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    • 11. 发明申请
    • PROJECTION TYPE DISPLAY APPARATUS, REAR PROJECTOR AND MULTI-VISION SYSTEM
    • 投影类型显示设备,后投影机和多视觉系统
    • US20070013880A1
    • 2007-01-18
    • US11533598
    • 2006-09-20
    • Yoshimasa FushimiYoshihiro MasumotoMitsuhiro Wada
    • Yoshimasa FushimiYoshihiro MasumotoMitsuhiro Wada
    • G03B21/20
    • H04N9/3114G02B19/0028G02B19/0047G02B26/0841G03B21/20H04N5/7416H04N5/7458H04N9/3141
    • The present invention provides a small projection type display apparatus capable of suppressing an optical path of incident light and an optical path of output light in a reflection type light valve from being overlapped with each other and obtaining a projected image of high quality; a rear projector and a multi-vision system using the same. The projection type display apparatus is composed of an illumination optical system 2 for collecting light radiated from a light source 1 to form illumination light, a reflection type light valve 6 for reflecting the illumination light to output modulated light forming an optical image, a projection lens system 7 for projecting an optical image formed by the reflection type light valve, and a lens element 5 with a positive power. The lens element 5 is composed of one plano-convex lens, and is placed between the reflection type light valve and the projection lens system with a convex surface directed to the projection lens system, in such a manner that the illumination light passes through the lens element to illuminate the reflection type light valve, and the modulated light output from the reflection type light valve passes through the lens element to be incident upon the projection lens system.
    • 本发明提供一种能够抑制入射光的光路和反射型光阀中的输出光的光路彼此重叠并获得高品质的投影图像的小型投影型显示装置。 后投影机和使用其的多视觉系统。 投影型显示装置由用于收集从光源1照射的光以形成照明光的照明光学系统2,反射型光阀6,用于反射照明光以输出形成光学图像的调制光,投影透镜 用于投影由反射型光阀形成的光学图像的系统7和具有正光焦度的透镜元件5。 透镜元件5由一个平凸透镜构成,并且以照明光通过透镜的方式设置在反射型光阀和投影透镜系统之间,具有朝向投影透镜系统的凸面 元件以照亮反射型光阀,并且从反射型光阀输出的调制光通过透镜元件入射到投影透镜系统。
    • 17. 发明申请
    • PROJECTION TYPE IMAGE DISPLAY DEVICE
    • 投影类型图像显示设备
    • US20100171927A1
    • 2010-07-08
    • US12663791
    • 2008-06-04
    • Hiroshi KitanoYoshimasa Fushimi
    • Hiroshi KitanoYoshimasa Fushimi
    • G03B21/14G02B26/00G02F1/13
    • G02B26/06G02B5/3083G02B27/48G03B21/2033G03B21/208G03B33/12H04N9/3105H04N9/3161H04N9/3164
    • Red, green, and blue laser light emitted from laser light sources 1-3 is transformed into substantially parallel beams by collimator lenses 4-6, collected by microlens arrays 7-9, and rendered uniform by rod integrators 10-12, whereupon it is used to illuminate spatial light modulation elements 16-18 and subjected to modulation. The modulated laser light exiting from the spatial light modulation elements 16-18 is recombined using a beam-combining prism 19 and subjected to pixel separation using a birefringent plate 20, which is rotationally driven by a birefringent plate rotary drive unit 26, after which it is projected upon a screen 22 using a projection optical system 21. The birefringent plate 20 spatially separates the modulated laser light using birefringence. When pixels are spatially separated by the birefringent plate, the pixel grid region is made smaller, the distribution of brightness on the screen is rendered uniform, and speckle noise is reduced.
