Projector
    71.
    发明授权
    Projector 失效
    投影机

    公开(公告)号:US6157419A

    公开(公告)日:2000-12-05

    申请号:US766647

    申请日:1996-12-13

    申请人: Hideaki Mitsutake

    发明人: Hideaki Mitsutake

    摘要: In a projector, wherein the polarized states of a plurality of color lights illuminating image forming means differ from the polarized states of image lights projected onto a projection surface and the image lights of respective colors projected onto the projection surface have a common polarized state, means for varying the polarized state is disposed in the optical path of each of the color lights.

    摘要翻译: 在投影仪中,多个彩色光照射图像形成装置的偏振状态与投射到投影面上的图像光的偏振状态不同,投影在投影面上的各种颜色的图像光具有共同的偏振态, 用于改变极化状态的光束设置在每个彩色光的光路中。

    Image-forming apparatus and method of driving the same
    72.
    发明授权
    Image-forming apparatus and method of driving the same 失效
    图像形成装置及其驱动方法

    公开(公告)号:US6005540A

    公开(公告)日:1999-12-21

    申请号:US944556

    申请日:1997-10-07

    摘要: A plurality of electron-emitting devices carried on a device substrate are arranged vis-a-vis an acceleration electrode carried on a face plate. The device substrate and the face plate, together with side walls disposed therebetween, constitute an envelope the inner space of which is kept under vacuum. A number of spacers are also disposed between the device substrate and the face plate within the inner space. The electric potential V.sub.a applied to the acceleration electrode, the distance l between the electron-emitting devices and the corresponding respective spacers, and the distance d between the electron-emitting devices and the acceleration electrode satisfy the relationship, V.sub.a .multidot.l.sup.2 /d.sup.2 >.vertline..DELTA.V.sub.sat .vertline./(2.multidot..alpha..multidot..beta.), where .alpha. and .beta. are constants determined from several factors and .DELTA.V.sub.sat is the potential deviation of the spacer surface under charged conditions from that under uncharged conditions.

    摘要翻译: 携带在器件基板上的多个电子发射器件相对于承载在面板上的加速电极被布置。 装置基板和面板以及设置在其间的侧壁构成其内部空间保持在真空下的外壳。 多个间隔物也设置在内部空间内的装置基板和面板之间。 施加到加速电极的电位Va,电子发射器件和相应的各个间隔物之间​​的距离l以及电子发射器件和加速电极之间的距离d满足关系式Vax1 / d2> DELTA Vsat | /(2xαxβ),其中α和β是由几个因子确定的常数,并且DELTA Vsat是在充电条件下间隔物表面与不带电条件下的潜在偏差。

    Illuminating optical system and projector utilizing the same
    74.
    发明授权
    Illuminating optical system and projector utilizing the same 失效
    照明光学系统和使用其的投影仪

    公开(公告)号:US5833341A

    公开(公告)日:1998-11-10

    申请号:US453441

    申请日:1995-05-30

    摘要: This invention provides a projector capable of effectively utilizing the light from the light source and significantly reducing the light illuminating the outside of the area to be illuminated, thereby attaining an excellent efficiency of light utilization. In the illuminating system of the present invention provided with a light source and a reflector, there is further provided a circular reflector of a spherical surface, for returning the light, which emerges from the light source to the outside of the area to be illuminated, without being reflected on the reflector, to the light source. Also there is provided a flat mirror or a substantially spherical sub reflector for returning the light, which proceeds to the outside of the area to be illuminated, after being reflected on the reflector, to the light source. The sub reflector may be provided in the vicinity of the light source.

    摘要翻译: 本发明提供一种能够有效地利用来自光源的光并且显着地减少照亮被照射区域的外部的光的投影仪,从而获得优异的光利用效率。 在设置有光源和反射器的本发明的照明系统中,还设置有球面的圆形反射器,用于将从光源出射的光返回到被照射区域的外部, 而不在反射器上反射到光源。 还提供了一种平面镜或基本上球形的副反射器,用于使在光反射器被反射之后进入待照亮区域的外部的光返回到光源。 副反射器可以设置在光源附近。

    Optical modulation device having different pretilts in the compensation
cell(s)
    77.
    发明授权
    Optical modulation device having different pretilts in the compensation cell(s) 失效
    在补偿电池中具有不同预浸料的光调制装置

    公开(公告)号:US5615025A

    公开(公告)日:1997-03-25

    申请号:US358992

    申请日:1994-12-19

    摘要: The present invention relates to an optical modulation device that maintains good contrast despite changes in temperature and is capable of performing stable display. A polarizer, a first and second modulator and an analyzer are provided. Each modulator is a chiral smectic liquid crystal layer held between two opposite substrates which have different orientation determining abilities. The chiral smectic liquid crystal layers have at least two stable alignment states and substantially the same temperature dependency and tilt angle. The molecular axis of the first modulator at one of the two stable alignment states is substantially parallel to a transmitting modulation axis of said polarizer and is substantially perpendicular to a transmitting polarizing axis of said analyzer, and a molecular axis at one of the two stable alignment states of said second modulator is substantially parallel to a transmitting polarization axis of said analyzer.

