公开(公告)号：US06894729B2

公开(公告)日：2005-05-17

申请号：US10448218

申请日：2003-05-30

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

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

IPC分类号： G02B5/26 ,  G02B5/30 ,  G02B13/16 ,  G02B13/18 ,  G02B13/22 ,  G02F1/13 ,  G02F1/1335 ,  G03B21/00 ,  G03B21/10 ,  G03B33/12 ,  H04N5/74 ,  H04N9/31 ,  G02F1/00

CPC分类号： H04N9/3141 ,  G02B13/16 ,  G03B21/10 ,  H04N5/7441 ,  H04N9/3108 ,  H04N9/3144 ,  H04N9/317

摘要： An optical projection apparatus includes an optical lighting system provided with a polarized beam splitter for polarizing white light flux from a white light source and combining the white light flux with other light fluxes, thereby taking out a predetermined polarized wave; a multi-lens array consisting of a plurality of lens elements; and an irradiator for separating the white light flux into three primary color light fluxes of red, green, and blue and irradiating each of the three color light fluxes on the same display element at an angle different from the others; and a projecting lens unit used for projecting the three primary color light fluxes modulated by the display element. Color light fluxes modulated by the display element are separated in a horizontal direction of the screen of the display element when passing an injection pupil of the projection lens unit.

摘要翻译： 一种光学投影装置，具备：光学照明系统，具备使来自白色光源的白色光束偏振的偏光分束器，并将白色光束与其他光束组合，从而取出预定的极化波; 由多个透镜元件组成的多透镜阵列; 以及用于将白光束分离为红色，绿色和蓝色的三原色光束的照射器，并且以与其它不同的角度在同一显示元件上照射三种颜色光束中的每一种; 以及用于投影由显示元件调制的三原色光束的投影透镜单元。 当通过投影透镜单元的注入光瞳时，由显示元件调制的彩色光束在显示元件的屏幕的水平方向上被分离。

公开(公告)号：US06573950B1

公开(公告)日：2003-06-03

申请号：US09484525

申请日：2000-01-18

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

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

IPC分类号： H04N931

CPC分类号： H04N9/3141 ,  G02B13/16 ,  G03B21/10 ,  H04N5/7441 ,  H04N9/3108 ,  H04N9/3144 ,  H04N9/317

摘要： A single-panel liquid crystal rear side projection type image display apparatus, which is compact in size and can satisfy requirements of both brightness and color purity and can focus images very sharply with the contrast property improved significantly and with less screen distortion, and a projection lens unit comprising three lens groups of about F1.5, which is composed so as to cool the video generator with a cooling liquid and is provided with first to third dichroic mirrors DM1, DM2, and DM3 for separating a white light into the three primary colors in order of red, blue, and green.

摘要翻译： 单面液晶背面投影型图像显示装置，其尺寸紧凑并且可以满足亮度和色纯度的要求，并且能够以对比度特性非常清楚地对焦图像，并且具有较少的屏幕变形和投影 透镜单元包括大约F1.5的三个透镜组，其被组合以用冷却液冷却视频发生器，并且设置有第一至第三分色镜DM1，DM2和DM3，用于将白光分离成三个主要 颜色依次为红，蓝，绿。

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：US20050088576A1

公开(公告)日：2005-04-28

申请号：US10978528

申请日：2004-11-02

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

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

IPC分类号： G02B5/26 ,  G02B5/30 ,  G02B13/16 ,  G02B13/18 ,  G02B13/22 ,  G02F1/13 ,  G02F1/1335 ,  G03B21/00 ,  G03B21/10 ,  G03B33/12 ,  H04N5/74 ,  H04N9/31

CPC分类号： H04N9/3141 ,  G02B13/16 ,  G03B21/10 ,  H04N5/7441 ,  H04N9/3108 ,  H04N9/3144 ,  H04N9/317

摘要： An optical projection apparatus includes an optical lighting system provided with a polarized beam splitter for polarizing white light flux from a white light source and combining the white light flux with other light fluxes, thereby taking out a predetermined polarized wave; a multi-lens array consisting of a plurality of lens elements; and an irradiator for separating the white light flux into three primary color light fluxes of red, green, and blue and irradiating each of the three color light fluxes on the same display element at an angle different from the others; and a projecting lens unit used for projecting the three primary color light fluxes modulated by the display element. Color light fluxes modulated by the display element are separated in a horizontal direction of the screen of the display element when passing an injection pupil of the projection lens unit.

