公开(公告)号：US08313199B2

公开(公告)日：2012-11-20

申请号：US11871438

申请日：2007-10-12

申请人： Koji Hirata ,  Masahiko Yatsu ,  Takanori Hisada ,  Masayuki Ohki

发明人： Koji Hirata ,  Masahiko Yatsu ,  Takanori Hisada ,  Masayuki Ohki

IPC分类号： G03B21/26 ,  G03B21/56 ,  G02B3/00

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： 一种投影显示系统，包括：投影显示单元，包括光源，图像显示元件，照射在所述图像显示元件上的光束的照明光学系统;以及投影光学系统，将图像光从所述图像显示元件投射到 屏幕。 投影光学系统包括由从图像显示元件顺序排列并相对于光轴对称布置的多个透镜元件的透镜组以及相对于光学轴向不对称成形的反射镜 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。

公开(公告)号：US20120081676A1

公开(公告)日：2012-04-05

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：US20100290010A1

公开(公告)日：2010-11-18

申请号：US12777364

申请日：2010-05-11

申请人： Koji HIRATA ,  Masahiko Yatsu ,  Hidehiro Ikeda

发明人： Koji HIRATA ,  Masahiko Yatsu ,  Hidehiro Ikeda

IPC分类号： G03B21/14 ,  G03B21/62

CPC分类号： G03B21/62 ,  G02B13/18 ,  G03B21/10 ,  H04N7/142

摘要： There is provided a projection apparatus using an oblique projection optical system, which generates little reflection loss by providing a linear Fresnel lens at an incident surface in the case where the apparatus is used as a linear system, wherein said linear Fresnel lens makes total reflection of image light, and is capable of obtaining total surface property with good brightness in a region with small incident angle onto a screen, by using a total reflection Fresnel lens and a refraction Fresnel lens in combination. In addition, total surface property with further good brightness can be obtained by using a plurality of projection image display apparatuses in the same projection apparatus.

摘要翻译： 提供了一种使用倾斜投影光学系统的投影装置，其在将该装置用作线性系统的情况下在入射表面处设置线性菲涅耳透镜而产生很小的反射损失，其中所述线性菲涅耳透镜全部反射 并且通过组合使用全反射菲涅耳透镜和折射菲涅尔透镜，能够在具有小的入射角的区域中以良好的亮度获得在屏幕上的总表面性质。 此外，通过在同一投影装置中使用多个投影图像显示装置，可以获得更高亮度的总表面性质。

公开(公告)号：US20100277703A1

公开(公告)日：2010-11-04

申请号：US12838915

申请日：2010-07-19

申请人： Takanori Hisada ,  Koji Hirata ,  Masahiko Yatsu

发明人： Takanori Hisada ,  Koji Hirata ,  Masahiko Yatsu

IPC分类号： G03B21/28

CPC分类号： G03B21/28

摘要： A projection optical unit for a projection display apparatus, which displays an image upon a projection surface, obliquely, includes a front lens group disposed in a direction from an image display element to a projection surface, a rear lens group, and a reflection mirror formed so that a curvature of a portion for reflecting a light beam incident upon a lower end portion of the projection surface is larger than a curvature of a portion for reflecting a light beam incident upon an upper end of the projection surface. An optical axis of the front lens group and the rear lens group is more inclined with respect to a direction of the portion of the reflection mirror for reflecting the light beam incident upon the lower end portion of the projection surface than a normal line direction of the image display element.

