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    Projection type display apparatus having air cooling arrangement
    2.
    发明授权
    Projection type display apparatus having air cooling arrangement 有权
    具有空气冷却装置的投射型显示装置

    公开(公告)号：US06481854B1

    公开(公告)日：2002-11-19

    申请号：US09452223

    申请日：1999-12-01

    申请人： Mari Sugawara ,  Tetsuya Hamada ,  Tetsuya Kobayashi ,  Toshihiro Suzuki ,  Takeshi Gotoh ,  Keiji Hayashi ,  Hisashi Yamaguchi ,  Noriyuki Ohashi

    发明人： Mari Sugawara ,  Tetsuya Hamada ,  Tetsuya Kobayashi ,  Toshihiro Suzuki ,  Takeshi Gotoh ,  Keiji Hayashi ,  Hisashi Yamaguchi ,  Noriyuki Ohashi

    IPC分类号： G03B2116

    CPC分类号： G02F1/133385 ,  G03B21/16

    摘要： The projection type display apparatus has liquid crystal panels with polarizers, a light source, a power supply, and a ballast. A cooling device is arranged in the apparatus such that a first set of cooling fans blow cooling air to cool the liquid crystal panels and the polarizers, and a second set of cooling fans suck the cooling air passing through the liquid crystal panels and the polarizers and blow the cooling air to independently cool the light source, the power supply, and the ballast. Therefore, a projection type display apparatus with little light leakage and low noise can be realized. The invention also provides a cooling unit, for the light source, which includes a movable lamp house and a duct with a cooling fan.

    摘要翻译： 该投影型显示装置具有带偏振器，光源，电源和镇流器的液晶面板。 冷却装置布置在设备中，使得第一组冷却风扇吹送冷却空气以冷却液晶面板和偏振器，第二组冷却风扇吸入通过液晶面板和偏振器的冷却空气， 吹冷却空气以独立冷却光源，电源和镇流器。 因此，能够实现漏电少，噪音低的投影型显示装置。 本发明还提供了一种用于光源的冷却单元，其包括可移动灯室和具有冷却风扇的管道。

    Luminaire with improved light utilization efficiency
    4.
    发明授权
    Luminaire with improved light utilization efficiency 有权
    灯具具有改善的光利用效率

    公开(公告)号：US06552760B1

    公开(公告)日：2003-04-22

    申请号：US09506267

    申请日：2000-02-17

    申请人： Takeshi Gotoh ,  Toshihiro Suzuki ,  Tetsuya Kobayashi ,  Tetsuya Hamada ,  Mari Sugawara ,  Keiji Hayashi ,  Noriyuki Ohashi ,  Hisashi Yamaguchi

    发明人： Takeshi Gotoh ,  Toshihiro Suzuki ,  Tetsuya Kobayashi ,  Tetsuya Hamada ,  Mari Sugawara ,  Keiji Hayashi ,  Noriyuki Ohashi ,  Hisashi Yamaguchi

    IPC分类号： G02F11333

    CPC分类号： G02B27/285 ,  H04N9/315

    摘要： A lens array 22C has convex lenses 221 and 221C arranged in alternate and staggering manner to one another. In combination with a condenser lens 23, the convex lenses 221 form images of respective convex lenses 211 of a lens array 21 on a plane 24 to be illuminated in overlapping so that an illuminance distribution on the plane 24 is almost uniform, while the convex lenses 221C whose focal length is longer than that of the convex lenses 211 make on the plane 24 an illuminance distribution of a mountain-shape. Flat plate portions and concave lenses may be employed instead of the convex lenses 221C. A polarization conversion element comprises two elements and an element disposed therebetween with its longitudinal direction being perpendicular to the two element. The images of a light emitting part are included in band-shaped useful incident areas. A polarization conversion section comprises a middle part which is thin but has a larger divergent angle and side parts each has a smaller divergent angle and a simpler construction but is thicker with its size larger.

