公开(公告)号：US06798580B2

公开(公告)日：2004-09-28

申请号：US10295373

申请日：2002-11-14

申请人： Tetsu Ohishi ,  Hiroki Yoshikawa ,  Satoshi Ouchi ,  Taro Imahase ,  Tomohiro Miyoshi

发明人： Tetsu Ohishi ,  Hiroki Yoshikawa ,  Satoshi Ouchi ,  Taro Imahase ,  Tomohiro Miyoshi

IPC分类号： G02B2714

CPC分类号： G02B27/1033 ,  G02B26/00 ,  G02B27/1053 ,  G02B27/148 ,  H04N5/7441 ,  H04N9/3117

摘要： A projection type image display apparatus includes a light axis moving unit for moving a direction of a light from a light source substantially in parallel periodically at a predetermined rate, a light separating unit for separating the light from the light axis moving unit into a plurality of color light components of predetermined wavelength bands, and a radiation unit for radiating the color light components from the light separating unit on an image display device, projecting an optical image corresponding to the image signal in enlarge form.

摘要翻译： 投影型图像显示装置包括：光轴移动单元，用于以预定速率周期性地移动来自光源的光的方向;光分离单元，用于将光从光轴移动单元分离成多个 预定波长带的彩色光分量，以及用于将图像显示装置上的来自光分离单元的彩色光分量辐射的放射单元，以放大形式投影与图像信号对应的光学图像。

公开(公告)号：US07440186B2

公开(公告)日：2008-10-21

申请号：US11281819

申请日：2005-11-18

申请人： Hiroki Yoshikawa ,  Tetsu Ohishi ,  Daisuke Imafuku ,  Koji Hirata

发明人： Hiroki Yoshikawa ,  Tetsu Ohishi ,  Daisuke Imafuku ,  Koji Hirata

IPC分类号： G03B21/56 ,  G02B3/08

CPC分类号： G03B21/10 ,  G03B21/625

摘要： The present invention provides a technology suitable for shortening a depth of a image display apparatus while obtaining a picture of high quality. According to the invention, a total reflection prism portion is provided on a side of a Fresnel lens sheet toward a picture source. The total reflection prism portion reflects an incident light to a direction toward an optic axial center of the Fresnel lens sheet to have the same outgoing. On the other hand, a first refractive prism portion, by which light of a predetermined incident angle or less is refracted to outgo to a direction along an optical axis of the Fresnel lens sheet, and a second refractive prism portion, by which light reflected to the direction toward the optic axial center of the Fresnel lens sheet is changed to the direction along the optical axis.

摘要翻译： 本发明提供一种适于在获得高品质图像的同时缩短图像显示装置的深度的技术。 根据本发明，在菲涅尔透镜片的朝向图像源的一侧设置全反射棱镜部分。 全反射棱镜部分将入射光反射到朝向菲涅耳透镜片的光学轴向中心的方向以具有相同的出射。 另一方面，第一折射棱镜部分，通过该第一折射棱镜部分，预定入射角或更小的光被折射到沿着菲涅尔透镜片的光轴的方向偏离，并且第二折射棱镜部分被反射到 朝向菲涅尔透镜片的光轴中心的方向改变为沿着光轴的方向。

公开(公告)号：US20070052341A1

公开(公告)日：2007-03-08

申请号：US11452373

申请日：2006-06-14

申请人： Daisuke Imafuku ,  Hiroki Yoshikawa ,  Tetsu Ohishi

发明人： Daisuke Imafuku ,  Hiroki Yoshikawa ,  Tetsu Ohishi

IPC分类号： H01J1/62

CPC分类号： H05B33/22 ,  G09G3/3413 ,  G09G2310/024 ,  G09G2320/0626 ,  G09G2360/145 ,  H04N9/3155 ,  H04N9/3182 ,  H04N9/3194

摘要： The invention provides a technology suited to suppress decrease in the brightness of an image while preventing reduction in the contrast of the image caused by external light coming from the outside (from the viewer side of the image) of a screen. An image display surface (screen) of a projection type display device is provided with a front protective sheet including an optical filter member for absorbing specific wavelengths in the external light, especially among peak wavelengths of a three-wavelength fluorescent lamp. Moreover, LED's of three colors are used as a light source for forming an image. At least one of these LED's emits a light of a different wavelength from a peak wavelength that the front protective sheet absorbs. By this configuration, it is possible to prevent reduction in the contrast of an image caused by external light without decreasing the brightness of the image display device.