摘要翻译： 一种用于投影显示设备的投影光学单元，其在投影表面上倾斜地显示图像，包括沿从图像显示元件到投影表面的方向设置的前透镜组，后透镜组和形成的反射镜 使得入射到投影表面的下端部分上的反射光束的部分的曲率大于用于反射入射在投影表面的上端的光束的部分的曲率。 前透镜组和后透镜组的光轴相对于反射镜的部分的方向更倾斜，用于反射入射在投影表面的下端部上的光束，而不是垂直方向 图像显示元件。

公开(公告)号：US07766488B2

公开(公告)日：2010-08-03

申请号：US11763465

申请日：2007-06-15

申请人： Koji Hirata ,  Takanori Hisada ,  Masahiko Yatsu

发明人： Koji Hirata ,  Takanori Hisada ,  Masahiko Yatsu

IPC分类号： G03B21/14 ,  G03B21/28

CPC分类号： G03B21/28 ,  G02B17/0852 ,  G03B21/145 ,  H04N9/317

摘要： A projection-type image display apparatus for projecting an image, enlargedly, onto a projection surface, comprises: an image display element; a lens group, being disposed behind the image display element, comprising therein, a front lens group made up with a plural number of lenses, including, at least, a refractive lens, having a positive power and being rotationally symmetric in a surface configuration thereof, and a rear lens group made up with a plural number of lenses, including, at least, a lens having a free curved surface configuration and being rotationally asymmetric, thereby emitting the image displayed on the image display element; a reflection mirror for reflecting the light from the lens group, thereby projection onto the projection surface, obliquely; a first mounting base, on which the rear lens group is mounted; and a rod member, which is provided on the mounting base for moving the mounting base.

摘要翻译： 一种用于将图像放大地投影到投影表面上的投影型图像显示装置，包括：图像显示元件; 设置在图像显示元件后面的透镜组，其中包括由多个透镜构成的前透镜组，至少包括具有正光焦度并在其表面形状中旋转对称的折射透镜 以及由多个透镜构成的后透镜组，至少包括具有自由曲面构造并且旋转非对称的透镜，从而发射显示在图像显示元件上的图像; 用于反射来自透镜组的光的反射镜，从而倾斜地突出到投影表面上; 第一安装基座，其上安装后透镜组; 以及杆构件，其设置在安装基座上用于移动安装基座。

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：US07665849B2

公开(公告)日：2010-02-23

申请号：US11471030

申请日：2006-06-19

申请人： Hidehiro Ikeda ,  Masahiko Yatsu ,  Koji Hirata ,  Kei Adachi

发明人： Hidehiro Ikeda ,  Masahiko Yatsu ,  Koji Hirata ,  Kei Adachi

IPC分类号： G03B21/14

CPC分类号： G03B21/2073 ,  G03B21/208 ,  G03B33/12 ,  H04N9/3117

摘要： A projection type video display apparatus having improved color separating ability is provided. The projection type video display apparatus includes a color separating unit including an entrance plate provided with an aperture through which light beams emitted by a light source travel, an optical integrator, and a plurality of dichroic mirrors disposed with their color separating surfaces extended substantially parallel to the exit surface of the optical integrator and capable of transmitting color light beams of wavelengths in a predetermined wavelength range and of reflecting color light beams of wavelengths outside the predetermined wavelength range.

摘要翻译： 提供了具有改进的分色能力的投影型视频显示装置。 投影型视频显示装置包括一个分色单元，它包括一个入口板，该入口板设置有一个入口板，入口板设置有一个由光源发出的光束行进的孔径，一个光学积分器和多个分色镜，它们的颜色分离表面基本平行于 光学积分器的出射表面，并能够透射预定波长范围内的波长的彩色光束并反射预定波长范围外的波长的彩色光束。

公开(公告)号：US20090207381A1

公开(公告)日：2009-08-20

申请号：US12419423

申请日：2009-04-07

申请人： Koji Hirata ,  Masahiko Yatsu

发明人： Koji Hirata ,  Masahiko Yatsu

IPC分类号： G03B21/28 ,  G03B21/14

CPC分类号： H04N9/3144 ,  H04N9/3105

摘要： A projection type image display apparatus is provided which includes a housing to hold an optical system including multi-lenses, a polarized-light conversion element and the color separation portion The housing operates to provide an optical path between a light source, located outside the housing, and penetration-type image display elements and an optical synthesizing portion also located outside of the housing.

