公开(公告)号：US20050117124A1

公开(公告)日：2005-06-02

申请号：US10922225

申请日：2004-08-20

申请人： Koji Hirata ,  Shuji Kato ,  Hidehiro Ikeda ,  Masahiro Yamamoto

发明人： Koji Hirata ,  Shuji Kato ,  Hidehiro Ikeda ,  Masahiro Yamamoto

IPC分类号： G02B13/16 ,  G02B13/18 ,  G03B21/00 ,  G03B21/10 ,  G03B21/14

CPC分类号： H04N9/3105 ,  G03B21/10

摘要： The present invention relates to a rear projection type image display device comprising projection lenses (2, 3) for projecting an image displayed on an image display element onto a transmission type screen (6) on a larger scale, an optical path turn-back mirror (7) for turning back halfway a light beam projected from the projection lenses, and a drive circuit for displaying an image on the image display element, that are fixedly housed within a housing (5). When a diagonal size of the transmission type screen (6), the depth of the housing (5), and the length from a lower end of the screen (6) to a lower end of the housing (5), are assumed to be SS (inch), D (inch), and L (inch), respectively, the following conditions are satisfied: SS>40, D≦SS/3.0, L≦SS/10.9

摘要翻译： 背投影型图像显示装置技术领域本发明涉及一种背投影型图像显示装置，其包括用于将显示在图像显示元件上的图像大规模投影到透射型屏幕（6）上的投影透镜（2,3），光路反向反射镜 （7），用于将从投影透镜投射的光束中途回转，以及用于在图像显示元件上显示图像的驱动电路，其固定地容纳在壳体（5）内。 当透射型屏幕（6）的对角线尺寸，壳体（5）的深度以及从屏幕（6）的下端到壳体（5）的下端的长度被假定为 SS（英寸），D（英寸）和L（英寸），满足以下条件：<？in-line-formula description =“In-line formula”end =“lead”？> SS> 40， D <= SS / 3.0，L <= SS / 10.9 <？in-line-formula description =“In-line Formulas”end =“tail”？>

公开(公告)号：US20050073652A1

公开(公告)日：2005-04-07

申请号：US10993945

申请日：2004-11-18

申请人： Masahiko Yatsu ,  Koji Hirata ,  Futoshi Yamasaki

发明人： Masahiko Yatsu ,  Koji Hirata ,  Futoshi Yamasaki

IPC分类号： G02F1/13 ,  G02B27/28 ,  G02F1/1335 ,  G03B21/00 ,  H04N9/31

CPC分类号： H04N9/3105 ,  G02B27/283

摘要： By making the beam polarization state in a cross prism having a dichroic function for an incident beam on a reflection type liquid crystal panel the same as that for a reflected ON beam, a small-sized, low cost projection type projector apparatus is provided. A Faraday rotator having a Faraday rotation angle of 45 degrees is disposed on an optical path between a PBS and a cross prism. A half-wave plate having such a polarization axis as to rotate a polarization angle of linearly polarized light by 45 or 135 degrees is disposed on an optical immediately before or behind the Faraday rotator.

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：US06863418B2

公开(公告)日：2005-03-08

申请号：US10199406

申请日：2002-07-19

申请人： Nobuo Masuoka ,  Koji Hirata ,  Ryuji Kurihara ,  Yoshie Kodera

发明人： Nobuo Masuoka ,  Koji Hirata ,  Ryuji Kurihara ,  Yoshie Kodera

IPC分类号： G03B21/00 ,  F21S2/00 ,  F21V7/00 ,  F21V7/10 ,  F21V7/20 ,  F21V7/22 ,  F21V19/00 ,  F21V29/02 ,  F21Y101/00 ,  G03B21/14 ,  F21K7/00

CPC分类号： F21V7/22 ,  F21V7/10 ,  F21V19/0005 ,  F21V29/505

摘要： Provided is a projector light source which can effectively project a light beam having a sufficient volume from a lamp as a light source, and which is highly accurate and is excellent in workability. The projector light source comprising an arc tube for emitting a light beam; and a concave reflector including a hold part for holding the arc tube, and having a concave reflection surface for reflecting the light beam from the arc tube so that the light beam outgoes through an opening of the reflector, the concave reflector comprising a first reflector located in the vicinity of the hold part for holding the light emitting tube, and second reflector located in a part other than the hold part, and made of a material different from that of the first reflector. Further, the first reflector is made of heat-resistant glass, and the second reflector is made a material containing a heat-resistant organic material having a thermal deformation temperature which is lower than that of the heat-resistant glass.

