N9/31

摘要： A projection type image display device provided with three projecting lenses projecting light emitted by cathode-ray tubes of different colors, red, green and blue, on a screen while enlarging an image is disclosed, in which clapper plates are disposed preferably in front of the red and the blue image source and the clapper plates have different shapes so as to obtain an image without the fluctuation in the color on the whole surface of the screen, even in the case where the distance from the cathode-ray tubes to the screen is shortened in order to reduce the size of the display device.

摘要翻译： 公开了一种投影型图像显示装置，其具有三个投影透镜，用于在放大图像的同时在屏幕上投射由红色，绿色和蓝色不同颜色的阴极射线管发射的光，其中拍板最好设置在 红色和蓝色图像源和拍板具有不同的形状，以便在屏幕的整个表面上获得没有颜色波动的图像，即使在从阴极射线管到屏幕的距离为 缩短以减小显示装置的尺寸。

公开(公告)号：US5066099A

公开(公告)日：1991-11-19

申请号：US513854

申请日：1990-04-24

申请人： Takahoko Yoshida ,  Masayuki Muranaka ,  Hiroki Yoshikawa ,  Koji Hirata ,  Isao Yoshizaki ,  Masakuni Teratani ,  Nobuhiro Konuma

发明人： Takahoko Yoshida ,  Masayuki Muranaka ,  Hiroki Yoshikawa ,  Koji Hirata ,  Isao Yoshizaki ,  Masakuni Teratani ,  Nobuhiro Konuma

IPC分类号： G02B3/00 ,  G02B3/06 ,  G02B5/02 ,  G03B21/62 ,  G03B21/625 ,  G09F9/00 ,  H04N5/74 ,  H04N9/31

CPC分类号： G03B21/625

摘要： A rear projection screen for use in a rear projection image display device comprises one or more sheet members through which light is sequentially transmitted from the side of a plane of incidence of the screen, the last sheet member comprising a transparent material as a base thereof, and a light diffusing layer provided on the side of a plane of emergence of the base. A light diffuser having a refractive index different from that of the base may be dispersed in the base so as to contrive a greater viewing angle. Further, a transperent binder for supporting the light diffuser dispersed in the light diffusing layer or the light diffuser itself may be colored in order to obtain a further enhanced contrast.

摘要翻译： 用于后投影图像显示装置的背投屏幕包括一个或多个片状构件，光从屏幕的入射面的一侧依次传输，最后的片构件包括作为其基底的透明材料， 以及设置在基底的出射面的一侧的光漫射层。 具有与基底不同的折射率的光漫射体可以分散在基底中以便产生更大的视角。 此外，为了获得进一步增强的对比度，可以着色用于支撑分散在光漫射层或光扩散器本身中的光漫射体的透射粘合剂。

公开(公告)号：US09933553B2

公开(公告)日：2018-04-03

申请号：US14403684

申请日：2012-06-21

申请人： Koji Hirata ,  Hiroyuki Minemura ,  Yumiko Anzai ,  Tetsuya Nishida ,  Jiro Yamamoto ,  Naoyuki Kofuji ,  Hidehiro Ikeda ,  Nobuyuki Kimura

发明人： Koji Hirata ,  Hiroyuki Minemura ,  Yumiko Anzai ,  Tetsuya Nishida ,  Jiro Yamamoto ,  Naoyuki Kofuji ,  Hidehiro Ikeda ,  Nobuyuki Kimura

IPC分类号： G02F1/1335 ,  G02B5/30 ,  G03B21/20 ,  G03B21/00

CPC分类号： G02B5/3058 ,  G02F1/133536 ,  G02F2001/133548 ,  G03B21/006 ,  G03B21/2073

摘要： Provided are an optical element and an optical device using the optical element to which a manufacturing process for manufacturing a wire-grid structure can be basically applied, and besides, in which a higher polarization contrast ratio than that of a wire-grid element can be obtained. A wobbled wire element in an embodiment has a feature that a periodic structure having a period equal to or larger than a wavelength of an incident light wave is formed in a y direction. In this manner, in a wobbled wire element in a first embodiment, a polarization contrast ratio can be significantly improved.

公开(公告)号：US09217915B2

公开(公告)日：2015-12-22

申请号：US13818052

申请日：2010-09-30

申请人： Koji Hirata ,  Toshihiko Matsuzawa ,  Tadashi Sato

发明人： Koji Hirata ,  Toshihiko Matsuzawa ,  Tadashi Sato

IPC分类号： G03B21/28 ,  G03B21/30 ,  H04N1/00 ,  H04N1/10 ,  G02B27/28 ,  G03B21/10 ,  G03B21/62 ,  H04N9/31 ,  G02B3/08

CPC分类号： G03B21/28 ,  G02B3/08 ,  G02B27/283 ,  G03B21/10 ,  G03B21/30 ,  G03B21/62 ,  H04N1/00559 ,  H04N1/00562 ,  H04N1/1065 ,  H04N9/3173

摘要： A projection-type video display apparatus comprising: a transmission-type screen; a video projection unit configured to project an image displayed on a video display surface as an image light; a projection optic system configured to enlarge and project the image light projected from said video projection unit on a rear surface of said transmission-type screen; and a plane mirror, provided in a part of said projection optic system, configured to reflect the image light from said video projection unit, thereby to project it on said transmission-type screen, wherein said transmission-type screen, said video projection unit and said projection optic system are mounted on a base; said video projection unit builds up an oblique projection optic system; and said transmission-type screen and said plane mirror are disposed on said base, being perpendicularly fixed, independently, in parallel with each other, and on the rear surface of said transmission-type screen is attached a foldable back cover, detachably, so as to cover a rear surface of said plane mirror.