公开(公告)号：US20100171937A1

公开(公告)日：2010-07-08

申请号：US12636951

申请日：2009-12-14

申请人： Koji HIRATA ,  Masahiko Yatsu ,  Naoyuki Ogura

发明人： Koji HIRATA ,  Masahiko Yatsu ,  Naoyuki Ogura

IPC分类号： G03B21/28 ,  G02B13/18 ,  G03B21/14 ,  B23P15/24

CPC分类号： G03B21/28 ,  G02B3/02 ,  G02B13/16 ,  G02B13/18 ,  G03B21/006 ,  G03B21/14 ,  G03B21/30 ,  H04N9/3141 ,  Y10T29/49995

摘要： A projection type display apparatus including an oblique projection optical system having a plurality of lenses is disclosed. A lens nearest to a projection screen has a vertical effective image area through which a light flux passes. The lens is arranged at a position not including an optical axis shared by the largest number of lenses among the plurality of lenses. A flat mirror for returning the optical path is arranged between the particular lens and the projection screen at a predetermined angle to the optical axis. An enlarged image obtained by the light flux returned by the flat mirror is formed toward a display screen.

摘要翻译： 公开了一种包括具有多个透镜的倾斜投影光学系统的投影型显示装置。 最靠近投影屏幕的透镜具有通过光束的垂直有效图像区域。 透镜布置在不包括由多个透镜中的最大数量的透镜共享的光轴的位置。 用于返回光路的平面镜以与光轴成预定角度布置在特定透镜和投影屏之间。 通过由平面镜返回的光束获得的放大图像朝向显示屏形成。

公开(公告)号：US20070103604A1

公开(公告)日：2007-05-10

申请号：US11592176

申请日：2006-11-03

申请人： Hiroki Yoshikawa ,  Takanori Hisada ,  Tetsu Ohishi ,  Koji Hirata ,  Naoyuki Ogura

发明人： Hiroki Yoshikawa ,  Takanori Hisada ,  Tetsu Ohishi ,  Koji Hirata ,  Naoyuki Ogura

IPC分类号： H04N5/74

CPC分类号： G03B21/10 ,  G03B21/147 ,  G03B21/28 ,  H04N5/74

摘要： An image that has been displayed on the display screen of an image generator 1 is first passed through a projection lens section 2 consisting of a front group and a rear group. Next after being reflected on the reflecting surface of a free-form surface mirror 5, the image is further reflected by a planar reflecting mirror 4 and then obliquely projected from the lower section of a projection screen 3 onto the screen 3. The front group of the projection lens section 2 is provided for enlarging the image. In order to correct aberration due to oblique projection onto the projection screen, the rear group uses a free-form surface lens that forms a concave shape with respect to the exit side of light from the lens. The free-form surface mirror 5 corrects trapezoidal distortion due to oblique projection onto the projection screen. The free-form surface lens in the rear group of the projection lens section 2 can accommodate changes in environmental conditions by using one edge as a reference edge and rendering the other edge expandable. The free-form surface mirror can likewise use one edge as a reference edge and render the other edge expandable. For adjustment, the free-form surface mirror can also be pivoted about the reference edge.

