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    • 71. 发明申请
    • Projector
    • 投影机
    • US20050078278A1
    • 2005-04-14
    • US10895339
    • 2004-07-21
    • Katsuyuki UeharaKazuhiro NishidaHirataka Yanagisawa
    • Katsuyuki UeharaKazuhiro NishidaHirataka Yanagisawa
    • G02B27/00G02B27/14G02B27/28H04N9/31G03B21/14
    • G02B27/286G02B27/1046G02B27/145G02B27/149G02B27/283H04N9/3105
    • Aspects of the invention can provide a projector capable of forming a projected image with an apparently seamless and smooth image quality in the stable state. As for the image light passed through a first unit, the polarization direction thereof can be appropriately rotated by a λ/2 phase plate, and a part of the image light can be split in the Y direction by a birefringent plate. When this is projected as it is, an image composed of a plurality of two dimensionally arranged pixels, pixels corresponding to the split image, and a black matrix area can be formed on a screen. As for the image light passed through a second unit, the polarization direction thereof can be appropriately rotated by a λ/2 phase plate, and a part of the image light can be split in the Y direction by a birefringent plate. Then, an image composed of the pixels in the previous stages, the pixels corresponding to the split images, and the black matrix area can be formed on the screen.
    • 本发明的各方面可以提供能够在稳定状态下形成具有明显无缝且平滑的图像质量的投影图像的投影仪。 对于通过第一单元的图像光,其偏振方向可以通过λ/ 2相位板适当地旋转,并且一部分图像光可以通过双折射板在Y方向上分离。 当这样投影时,可以在屏幕上形成由多个二维排列的像素组成的图像,与分割图像相对应的像素和黑矩阵区域。 对于通过第二单元的图像光,其偏振方向可以通过λ/ 2相位板适当地旋转,并且一部分图像光可以通过双折射板在Y方向上分割。 然后,可以在屏幕上形成由先前阶段中的像素组成的图像,与分割图像相对应的像素和黑矩阵区域。
    • 72. 发明申请
    • Illumination device and projector
    • 照明装置和投影机
    • US20050030749A1
    • 2005-02-10
    • US10853159
    • 2004-05-26
    • Kazuhiro NishidaAkira Momose
    • Kazuhiro NishidaAkira Momose
    • G02B5/00G02B27/28H04N9/31F21S2/00
    • H04N9/315G02B5/005G02B27/283G02B27/285
    • An illumination device includes: a light source; a polarization converter (114) that converts a light beam irradiated by the light source into a substantially uniform linear polarized light, the polarization converter (114) being slanted relative to a central axis of the light beam irradiated by the light source and including a plurality of polarization-separating films (1141) and a plurality of light reflection films (1143) alternately arranged in a direction substantially orthogonal to the central axis of the light beam irradiated by the light source; an optical filter (311) provided between the light source and the polarization converter (114) and having a plurality of optical conversion layers, which are formed striped with the pitch thereof corresponding to the arrangement of the polarization-separating films (1141) to optically convert the incident light beam; a holder frame (312) that holds the optical filter (311); and a filter-driving mechanism (313) that moves the holder frame (312) in a direction in which the polarization-separating films (1141) are arranged.
    • 照明装置包括:光源; 偏振转换器(114),其将由所述光源照射的光束转换成大致均匀的线偏振光,所述偏振转换器(114)相对于由所述光源照射的所述光束的中心轴倾斜并且包括多个 的偏振分离膜(1141)和沿与光源照射的光束的中心轴大致正交的方向交替排列的多个光反射膜(1143) 设置在光源和偏振转换器(114)之间并具有多个光学转换层的滤光器(311),其被形成为具有与偏振分离膜(1141)的布置对应的间距的光学条纹 转换入射光束; 保持框架(312),其保持所述滤光器(311); 和沿着偏振分离膜(1141)的排列方向移动保持框架(312)的过滤器驱动机构(313)。
    • 73. 发明授权
    • Projector
    • 投影机
    • US06443576B1
    • 2002-09-03
    • US09481441
    • 2000-01-13
    • Kazuhiro NishidaTomiyoshi Ushiyama
    • Kazuhiro NishidaTomiyoshi Ushiyama
    • G03B2128
    • G03B21/28
    • The invention achieves a reduction in size of a projector by shortening a length of an optical path of an illuminating optical system in a projector using an emitting direction control-type optical modulation device as compared to that of a conventional illuminating optical system, and thus, improves the illumination efficiencies of the illuminating optical system. An illuminating optical system includes a light source, a first lens array having a plurality of first small lenses for dividing light emitted from the light source into a plurality of partial light beam fluxes, and a second lens array having a plurality of second small lenses corresponding to the plurality of first small lenses. In addition, the illuminating optical system includes an optical element such that an outline shape of an emitting surface is a quadrilateral having first and second diagonal lines of different lengths. The quadrilateral of the optical element is set so that the ratio of two diagonal lines of a quadrilateral illumination region to which the illumination light is applied comes closer to 1 than the ratio of the lengths of the first and second diagonal lines.