    摘要翻译： 透镜阵列22C具有以彼此交替且交错的方式布置的凸透镜221和221C。 与聚光透镜23组合，凸透镜221在重叠的平面24上形成透镜阵列21的各凸透镜211的图像，使得平面24上的照度分布几乎均匀，而凸透镜 焦距长于凸透镜211的焦距的221C2在平面24上形成山形的照度分布。 可以使用平板部分和凹透镜来代替凸透镜221C。 偏振转换元件包括两个元件和设置在其间的元件，其纵向方向垂直于两个元件。 发光部的图像包括在带状有用入射区域中。 偏振转换部分包括薄而具有较大发散角的中间部分，并且侧部分别具有较小的发散角和更简单的结构，但是随着其尺寸较大而变厚。

    Lighting unit
    6.
    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

    申请人： Keiji Hayashi ,  Takeshi Gotoh ,  Toshihiro Suzuki ,  Hisashi Yamaguchi ,  Tetsuya Kobayashi ,  Tetsuya Hamada ,  Mari Sugawara

    发明人： Keiji Hayashi ,  Takeshi Gotoh ,  Toshihiro Suzuki ,  Hisashi Yamaguchi ,  Tetsuya Kobayashi ,  Tetsuya Hamada ,  Mari Sugawara

    IPC分类号： F21V8/00

    CPC分类号： G02B6/0031 ,  G01D11/28 ,  G02B6/0036 ,  G02B6/0061 ,  G02B6/0071 ,  G02F1/133604 ,  G02F1/133606 ,  G02F2202/28

    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。

    Lighting unit
    8.
    发明申请
    Lighting unit 有权
    照明单元

    公开(公告)号：US20050276072A1

    公开(公告)日：2005-12-15

    申请号：US10676315

    申请日：2003-10-01

    申请人： Keiji Hayashi ,  Takeshi Gotoh ,  Toshihiro Suzuki ,  Hisashi Yamaguchi ,  Tetsuya Kobayashi ,  Tetsuya Hamada ,  Mari Sugawara

    发明人： Keiji Hayashi ,  Takeshi Gotoh ,  Toshihiro Suzuki ,  Hisashi Yamaguchi ,  Tetsuya Kobayashi ,  Tetsuya Hamada ,  Mari Sugawara

    IPC分类号： F21V8/00 ,  G01D11/28 ,  G02F1/13357 ,  F21V7/04 ,  F21V29/00

    CPC分类号： G02B6/0031 ,  G01D11/28 ,  G02B6/0036 ,  G02B6/0061 ,  G02B6/0071 ,  G02F1/133604 ,  G02F1/133606 ,  G02F2202/28

    摘要： The invention relates to a backlight unit for liquid crystal displays, etc.; and its object is to provide a backlight unit not involving the problem that the emitted light leaks out of the optical waveguide, even when the space around the cold-cathode tubes in the light source unit for it is filled with a liquid of which the refractive index is nearly the same as that of the glass material that forms the outer wall of the cold-cathode tubes. The backlight unit comprises a housing 6 which houses cold-cathode tubes 2, 4 therein and of which the inner surface is coated with a light reflector 10; a transparent liquid filled in the housing 6; and an optical waveguide 1 made of a transparent substance and having a light-emitting surface S. The reflective surface of the light reflector 10 has a cross-section profile of X-T-U-V-W-Y, on which the light emitted by the cold-cathode tubes 2,4 is reflected, and the thus-reflected light is led to the light-emitting surface S of the optical waveguide 1 at an incident angle not smaller than the critical angle to the surface S.

    摘要翻译： 本发明涉及液晶显示器等的背光单元。 其目的是提供一种背光单元，其不涉及发射的光从光波导中泄漏的问题，即使在其光源单元中的冷阴极管周围的空间填充有折射的液体 指数与形成冷阴极管的外壁的玻璃材料的指数几乎相同。 背光单元包括壳体6，壳体6中容纳冷阴极管2,4，其内表面涂覆有光反射体10; 填充在壳体6中的透明液体; 以及由透明物质制成并具有发光表面S的光波导1.光反射器10的反射表面具有XTUVWY的横截面轮廓，其上由冷阴极管2,4发射的光 被反射，并且将如此反射的光以不小于与表面S的临界角的入射角度导向光波导1的发光表面S.

    Projection type display
    10.
    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

    申请人： Toshihiro Suzuki ,  Tetsuya Kobayashi ,  Tetsuya Hamada ,  Takeshi Gotoh ,  Mari Sugawara ,  Keiji Hayashi ,  Hisashi Yamaguchi

    发明人： Toshihiro Suzuki ,  Tetsuya Kobayashi ,  Tetsuya Hamada ,  Takeshi Gotoh ,  Mari Sugawara ,  Keiji Hayashi ,  Hisashi Yamaguchi

    IPC分类号： G03B2114

    CPC分类号： G03B21/14 ,  G03B21/2073 ,  G03B21/208 ,  G03B33/12

    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。