摘要翻译： 在图像生成器1的显示画面上显示的图像首先通过由前组和后组构成的投影透镜部2。 接下来，在自由曲面镜5的反射面上反射后，图像被平面反射镜4进一步反射，然后从投影屏3的下部倾斜地突出到屏幕3上。 投影透镜部分2的前组被设置用于放大图像。 为了校正由于倾斜投影到投影屏幕上的像差，后组使用相对于来自透镜的光的出射侧形成凹形的自由曲面透镜。 自由曲面镜5校正由于倾斜投影到投影屏幕上的梯形变形。 投影透镜部2的后组中的自由曲面透镜可以通过使用一个边缘作为参考边缘并使另一个边缘可扩展来适应环境条件的变化。 自由曲面镜同样可以使用一个边缘作为参考边缘，并使另一个边缘可扩展。 为了调整，自由曲面反射镜也可围绕参考边缘枢转。

公开(公告)号：US06869184B2

公开(公告)日：2005-03-22

申请号：US10671880

申请日：2003-09-29

申请人： Masahiko Yatsu ,  Koji Hirata ,  Naoyuki Ogura

发明人： Masahiko Yatsu ,  Koji Hirata ,  Naoyuki Ogura

IPC分类号： G02B5/30 ,  G02B27/18 ,  G02B27/28 ,  G03B21/00 ,  G03B21/14

CPC分类号： G02B27/283

摘要： Disclosed is a polarized-light converting unit, which is excellent in contrast performance and realizes high reliability and an increase in its life, and a projector device using the converting unit. The polarized-light converting unit includes first and second polarizing beam splitters provided in an integral form. The first polarizing beam splitter includes two incident planes on which two types of color light are respectively incident. The second polarizing beam splitter includes both a ¼-wave plate and first dichroic mirror, and a ¼-wave plate and a second dichroic mirror, both of which are disposed on two adjacent surfaces different from a junction surface with the first polarizing beam splitter and an outgoing surface thereof.

摘要翻译： 公开了一种偏振光转换单元，其具有优异的对比度性能并且实现高可靠性和增加其寿命，以及使用该转换单元的投影仪设备。 偏振光转换单元包括以整体形式设置的第一和第二偏振分束器。 第一偏振分束器包括两个入射平面，其上分别入射两种类型的彩色光。 第二偏振光束分离器包括¼波片和第一分色镜，以及¼波片和第二分色镜，它们均设置在与第一偏振分束器的接合面不同的两个相邻表面上， 其出射表面。

公开(公告)号：US06801366B2

公开(公告)日：2004-10-05

申请号：US10622642

申请日：2003-07-21

申请人： Koji Hirata ,  Naoyuki Ogura ,  Shigeru Mori ,  Takahiro Yoshida ,  Kazunari Nakagawa

发明人： Koji Hirata ,  Naoyuki Ogura ,  Shigeru Mori ,  Takahiro Yoshida ,  Kazunari Nakagawa

IPC分类号： G02B300

CPC分类号： G02B13/06 ,  H04N5/74

摘要： When a projection lens system used for a rear projection type image display apparatus has a first lens group having an aspherical lens surface, a second lens group, a third lens group sharing almost all the positive refractive power of the overall system, a fourth lens group having an aspherical lens surface, a fifth lens group, and a sixth lens group including a lens having a profile of aspherical surface in which the concave surface thereof faces the screen side and the refractive power in the marginal area is weaker than the refractive power around the optical axis, a projection lens system having a large aperture ratio (low F-number), high focus, wide field angle, and sufficient marginal light amount ratio can be realized at a low cost.