摘要翻译： 本发明提供了一种适合于抑制图像的亮度降低的技术，同时防止从外部（来自图像的观看者侧）的外部光引起的图像的对比度降低。 投影型显示装置的图像显示面（屏幕）设置有前保护片，其包括用于吸收外部光中的特定波长的滤光器构件，特别是在三波长荧光灯的峰值波长中。 此外，三种颜色的LED用作形成图像的光源。 这些LED中的至少一个发射与前保护片吸收的峰值波长不同波长的光。 通过这种配置，可以防止由外部光引起的图像的对比度降低，而不会降低图像显示装置的亮度。

公开(公告)号：US20070002281A1

公开(公告)日：2007-01-04

申请号：US11450677

申请日：2006-06-09

申请人： Hiroki Yoshikawa ,  Takanori Hisada ,  Tetsu Ohishi ,  Koji Hirata ,  Daisuke Imafuku

发明人： Hiroki Yoshikawa ,  Takanori Hisada ,  Tetsu Ohishi ,  Koji Hirata ,  Daisuke Imafuku

IPC分类号： G03B21/14

CPC分类号： G03B21/10 ,  G03B21/625

摘要： A fresnel lens sheet has a fresnel center in the vicinity of a lower end, and includes first and second fresnel lens portions respectively formed into concentrically circular shapes. The first fresnel lens portion exists inside a reference circumference, and the second fresnel lens portion exists outside the reference circumference. A conjugate point distance of the second fresnel lens portion is shorter than a conjugate point distance of the first fresnel lens portion. The reference circumference passes through vicinities of cross points between a horizontal centerline, which halves the fresnel lens sheet into upper and lower portions, and left and right ends of the fresnel lens sheet.

摘要翻译： 菲涅尔透镜片在下端附近具有菲涅耳中心，并且包括分别形成为同心圆形的第一和第二菲涅耳透镜部。 第一菲涅耳透镜部分存在于参考圆周内，第二菲涅尔透镜部分存在于参考圆周外。 第二菲涅尔透镜部分的共轭点距离比第一菲涅尔透镜部分的共轭点距离短。 参考圆周穿过菲涅耳透镜片的水平中心线之间的交叉点附近，该中心线将菲涅尔透镜片半部分分成上下部分，以及左右两端。

公开(公告)号：US20060227299A1

公开(公告)日：2006-10-12

申请号：US11258384

申请日：2005-10-26

申请人： Takanori Hisada ,  Hiroki Yoshikawa ,  Tetsu Ohishi ,  Masahiko Yatsu ,  Koji Hirata

发明人： Takanori Hisada ,  Hiroki Yoshikawa ,  Tetsu Ohishi ,  Masahiko Yatsu ,  Koji Hirata

IPC分类号： G03B21/28

CPC分类号： G03B21/10 ,  G02B13/16 ,  G02B27/0025

摘要： In the image display device, a projection lens including a plurality of lenses for enlarging an image from an image display element is constituted of a front group and a rear group. The rear group includes at least one free-shaped-surface lens including a surface having a rotationally asymmetrical shape. Furthermore, the device includes at least one free-shaped-surface mirror having a rotationally asymmetrical reflection surface. Accordingly, a set can be formed to be compact while correcting trapezoidal distortion and aberration.

摘要翻译： 在图像显示装置中，包括用于从图像显示元件放大图像的多个透镜的投影透镜由前组和后组构成。 后组包括至少一个具有旋转不对称形状的表面的自由形状的透镜。 此外，该装置包括至少一个具有旋转不对称反射表面的自由形状的反射镜。 因此，可以在校正梯形失真和像差的同时形成一个组合。

公开(公告)号：US06462794B1

公开(公告)日：2002-10-08

申请号：US09414481

申请日：1999-10-08

申请人： Hiroki Yoshikawa ,  Tetsu Ohishi ,  Hideo Tanide ,  Takesuke Maruyama ,  Goro Ohnishi ,  Takashi Iwata ,  Takeshi Igarashi