摘要翻译： 提供一种投影型图像显示装置，其包括用于保持包括多透镜的光学系统的壳体，偏振光转换元件和分色部分。外壳操作以在位于外壳外部的光源之间提供光路 ，以及穿透型图像显示元件和也位于壳体外部的光学合成部。

公开(公告)号：US07553031B2

公开(公告)日：2009-06-30

申请号：US11200353

申请日：2005-08-08

申请人： Takanori Hisada ,  Masahiko Yatsu ,  Koji Hirata

发明人： Takanori Hisada ,  Masahiko Yatsu ,  Koji Hirata

IPC分类号： G03B21/28 ,  G02B5/10 ,  H04N3/23 ,  H04N5/74 ,  G02F1/00

CPC分类号： G03B21/10 ,  G02B17/0816 ,  G03B21/28

摘要： In a projection type image display apparatus, for enlarging an image on a image display apparatus 1 by means of a projection lens 2, thereby projecting the enlarged image onto a screen 6, obliquely, being inclined thereto, between the projection lens 2 and a rear-surface mirror 5, there are disposed free shaped surface mirrors 3 and 4, each having a free shaped surface for compensating a trapezoidal distortion due to oblique projection of the enlarged image. The surface configuration of the free shaped surface mirror is so shaped as to satisfy a following equation: |L1−L2|>1.4·Dv if assuming that a distance for a light beam of an upper end of the enlarged image to reach the screen after being reflected upon a free shaped surface is “L1”, a distance for a light beam of a lower end of the enlarged image to reach the screen after being reflected upon the free shaped surface is “L2”, and a distance from an upper end of an image on the screen to a lower end thereof is “Dv”.

摘要翻译： 在投影型图像显示装置中，为了通过投影透镜2放大图像显示装置1上的图像，从而将放大图像倾斜地投影到屏幕6上，在投影透镜2和后方 表面镜5设置有自由形状的表面镜3和4，每个具有自由形状的表面，用于补偿由于放大图像的倾斜投影引起的梯形失真。 自由形状的表面镜的表面形状被形成为满足以下等式：<？in-line-formula description =“In-line formula”end =“lead”？> | L1-L2 |> 1.4.Dv 如果假设放大图像的上端的光束的距离在自由形状的反射之后到达屏幕，则<？in-line-formula description =“In-line Formulas”end =“tail”？> 表面为“L1”，放大图像的下端的光束在被自由形状的表面反射之后到达屏幕的距离为“L2”，并且距离屏幕上的图像的上端的距离 到其下端是“Dv”。

公开(公告)号：US07553025B2

公开(公告)日：2009-06-30

申请号：US11407044

申请日：2006-04-20

申请人： Koji Hirata ,  Masahiko Yatsu

发明人： Koji Hirata ,  Masahiko Yatsu

IPC分类号： G03B21/14 ,  G03B21/28 ,  G02B17/04 ,  G02B27/12 ,  G02B27/28 ,  H04N9/07

CPC分类号： G02B5/3058 ,  G02B27/283 ,  G03B21/2073 ,  H04N9/3105 ,  H04N9/3167

摘要： A polarization splitting section has a structure in that a polarization splitting layer is formed of a light reflecting grid member which is arranged in a grid-shaped pattern on an optically-transparent substrate, and an optically-transparent medium is filled between the grid member and the substrate in contact with the grid member surface and the substrate surface, and the grid member and the filled optically-transparent medium are bonded to the substrate with another adhesive agent or tackiness agent formed of an optically-transparent medium interposed. The polarization splitting layer is partly protruded externally from the surfaces of prism materials.

摘要翻译： 偏振分离部具有以下结构：偏光分离层由在光学透明基板上以格子状排列的光反射栅格部件形成，光栅透明介质填充在栅格部件与 与栅格构件表面和衬底表面接触的衬底以及栅格构件和填充的光学透明介质通过插入光学透明介质形成的另一粘合剂或粘合剂粘合到衬底上。 偏振分离层部分地从棱镜材料的表面向外突出。