摘要翻译： 一种投影型视频显示装置，包括：传输型屏幕; 视频投影单元，被配置为将显示在视频显示面上的图像投影为图像光; 投影光学系统，被配置为在所述透射型屏幕的后表面上放大投影从所述视频投影单元投射的图像光; 以及设置在所述投影光学系统的一部分中的平面镜，被配置为反射来自所述视频投影单元的图像光，从而将其投影在所述透射型屏幕上，其中所述透射型屏幕，所述视频投影单元和 所述投影光学系统安装在基座上; 所述视频投影单元建立倾斜投影光学系统; 并且所述透射型屏幕和所述平面镜设置在所述基座上，彼此独立地垂直固定，并且在所述透射型屏幕的后表面上安装有可折叠的后盖，以可拆卸的方式安装 以覆盖所述平面镜的后表面。

公开(公告)号：US09116349B2

公开(公告)日：2015-08-25

申请号：US14127982

申请日：2011-06-22

申请人： Koji Hirata ,  Masahiko Yatsu

发明人： Koji Hirata ,  Masahiko Yatsu

IPC分类号： G02B26/08 ,  G02B26/10 ,  G02B26/12 ,  G02B17/08 ,  G02B21/00

CPC分类号： G02B26/101 ,  G02B17/08 ,  G02B17/0852 ,  G02B21/0096 ,  G02B26/0833

摘要： An image display device having a scanning characteristic excellent in the linearity without being upsized is provided. The image display device includes: an optical scanning unit that scans a light emitted from a light source in a first direction and a second direction of an image plane due to a rotational movement of reciprocation of a reflecting surface of the light; and an optical system enlarges a scanning angle of the scanned light, in which the optical system has a free curved surface lens on an optical scanning unit side, and has a free curved surface mirror on an image plane side. The free curved surface mirror may be arranged so that the first direction is substantially parallel to a first plane defined by an incident optical beam and a reflected light in the free curved surface mirror when the optical scanning unit remains static in the center of the scanning range.

摘要翻译： 提供一种图像显示装置，其具有在不增大尺寸的情况下具有优异线性的扫描特性。 图像显示装置包括：光学扫描单元，其由于光的反射面的往复运动而沿第一方向和图像平面的第二方向扫描从光源发射的光; 并且光学系统放大扫描光的扫描角度，其中光学系统在光学扫描单元侧具有自由曲面透镜，并且在像面侧具有自由曲面镜。 自由曲面反射镜可以布置成使得当光学扫描单元在扫描范围的中心保持静止时，第一方向基本上平行于由入射光束限定的第一平面和自由曲面反射镜中的反射光 。

公开(公告)号：US08733953B2

公开(公告)日：2014-05-27

申请号：US13021101

申请日：2011-02-04

申请人： Koji Hirata ,  Masahiko Yatsu ,  Takanori Hisada ,  Hidehiro Ikeda

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

IPC分类号： G03B21/20

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： A display apparatus includes a light source which is configured to emit a light, a first light modulation unit which is configured modulate the light emitted from said light source, a first drive unit which is configured to drive said first light modulation unit, a projection unit, which is configured to project the light from said first light modulation unit enlargedly, a second light modulation unit, which is configured to modulate the light emitted from said projection unit so as to be emitted to an observer side, a second drive unit which is configured to drive said second light modulation unit, and an optical direction conversion unit, which is configured to convert the light from said projection unit so that the light is incident upon an incident surface of said second light modulation unit in a direction approximately perpendicular thereto.

摘要翻译： 一种显示装置，包括被配置为发光的光源，被配置为调制从所述光源发射的光的第一光调制单元，被配置为驱动所述第一光调制单元的第一驱动单元，投影单元 其被配置为从所述第一调光单元放大的光投射第二光调制单元，其被配置为调制从所述投影单元发射的光以被发射到观察者侧;第二驱动单元，其是 被配置为驱动所述第二光调制单元，以及光学方向转换单元，其被配置为转换来自所述投影单元的光，使得光在与所述第二光调制单元的大致垂直的方向上入射到所述第二调光单元的入射表面。

公开(公告)号：US20140126033A1

公开(公告)日：2014-05-08

申请号：US14127982

申请日：2011-06-22

申请人： Koji Hirata ,  Masahiko Yatsu

发明人： Koji Hirata ,  Masahiko Yatsu

IPC分类号： G02B26/10 ,  G02B26/08

CPC分类号： G02B26/101 ,  G02B17/08 ,  G02B17/0852 ,  G02B21/0096 ,  G02B26/0833

摘要： An image display device having a scanning characteristic excellent in the linearity without being upsized is provided. The image display device includes: an optical scanning unit that scans a light emitted from a light source in a first direction and a second direction of an image plane due to a rotational movement of reciprocation of a reflecting surface of the light; and an optical system enlarges a scanning angle of the scanned light, in which the optical system has a free curved surface lens on an optical scanning unit side, and has a free curved surface mirror on an image plane side. The free curved surface mirror may be arranged so that the first direction is substantially parallel to a first plane defined by an incident optical beam and a reflected light in the free curved surface mirror when the optical scanning unit remains static in the center of the scanning range.

