Projector with plastic mirror
    2.
    发明授权
    Projector with plastic mirror 失效
    投影机与塑料镜

    公开(公告)号:US5506642A

    公开(公告)日:1996-04-09

    申请号:US360152

    申请日:1994-12-20

    IPC分类号: H04N5/74 H04N9/31 G03B21/28

    CPC分类号: H04N9/3105 H04N5/7408

    摘要: A projector comprising liquid crystal display panels and a projection lens for projecting the modulated light to a screen. A back surface reflection mirror including a transparent plastic sheet and a reflecting film is arranged between the projection lens and the screen. The mirror is thin and light and may have optical anisotropy. In order to eliminate an uneven pattern appearing in the screen caused by optical isotropy of the mirror and the difference between the light distribution characteristics in the screen for P- and S-polarized light, the projection lens and the back surface reflection mirror are arranged in such a relationship that a wave normal vector of an arbitrary component of the light projected by the projection lens and made incident to the back surface reflection mirror is not parallel to the optical axis of the plastic sheet.

    摘要翻译: 一种投影仪,包括液晶显示面板和用于将调制光投影到屏幕的投影透镜。 包括透明塑料片和反射膜的背面反射镜布置在投影透镜和屏幕之间。 镜子薄而轻,可能具有光学各向异性。 为了消除由于镜的光学各向同性引起的屏幕出现的不均匀图案以及用于P偏振光和S偏振光的屏幕中的光分布特性之间的差异,投影透镜和背面反射镜被布置在 由投影透镜投影并入射到后表面反射镜的光的任意分量的波形法线向量与塑料片的光轴不平行的关系。

    Screen and production display apparatus using the same
    3.
    发明授权
    Screen and production display apparatus using the same 失效
    使用其的屏幕投影显示装置

    公开(公告)号:US06392726B2

    公开(公告)日:2002-05-21

    申请号:US08942567

    申请日:1997-10-01

    IPC分类号: G02F11333

    摘要: A screen has a screen main body, a power supply and a voltage regulator. The screen main body has a Fresnel lens, a polymer dispersed liquid crystal unit and a lenticular lens. The liquid crystal unit includes a polymer dispersed liquid crystal and a pair of transparent electrodes which sandwich the polymer dispersed liquid crystal. By operating the voltage regulator, a voltage applied to the electrodes is adjusted so that a gain of the liquid crystal is controlled.

    摘要翻译: 屏幕具有屏幕主体,电源和电压调节器。 屏幕主体具有菲涅尔透镜,聚合物分散液晶单元和双凸透镜。 液晶单元包括聚合物分散液晶和夹着聚合物分散液晶的一对透明电极。 通过操作电压调节器,调节施加到电极的电压,从而控制液晶的增益。

    Projection type display
    7.
    发明授权
    Projection type display 有权
    投影型显示

    公开(公告)号:US06379010B1

    公开(公告)日:2002-04-30

    申请号:US09280444

    申请日:1999-03-29

    IPC分类号: G03B2114

    摘要: The present invention relates to a projection type display using a transmission type liquid crystal light valve, and its object is to supply a projection type display capable of exhibiting a high quality gradation display by preventing a leak current at a switching device. The projection type display comprises three liquid crystal light valves 21R, 21G, and 21B which have polarizing plates 20Rp, 20Gp, and 20Bp, modulate in intensity and emit each light of color components of red, green, and blue, and a dichroic prism to synthesize exiting lights from respective light valves. The projection type display is structured to arrange half-wave plates 20Ri, and 20Gi between the liquid crystal light valves 21R, and 21G for red and green, to set a polarizing direction of an exiting light of a blue component orthogonal to polarizing directions of the other two exiting lights.

    摘要翻译: 本发明涉及一种使用透射型液晶光阀的投影型显示器,其目的是提供一种能够通过防止开关装置的泄漏电流而呈现高质量灰度显示的投影型显示器。 投影型显示器包括具有调制强度的偏振片20Rp,20Gp和20Bp的三个液晶光阀21R,21G和21B,并将每个红色,绿色和蓝色的颜色分量的光和二向色棱镜发射到 从各个光阀合成出射光。 投影型显示器被构造成在用于红色和绿色的液晶光阀21R和21G之间布置半波片20Ri和20Gi,以将与蓝色分量正交的蓝色分量的出射光正交于偏振方向的偏振方向 其他两个出口灯。

    Lighting unit
    9.
    发明授权
    Lighting unit 有权
    照明单元

    公开(公告)号:US07494259B2

    公开(公告)日:2009-02-24

    申请号:US10676315

    申请日:2003-10-01

    IPC分类号: F21V8/00

    摘要: A lighting unit including a light-reflecting reflector, a plurality of cold cathode tubes disposed inside the reflector and an optical waveguide connected with an open end of the reflector to guide the light emitted by the cold-cathode tubes. The reflector has a reflective surface that reflects the light having been emitted by the cold-cathode tubes in the direction nearly perpendicular to the wall of each tube, and only in a direction in which the light reflected does not re-enter the cold-cathode tubes. In another embodiment, the lighting unit may include a second optical waveguide disposed in the space between the cold-cathode tube and the reflector, wherein a space is formed between the cold-cathode tube and the second optical waveguide.

    摘要翻译: 一种照明单元,包括光反射器,设置在反射器内部的多个冷阴极管和与反射器的开口端连接以引导由冷阴极管发射的光的光波导。 反射器具有反射表面,该反射表面反射已经由冷阴极管发射的光在几乎垂直于每个管的壁的方向上,并且仅在所反射的光不再进入冷阴极的方向上 管。 在另一个实施例中,照明单元可以包括设置在冷阴极管和反射器之间的空间中的第二光波导,其中在冷阴极管和第二光波导之间形成空间。