    • 从激光光源1-3发出的红,绿,蓝激光由微透镜阵列7-9收集的准直透镜4-6转变成基本上平行的光束,由棒状积分器10-12呈现均匀。 用于照亮空间光调制元件16-18并进行调制。 从空间光调制元件16-18出射的调制激光使用光束组合棱镜19重新组合,并使用由双折射板旋转驱动单元26旋转驱动的双折射板20进行像素分离,之后将其 使用投影光学系统21投影在屏幕22上。双折射板20使用双折射空间分离调制的激光。 当通过双折射板在空间上分离像素时,像素网格区域变小,屏幕上的亮度分布变得均匀,并且斑点噪声降低。
    • 19. 发明申请
    • Projection type display apparatus, rear projection, and multi-vision system
    • 投影型显示装置,背投,多视觉系统
    • US20050206858A1
    • 2005-09-22
    • US11130901
    • 2005-05-17
    • Yoshimasa FushimiYoshihiro MasumotoMitsuhiro Wada
    • Yoshimasa FushimiYoshihiro MasumotoMitsuhiro Wada
    • G02B19/00G02B26/08H04N5/74G03B21/20
    • H04N9/3114G02B19/0028G02B19/0047G02B26/0841G03B21/20H04N5/7416H04N5/7458H04N9/3141
    • The present invention provides a small projection type display apparatus capable of suppressing an optical path of incident light and an optical path of output light in a reflection type light valve from being overlapped with each other and obtaining a projected image of high quality; a rear projector and a multi-vision system using the same. The projection type display apparatus is composed of an illumination optical system 2 for collecting light radiated from a light source 1 to form illumination light, a reflection type light valve 6 for reflecting the illumination light to output modulated light forming an optical image, a projection lens system 7 for projecting an optical image formed by the reflection type light valve, and a lens element 5 with a positive power. The lens element 5 is composed of one plano-convex lens, and is placed between the reflection type light valve and the projection lens system with a convex surface directed to the projection lens system, in such a manner that the illumination light passes through the lens element to illuminate the reflection type light valve, and the modulated light output from the reflection type light valve passes through the lens element to be incident upon the projection lens system.
    • 本发明提供一种能够抑制入射光的光路和反射型光阀中的输出光的光路彼此重叠并获得高品质的投影图像的小型投影型显示装置。 后投影机和使用其的多视觉系统。 投影型显示装置由用于收集从光源1照射的光以形成照明光的照明光学系统2,反射型光阀6,用于反射照明光以输出形成光学图像的调制光,投影透镜 用于投影由反射型光阀形成的光学图像的系统7和具有正光焦度的透镜元件5。 透镜元件5由一个平凸透镜构成,并且以照明光通过透镜的方式设置在反射型光阀和投影透镜系统之间,具有朝向投影透镜系统的凸表面 元件以照亮反射型光阀,并且从反射型光阀输出的调制光通过透镜元件入射到投影透镜系统。
    • 20. 发明授权
    • Projection lens assembly and projection display apparatus
    • 投影镜头组合和投影显示装置
    • US5539579A
    • 1996-07-23
    • US341885
    • 1994-11-15
    • Yoshito MiyatakeYuichi KimuraSinya SannoheYoshimasa Fushimi
    • Yoshito MiyatakeYuichi KimuraSinya SannoheYoshimasa Fushimi
    • G02B9/12G02B27/14G03B21/26
    • G02B13/22G02B13/04G02B9/12
    • An optical system of a projection display apparatus includes a projection lens assembly having a first lens group having a negative power, a second lens group having a negative power and a third lens group having a positive power, all arranged in this order from a side of a screen. An air space is provided between the first and second lens groups and also between the second and third lens groups. Each air space is longer than the entire length of the second lens group as taken along the optical axis of the assembly. The projection display apparatus has a light source for radiating rays of light including three primary color components, a color separating optical system for separating the radiation into three primary color components, first to third light valves each operable to receive the respective primary color components from the color separating optical system and to form an optical image having an optical characteristic varying as a function of a video signal, a color combining optical system for combining images of light emerging, respectively, from the light valves to provide a composite image. The projection lens assembly receives the image from the combining unit so as to project the optical images, formed on the respective light valves, onto a screen.
    • 投影型显示装置的光学系统包括投影透镜组件,该投影透镜组件具有负功率的第一透镜组,具有负光焦度的第二透镜组和具有正光焦度的第三透镜组,全部从 一个屏幕。 在第一透镜组和第二透镜组之间以及第二和第三透镜组之间设置空气空间。 每个空气空间比沿着组件的光轴截取的第二透镜组的整个长度长。 投影显示装置具有用于照射包括三原色成分的光线的光源,用于将辐射分离为三原色成分的分色光学系统,第一至第三光阀,其可操作以从所述基色接收各自的原色成分 并且形成具有作为视频信号的函数而变化的光学特性的光学图像;颜色组合光学系统,用于分别组合来自光阀的光的图像,以提供合成图像。 投影透镜组件从组合单元接收图像,以将形成在各个光阀上的光学图像投影到屏幕上。