摘要翻译： 本发明提供一种能够有效地投射具有足够体积的灯作为光源的投影光源，其高精度且加工性优异。 投影光源包括用于发射光束的电弧管; 以及包括用于保持所述电弧管的保持部分的凹面反射器，并且具有用于反射来自所述电弧管的光束的凹面反射面，使得所述光束通过所述反射器的开口而偏离，所述凹面反射器包括位于 在用于保持发光管的保持部分附近，以及位于与保持部以外的部分中的第二反射镜，并且由与第一反射器不同的材料制成。 此外，第一反射器由耐热玻璃制成，并且第二反射器被制成含有热变形温度低于耐热玻璃的热变形温度的耐热有机材料的材料。

公开(公告)号：US20050012870A1

公开(公告)日：2005-01-20

申请号：US10842936

申请日：2004-05-10

申请人： Koji Hirata ,  Masahiko Yatsu

发明人： Koji Hirata ,  Masahiko Yatsu

IPC分类号： G02B27/18 ,  G02F1/133 ,  G03B21/00 ,  G03B21/10 ,  H04N5/66 ,  H04N5/74 ,  H04N9/31

CPC分类号： H04N9/3105

摘要： The system provides a projection-type video display device with high image quality and high reliability. The system improves color purity by cutting the yellow component from red and green, enhances the optical energy balance of the three colors by providing a reflection-type attenuation filter for reflecting light in the green optical path. The system also improves contrast characteristics by providing an optical phase difference compensator in the green optical path and increases durability of a video display element by arranging two optical parts having ultraviolet reflection coating in the blue optical path. Also an ultraviolet absorption filter for the incidence side of a blue liquid crystal panel is described.

摘要翻译： 该系统提供了具有高图像质量和高可靠性的投影型视频显示设备。 该系统通过从红色和绿色切割黄色成分来提高颜色纯度，通过提供用于反射绿色光路中的光的反射型衰减滤光片来增强三种颜色的光能平衡。 该系统还通过在绿色光路中提供光学相位差补偿器并且通过在蓝色光路中布置具有紫外线反射涂层的两个光学部件来增加视频显示元件的耐久性，来改善对比度特性。 还描述了用于蓝色液晶面板的入射侧的紫外线吸收滤光器。

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：US06768594B2

公开(公告)日：2004-07-27

申请号：US10113337

申请日：2002-03-28

申请人： Daisuke Imafuku ,  Naoyuki Ogura ,  Kazunari Nakagawa ,  Koji Hirata ,  Hidehiro Ikeda ,  Shuji Kato

发明人： Daisuke Imafuku ,  Naoyuki Ogura ,  Kazunari Nakagawa ,  Koji Hirata ,  Hidehiro Ikeda ,  Shuji Kato

IPC分类号： G02B300

CPC分类号： G02B13/08

摘要： In a projection lens, there are arranged in order from a screen side, a first lens group including a meniscus lens having a convex lens surface in a central portion toward a screen with refracting power, a second lens group including a lens having a convex lens surface in a central portion toward a video generating source, a third lens group including a lens having convex lens surfaces in both sides with positive refracting power, a fourth lens group including a lens having a convex lens surface in a central portion toward the video generating source with positive refracting power, and a fifth lens group including a lens having a concave lens surface toward the screen with negative refracting power. An entrance pupil is arranged between incident and emitting surfaces of a power lens.