摘要翻译： 当用于背投型图像显示装置的投影透镜系统具有具有非球面透镜表面的第一透镜组，第二透镜组，共享整个系统的几乎全部正折射力的第三透镜组时，第四透镜组 具有非球面透镜表面，第五透镜组和第六透镜组，所述第六透镜组包括具有非球面形状的透镜，其中凹面朝向屏幕侧，并且边缘区域中的折光力弱于周围的折光力 可以以低成本实现光轴，具有大开口率（低F值），高焦距，宽视野角和足够的边缘光量比的投影透镜系统。

公开(公告)号：US06535267B2

公开(公告)日：2003-03-18

申请号：US09886151

申请日：2001-06-22

申请人： Toru Numata ,  Yasuo Otsuka ,  Mikio Shiraishi ,  Koji Hirata ,  Naoyuki Ogura ,  Shigeru Inaoka ,  Kazunari Nakagawa ,  Shigeru Mori ,  Masahiko Yatsu

发明人： Toru Numata ,  Yasuo Otsuka ,  Mikio Shiraishi ,  Koji Hirata ,  Naoyuki Ogura ,  Shigeru Inaoka ,  Kazunari Nakagawa ,  Shigeru Mori ,  Masahiko Yatsu

IPC分类号： G02F11333

CPC分类号： H04N9/3141 ,  G02F1/133308 ,  G02F1/133385 ,  G02F1/133528 ,  H04N5/7441 ,  H04N9/3102

摘要： For obtaining both high brightness under condition of small-sized and simplified structure and suppression of increase in temperature of liquid crystal display elements and polarizing elements, in a liquid crystal display apparatus, comprising: a liquid crystal display element 2 for converting light from a light source into display picture depending on a driving signal; an optical projection system 1b containing a first optical element 1a and for projecting said light signal toward an object of projection; exit side polarizing elements 3b; a holding member 6 for holding them with the liquid crystal display element 2; and cooling medium 5; incident side polarizing elements 3a, wherein, a space is defined by either one of the incident side polarizing elements 3a and the liquid crystal display element 2, the first optical element 1a, between the liquid crystal display element 2 and the first optical element 1a, and the holding member 6, and said space is filled up with the cooling medium 5.

摘要翻译： 为了在液晶显示装置和液晶显示装置的液晶显示装置和液晶显示装置的温度升高的条件下获得高亮度，并且抑制液晶显示元件和偏振元件的温度升高，包括：液晶显示元件2，用于将来自光的光 根据驱动信号将其输入显示图像; 包含第一光学元件1a并用于将所述光信号投射到投影物体的光学投影系统1b; 出射侧偏振元件3b; 用于将其保持在液晶显示元件2上的保持构件6; 和冷却介质5; 入射侧偏振元件3a，其中，由液晶显示元件2和第一光学元件1a之间的入射侧偏振元件3a和液晶显示元件2中的任一个，第一光学元件1a， 和保持构件6，并且所述空间被冷却介质5填充。

公开(公告)号：US08425049B2

公开(公告)日：2013-04-23

申请号：US12636951

申请日：2009-12-14

申请人： Koji Hirata ,  Masahiko Yatsu ,  Naoyuki Ogura

发明人： Koji Hirata ,  Masahiko Yatsu ,  Naoyuki Ogura

IPC分类号： G03B21/22

CPC分类号： G03B21/28 ,  G02B3/02 ,  G02B13/16 ,  G02B13/18 ,  G03B21/006 ,  G03B21/14 ,  G03B21/30 ,  H04N9/3141 ,  Y10T29/49995

摘要： A projection type display apparatus including an oblique projection optical system having a plurality of lenses is disclosed. A lens nearest to a projection screen has a vertical effective image area through which a light flux passes. The lens is arranged at a position not including an optical axis shared by the largest number of lenses among the plurality of lenses. A flat mirror for returning the optical path is arranged between the particular lens and the projection screen at a predetermined angle to the optical axis. An enlarged image obtained by the light flux returned by the flat mirror is formed toward a display screen.

摘要翻译： 公开了一种包括具有多个透镜的倾斜投影光学系统的投影型显示装置。 最靠近投影屏幕的透镜具有通过光束的垂直有效图像区域。 透镜布置在不包括由多个透镜中的最大数量的透镜共享的光轴的位置。 用于返回光路的平面镜以与光轴成预定角度布置在特定透镜和投影屏之间。 通过由平面镜返回的光束获得的放大图像朝向显示屏形成。