    • 本发明通过使用发光方向控制型光调制装置与常规照明光学系统相比缩短投影仪中的照明光学系统的光路的长度来实现投影仪的尺寸的缩小, 提高照明光学系统的照明效率。 一种照明光学系统,包括光源,第一透镜阵列,具有多个第一小透镜,用于将从光源发射的光分成多个部分光束;以及第二透镜阵列,具有对应于多个第二小透镜的第二透镜阵列 到多个第一小透镜。 此外,照明光学系统包括光学元件,使得发射表面的轮廓形状是具有不同长度的第一和第二对角线的四边形。 光学元件的四边形被设定为使得施加照明光的四边形照明区域的两条对角线的比率比第一和第二对角线的长度的比例接近1。
    • 74. 发明申请
    • ELECTRO-OPTICAL DISPLAY DEVICE AND PROJECTOR
    • 电光显示设备和投影机
    • US20100309396A1
    • 2010-12-09
    • US12791249
    • 2010-06-01
    • Chiyoaki IIJIMAKazuhiro NishidaKatsumitsu Hama
    • Chiyoaki IIJIMAKazuhiro NishidaKatsumitsu Hama
    • G02F1/1335
    • G02F1/1333G02F2203/01G02F2203/60
    • An electro-optical display device includes: a transmission-type liquid crystal panel that has a driving substrate and an opposing substrate facing each other with a liquid crystal interposed therebetween; a first light-transmissive substrate that is disposed on an outer side of the driving substrate; and a second light-transmissive substrate that is disposed on an outer side of the opposing substrate, wherein any one or more values of thermal expansion coefficients of a plurality of element substrates including at least the driving substrate, the opposing substrate, the first light-transmissive substrate, and the second light-transmissive substrate are negative, and any one or more values of the thermal expansion coefficients of the plurality of element substrates are positive.
    • 电光显示装置包括:透射型液晶面板,其具有驱动基板和相对的基板,其间插入有液晶; 布置在所述驱动基板的外侧的第一透光性基板; 以及第二透光性基板,其设置在所述相对基板的外侧,其中,至少包括所述驱动基板,所述相对基板,所述第一发光元件的多个元件基板的热膨胀系数的一个以上的值, 透光性基板,第二透光性基板为负极,多个元件基板的热膨胀系数的一个或多个值为正。
    • 78. 发明授权
    • Projector
    • 投影机
    • US07636200B2
    • 2009-12-22
    • US11955060
    • 2007-12-12
    • Osamu IshibashiKazuhiro Nishida
    • Osamu IshibashiKazuhiro Nishida
    • G02B27/14
    • G02B27/149G02B27/1046G02B27/145G02B27/28H04N9/3105H04N9/3152
    • To provide a projector capable of increasing F number of an illumination system without enlarging the size of the illumination system or the like.A combining lens 43a operating in cooperation with a superimposing lens 35 is provided only in a first section between a first dichroic mirror 41a and a red light reflection mirror 42a as a bending mirror on a first optical path OP1 extending from the superimposing lens 35 to a first liquid crystal display panel 61r. Thus, the F number of an illumination system 30 associated with blue light can be controlled with high degree of freedom, and the number of lenses constituting a color separation and light guide system 40 and the illumination system 30 does not increase. Moreover, the incident angle of illumination light does not become large around the first liquid crystal display panel 61r, and thus the telecentric characteristics of the illumination system 30 associated with blue light can be secured.
    • 提供能够增加照明系统的F数量而不扩大照明系统等的尺寸的投影仪。 与重叠透镜35配合操作的组合透镜43a仅在从重叠透镜35延伸到第一光路OP1的第一分光镜41a和红光反射镜42a之间的第一部分中作为弯曲反射镜设置在第一光路OP1上 第一液晶显示面板61r。 因此,能够以高自由度来控制与蓝光相关联的照明系统30的F数,并且构成分色导光系统40和照明系统30的透镜的数量不增加。 而且,第一液晶显示面板61r周围的照明光的入射角也不会变大,能够确保与蓝光相关的照明系统30的远心特性。