发明人： Hiroki Yoshikawa ,  Tetsu Ohishi ,  Hideo Tanide ,  Takesuke Maruyama ,  Goro Ohnishi ,  Takashi Iwata ,  Takeshi Igarashi

IPC分类号： G02F11335

CPC分类号： G02B3/0062 ,  G02B3/0031 ,  G02B3/0068 ,  G02B3/0075 ,  G02F1/133526 ,  H04N5/7441 ,  H04N9/3141 ,  H04N9/3147

摘要： An enlarging unit comprises a concave Fresnel lens warped convexly toward an image forming unit side, the image forming unit is held between a light transmissible support plate warped convexly toward the image forming unit side and the enlarging unit warped convexly toward the image forming unit side, and peripheries of the support plate and the enlarging unit are fixed or semi-fixed. Thereby, deformation caused when the incident side and emission side micro-lens arrays are molded and deformation due to environmental temperature and humidity change are corrected, and both components are always maintained in close contact.

摘要翻译： 放大单元包括朝向图像形成单元侧凸出翘曲的凹形菲涅尔透镜，图像形成单元保持在朝向图像形成单元侧凸形弯曲的透光性支撑板和朝向图像形成单元侧凸起的扩大单元之间， 并且支撑板和放大单元的周边是固定的或半固定的。 由此，修正了入射侧和发射侧微透镜阵列成型引起的变形，并且由于环境温度和湿度变化引起的变形，并且两者都始终保持紧密接触。

公开(公告)号：US06201516B1

公开(公告)日：2001-03-13

申请号：US08951293

申请日：1997-10-16

申请人： Hideo Tanide ,  Tetsu Ohishi ,  Hiroki Yoshikawa

发明人： Hideo Tanide ,  Tetsu Ohishi ,  Hiroki Yoshikawa

IPC分类号： G09G500

CPC分类号： G09F19/18 ,  A63J25/00 ,  A63J2005/002 ,  H04N9/3147

摘要： In a description and drawings of the present application disclosed are, as the invention, (1) a projector for projecting an optimum image face having a convex configuration at a side of the projector, (2) a projecting system provided with the projector and a translucent screen with a substantially spherical configuration on which an image from the projector is formed, (3) a system for sensation provided with the projecting system, a seat at which a viewer is seated, a motion drive device for displacing the seat, a motion control device for controlling operation of the motion drive device, and an image control device for controlling an image projected by the projector while instructing the motion drive device to displace the seat in accordance with a change in the image, and (4) a method of manufacturing a screen provided with a light diffusing layer forming step of warming and softening a transparent thermoplastic resin sheet including a particle of a light diffusion material and pressing a light transmitting layer with a convex configuration against the thermoplastic resin sheet to closely fix thereto.

摘要翻译： 在所公开的本申请的描述和附图中，作为本发明，（1）一种投影仪，用于在投影仪的一侧投影具有凸形结构的最佳图像面，（2）设置有投影仪的投影系统和 具有基本上球形的半透明屏幕，其上形成有来自投影仪的图像，（3）设置有投影系统的感觉系统，观察者坐下的座椅，用于移动座椅的运动驱动装置，运动 用于控制运动驱动装置的操作的控制装置，以及图像控制装置，用于在指示运动驱动装置根据图像的变化来移动座椅时控制由投影仪投影的图像，以及（4） 制造具有光漫射层形成步骤的屏幕，所述光扩散层形成步骤使包含光漫射材料的颗粒的透明热塑性树脂片材变暖并软化并压制 将具有凸形结构的透光层抵靠热塑性树脂片紧密固定。

公开(公告)号：US5926153A

公开(公告)日：1999-07-20

申请号：US592177

申请日：1996-01-26

申请人： Tetsu Ohishi ,  Takahiko Yoshida ,  Hiroki Yoshikawa ,  Yutaka Matsuda ,  Hideo Tanide ,  Shigeru Mori ,  Atsuo Osawa ,  Koji Hirata

发明人： Tetsu Ohishi ,  Takahiko Yoshida ,  Hiroki Yoshikawa ,  Yutaka Matsuda ,  Hideo Tanide ,  Shigeru Mori ,  Atsuo Osawa ,  Koji Hirata