摘要翻译： 在投影透镜中，从屏幕侧依次配置第一透镜组，第一透镜组包括具有中心部分的具有折射力的屏幕的凸透镜表面的弯月形透镜;第二透镜组，包括具有凸透镜的透镜 在朝向视频产生源的中心部分中的表面;第三透镜组，包括具有正折射力的两侧具有凸透镜表面的透镜;第四透镜组，包括在朝向视频产生的中心部分具有凸透镜表面的透镜 具有正折射力的源;以及第五透镜组，包括具有朝向屏幕的凹透镜表面的透镜，具有负折射率。 入射光瞳配置在功率透镜的入射面和发射面之间。

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：US5967506A

公开(公告)日：1999-10-19

申请号：US846208

申请日：1997-04-28

申请人： Wataru Miki ,  Koji Hirata

发明人： Wataru Miki ,  Koji Hirata

IPC分类号： B65H5/06 ,  B65H9/06 ,  B65H9/14 ,  B65H5/00

CPC分类号： B65H9/06

摘要： A printer constituted to drive a pair of feed rollers FR3 and a pair of resist rollers RR so that the leading end of paper P may one stop at a position of a paper sensor S1 at the upstream side when reaching the resist rollers RR and then the entire paper P may be conveyed at a second conveying speed, when conveying a sheet of paper P at a relatively fast first conveying speed by the feed rollers FR3, and conveying at a second conveying speed lower than the first conveying speed by aligning the leading end by the resist rollers RR. It solves the problems of error in printing starting position due to slipping-out of the leading end of the paper from the resist rollers, failure in control to a desired deflection amount when deflecting the paper by colliding with the resist rollers, impact noise when the paper collides with the resist rollers, especially impact noise in thick paper, and possibility of oblique running after passing through the resist rollers.

摘要翻译： 打印机构造成驱动一对进给辊FR3和一对阻挡辊RR，使得纸张P的前端可以在达到抵抗辊RR时在上游侧的纸张传感器S1的位置处停止，然后 当通过进给辊FR3以相对较快的第一输送速度传送纸张P时，可以以第二传送速度传送整个纸张P，并且以低于第一传送速度的第二传送速度传送，通过将前端 通过阻挡辊RR。 解决了由于从阻挡辊滑出纸张的前端而导致打印开始位置错误的问题，当通过与阻挡辊碰撞而使纸张偏转时，控制到期望的偏转量，当冲击噪音时 纸与抵抗辊碰撞，特别是厚纸中的冲击噪声，以及通过阻力辊后倾斜运行的可能性。

公开(公告)号：US5368290A

公开(公告)日：1994-11-29

申请号：US3801

申请日：1993-01-13

申请人： Hideyuki Nanba ,  Koji Hirata ,  Shigenori Sasaki

发明人： Hideyuki Nanba ,  Koji Hirata ,  Shigenori Sasaki

IPC分类号： B41J13/00 ,  B65H5/06 ,  B65H5/36 ,  B65H5/02

CPC分类号： B41J13/00 ,  B65H5/06 ,  B65H5/36

摘要： A paper transport mechanism which is suited for use in an image forming apparatus such as a copying machine which allows the user to more easily remove paper jammed between guide plates. The paper transport mechanism includes at least three guide plates which engage one another when the transport mechanism is in use, but may be separated, each from the other, in order to clear a jammed paper path. The first guide plate has an open and a closed position. The second and third guide plates each have rollers attached. When the paper transport mechanism is in use, the first guide plate is in the closed position and the rollers of the second and third guide plates press against one another and transport paper therebetween. When a paper jam occurs, the first guide plate is moved to the open position and the second and third guide plates and their associated rollers are separated to allow access to any paper jammed therebetween.

摘要翻译： 适用于诸如复印机的图像形成装置的纸张传送机构，其允许用户更容易地去除在引导板之间堵塞的纸张。 纸传送机构包括至少三个引导板，当传送机构在使用中时，至少三个彼此接合，并可彼此分开的导向板，以便清除卡住的纸张路径。 第一导板具有打开和关闭位置。 第二和第三导板各自具有连接的辊。 当使用纸张传送机构时，第一导板处于关闭位置，并且第二和第三导板的辊彼此压靠并在其间传送纸张。 当卡纸发生时，第一导板移动到打开位置，并且第二和第三导板及其相关联的辊分离，以允许访问在其间卡住的任何卡纸。