摘要翻译： 提供一种图像显示装置，其具有在不增大尺寸的情况下具有优异线性的扫描特性。 图像显示装置包括：光学扫描单元，其由于光的反射表面的往复运动而沿第一方向和图像平面的第二方向扫描从光源发射的光; 并且光学系统放大扫描光的扫描角度，其中光学系统在光学扫描单元侧具有自由曲面透镜，并且在像面侧具有自由曲面镜。 自由曲面反射镜可以布置成使得当光学扫描单元在扫描范围的中心保持静止时，第一方向基本上平行于由入射光束限定的第一平面和自由曲面反射镜中的反射光 。

公开(公告)号：US08690345B2

公开(公告)日：2014-04-08

申请号：US13251431

申请日：2011-10-03

申请人： Koji Hirata ,  Masahiko Yatsu ,  Naoyuki Ogura ,  Hidehiro Ikeda

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

IPC分类号： G03B21/14

CPC分类号： G02B13/18 ,  G02B7/022 ,  G02B13/16

摘要： There is provided a projection image display apparatus which is excellent in quality of a display screen image even if a projection lens using a plastic lens having an asymmetrical shape with respect to an optical axis is used. The apparatus includes a projection lens which obliquely projects video light on a screen, an integrator which aligns a polarization direction of light from a light source, and an image display element (P, PL) which modulates light having the aligned polarization direction by an image signal. The projection lens includes multiple plastic lenses, and each of the multiple plastic lenses is arrayed, respectively, by shifting a gate direction to each other by 180 degrees. When the projection lens includes n sheets (n is a natural number) of plastic lenses, each of the multiple plastic lenses may be arrayed, respectively, by shifting a gate direction to each other by (360/n) degrees.

摘要翻译： 提供了即使使用具有相对于光轴具有不对称形状的塑料透镜的投影透镜，显示屏图像的质量也优异的投影图像显示装置。 该装置包括将视频光倾斜地投影在屏幕上的投影透镜，使来自光源的光的偏振方向对准的积分器和通过图像调制具有排列的偏振方向的光的图像显示元件（P，PL） 信号。 投影透镜包括多个塑料透镜，并且通过将栅极方向彼此移动180度来分别排列多个塑料透镜中的每一个。 当投影透镜包括n个塑料透镜的n个片（n个是自然数）时，通过将栅极方向彼此移动（360 / n）度，可以分别排列多个塑料透镜中的每一个。

公开(公告)号：US08662678B2

公开(公告)日：2014-03-04

申请号：US12909588

申请日：2010-10-21

申请人： Koji Hirata ,  Hidehiro Ikeda ,  Nobuyuki Kimura

发明人： Koji Hirata ,  Hidehiro Ikeda ,  Nobuyuki Kimura

IPC分类号： G03B21/26

CPC分类号： G03B21/142 ,  G03B21/20 ,  G03B21/204 ,  G03B21/2066 ,  G03B21/208

摘要： A solid-state light source device, enabling to build up with using solid-state elements, and having the structure suitable to be applied as a light source for a projection-type display apparatus, comprises a solid-state light source unit 10 for emitting excitation light therefrom, a reflection mirror (or reflector) 130 made of a parabolic surface, for condensing the excitation light from the solid-state light source to be point-like, and a disc-like (or wheel) member 140, repeating reflection/scattering or transmission/scattering of the excitation light and conversion of the excitation light, alternately, in vicinity of a focus point of the excitation light, which is condensed to be point-like by the reflection mirror (or reflector), wherein the excitation light (B-color) reflected/or scattered by that disc-like (or wheel) member and fluorescence light (Y-color), wavelength of which is converted, is taken on a same optical path, by means of the reflection mirror (or reflector) 130 or a second reflection mirror (or reflector) 130′, and thereby outputting a white color light emitting from a point-like light source.

摘要翻译： 固体光源装置，其能够使用固态元件构成，并且具有适合作为投影型显示装置的光源的结构的固体光源装置，包括：发光用固体光源装置10 激发光，由抛物线表面制成的用于将来自固态光源的激发光聚焦成点状的反射镜（或反射体）130以及盘状（或轮）部件140，反复反射 /激发光的散射或透射/散射，以及激发光的转换，交替地在被反射镜（或反射体）聚光成点状的激发光的焦点附近，其中激发 通过该盘状（或轮）构件反射/或散射的光（B色）和其波长被转换的荧光（Y-颜色）通过反射镜（在 或反射器）130或a 第二反射镜（或反射镜）130'，从而输出从点状光源发射的白色光。