IPC分类号： G03B21/62 ,  G03B21/10 ,  G09B9/32 ,  H04N5/74 ,  B09G5/00

CPC分类号： G09B9/32

摘要： A multi-display apparatus includes a plurality of rear projection-type display devices each in which projection light from image sources is projected through projection lenses onto a rear projection surface of a rear projection screen to form a picture image on a front viewing surface of the rear projection screen, the plurality of rear projection-type display devices being combined together in contiguous relation to one another to form a large screen. An overall front viewing surface of the large screen is formed into a concave surface curved both in a horizontal visibility angle direction and a vertical visibility angle direction. A light-absorbing portion is formed on the front viewing surface of the rear projection screen, and the light-absorbing portion absorbs projection light which passes through one rear projection screen, and is incident as external light on another rear projection screen, thereby preventing a picture image from being degraded.

摘要翻译： 多显示装置包括多个后投影式显示装置，每个背投影型显示装置，其中来自图像源的投影光通过投影透镜投射到背投屏幕的后投影表面上，以在前投影屏幕的前视面上形成图像 背投影屏幕，多个后投影式显示装置彼此连续地组合在一起形成大屏幕。 大屏幕的整体前视面形成为在水平可视角度方向和垂直视角方向上均弯曲的凹面。 在后投影屏幕的前视面形成有吸光部，吸光部吸收通过一个背面投影用屏幕的投影光，作为外部光入射到另一个后投影屏上，从而防止 图片图像降级。

公开(公告)号：US07961400B2

公开(公告)日：2011-06-14

申请号：US12536163

申请日：2009-08-05

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： G02B9/00 ,  G02B17/00

CPC分类号： G02B17/0852

摘要： A projection image display device is disclosed in which a trapezoidal distortion and/or aberration are restrained when an image is enlarged and projected obliquely onto a screen. An image generator is connected to an optical system base in such a manner that at least an inclination thereof (on an axis parallel to X axis) with respect to a vertical line and a distance thereof in forward and backward direction (Z axis direction) can be adjusted by an adjusting mechanism. Further, a projecting lens 2 as a first optical system and a free-form curved surface mirror as a second optical system are fixed to the optical system base. The free-form curved surface mirror is rotatable (on an rotary axis parallel to X axis) with respect to the vertical line at a substantial center of the free-form curved surface mirror.

摘要翻译： 公开了一种投影图像显示装置，其中当图像被放大并倾斜地投影到屏幕上时，限制了梯形失真和/或像差。 图像发生器以这样的方式连接到光学系统基座，使得至少其相对于垂直线（在X轴上平行的轴线）的倾斜度及其在前后方向（Z轴方向）上的距离可以 通过调整机构进行调整。 此外，作为第一光学系统的投影透镜2和作为第二光学系统的自由曲面镜被固定到光学系统基座。 自由曲面镜在相对于自由曲面镜的大致中心处的垂直线是可旋转的（在平行于X轴的旋转轴上）。

公开(公告)号：US07670007B2

公开(公告)日：2010-03-02

申请号：US11473087

申请日：2006-06-23

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

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

IPC分类号： G03B21/14 ,  G03B21/28 ,  G02B7/02

CPC分类号： G03B21/10 ,  G02B3/02 ,  G02B13/16 ,  G02B13/18 ,  G02B27/0025 ,  G03B21/147 ,  G03B21/28

摘要： A projection display is capable of suppressing both the trapezoidal distortion of an enlarged image projected on a screen by oblique projection and aberrations resulting from oblique projection and includes a projection optical system provided with lenses that can be easily manufactured and assembled. The projection optical system for obliquely projecting an image formed by a display device on the screen includes a free curved lens having a rotationally asymmetric free curved surface. The free curved lens has fringing parts having outlines of a shape coinciding with an arc of a circle having the center on the optical axis of the free curved lens.

摘要翻译： 投影显示器能够通过倾斜投影和由倾斜投影产生的像差来抑制投影在屏幕上的放大图像的梯形失真，并且包括具有容易制造和组装的透镜的投影光学系统。 用于将由显示装置形成的图像倾斜投影在屏幕上的投影光学系统包括具有旋转非对称自由曲面的自由曲面透镜。 自由弯曲透镜具有边缘部分，其具有与具有在自由曲面透镜的光轴上的中心的圆弧重合的形状轮廓。