    摘要翻译: 本发明涉及尽管温度变化而保持良好的对比度并且能够执行稳定显示的光学调制装置。 提供偏振器,第一和第二调制器和分析器。 每个调制器是保持在具有不同取向决定能力的两个相对基板之间的手性近晶液晶层。 手性近晶液晶层具有至少两个稳定的取向状态和基本相同的温度依赖性和倾斜角。 在两个稳定取向状态中的一个处的第一调制器的分子轴基本上平行于所述偏振器的透射调制轴,并且基本上垂直于所述分析器的透射偏振轴,并且在两个稳定对准中的一个处的分子轴 所述第二调制器的状态基本上平行于所述分析器的透射偏振轴。

    Polarization converting device and polarized-light illuminating system
using the device and image display unit using the device
    78.
    发明授权
    Polarization converting device and polarized-light illuminating system using the device and image display unit using the device 失效
    使用该装置的装置和图像显示装置的极化转换装置和偏振光照明系统

    公开(公告)号:US5387991A

    公开(公告)日:1995-02-07

    申请号:US988018

    申请日:1992-12-09

    摘要: A polarization converting device for converting a light from a light source into a polarized light comprises a first prism having a first slant plane for receiving the light from the light source and dividing it into first and second lights with their polarized planes orthogonal, a first emergent surface from which the first light exits, and a second emergent surface from which the second light exits, a second prism having an incident surface opposed to the second emergent surface of the first prism, a second slant plane for reflecting and deflecting the second light from the incident surface so as to direct it to an optical path almost parallel to that of the first light, and a third emergent surface from which the second light reflected from the second slant plane exits, and a transparent layer carried between the second emergent surface of the first prism and the incident surface of the second prism, the transparent layer having a smaller refractive index than the first prism.

    摘要翻译: 一种用于将来自光源的光转换成偏振光的偏振转换装置包括具有第一倾斜平面的第一棱镜,用于接收来自光源的光并将其分为第一和第二光,其偏振面正交,第一出射 第一光出射的表面和第二光出射的第二出射表面,具有与第一棱镜的第二出射表面相对的入射表面的第二棱镜,用于反射和偏转第二光的第二倾斜平面 所述入射表面以将其引导到几乎平行于所述第一光的光路;以及第三出射表面,从所述第二倾斜平面反射的所述第二光从所述第三出射表面出射;以及透明层,承载在所述第二出射表面 所述第一棱镜和所述第二棱镜的入射表面,所述透明层具有比所述第一棱镜更小的折射率。

    Polarization conversion unit, polarization illumination apparatus
provided with the unit, and projector provided with the apparatus
    79.
    发明授权
    Polarization conversion unit, polarization illumination apparatus provided with the unit, and projector provided with the apparatus 失效
    设置有该单元的极化转换单元,偏振照明装置以及配备有该装置的投影仪

    公开(公告)号:US5381278A

    公开(公告)日:1995-01-10

    申请号:US146801

    申请日:1993-11-01

    摘要: A polarization conversion unit is disclosed. In the unit, a definitely polarized light emitted from a light source is divided into a pair of lights differing in polarized state and are caused to be incident on the optical components including the polarizing beam splitter. The plane of polarization of one of the paired polarized light is rotated to be coincident with the plane of polarization of the other light by the optical components, so that the paired lights with the same plane of polarization are caused to be separately emitted. The optical component has a plano-convex lens which has a positive power and which is arranged at an exit side where the paired lights are separately emitted. The lens has a focal point at a position further than the position of the surface to be illuminated.

    摘要翻译: 公开了一种偏振转换单元。 在该单元中,从光源发射的绝对偏振光被分为一对不同偏振状态的光,并且被引入到包括偏振分束器的光学部件上。 使一对偏振光中的一个偏振光的平面旋转成与光学部件的另一个光的偏振面一致,从而使具有相同的偏振面的成对的光分别发射。 光学部件具有平面凸透镜,该平凸透镜具有正的光焦度,并且布置在分开发射配对的光的出射侧。 透镜在比要被照射的表面的位置更远的位置处具有焦点。

    Screen and projector using said screen
    80.
    发明授权
    Screen and projector using said screen 失效
    屏幕和投影机使用所述屏幕

    公开(公告)号:US5241416A

    公开(公告)日:1993-08-31

    申请号:US960223

    申请日:1992-10-13

    IPC分类号: G03B21/62

    CPC分类号: G03B21/625

    摘要: A screen is constituted of a sheet having a first lens array, and a second lens array formed in the interior of said sheet, wherein each lens of said second lens array is arranged in correspondence with each lens of said first lens array.

    摘要翻译: 屏幕由具有第一透镜阵列的片材和形成在所述片材的内部的第二透镜阵列构成,其中所述第二透镜阵列的每个透镜与所述第一透镜阵列的每个透镜相对应地布置。