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    Optical unit, video display apparatus, and color switching method
    1.
    发明申请
    Optical unit, video display apparatus, and color switching method 有权
    光学单元，视频显示设备和颜色切换方法

    公开(公告)号：US20080278636A1

    公开(公告)日：2008-11-13

    申请号：US12216846

    申请日：2008-07-11

    申请人： Satoshi Ouchi ,  Taro Imahase ,  Nobuaki Kabuto

    发明人： Satoshi Ouchi ,  Taro Imahase ,  Nobuaki Kabuto

    IPC分类号： H04N9/31

    CPC分类号： G02B27/283 ,  G03B21/006 ,  G03B21/2073 ,  G03B33/08 ,  H04N9/3117

    摘要： A projection-type video display apparatus has a polarizing beam splitter for matching light, which is outputted by a light source unit, to one of S polarizing light and P polarizing light, an optical characteristics switching element for electrically and periodically switching a wavelength band of light outputted by the polarizing beam splitter, a video display element, as a light valve element, for forming an optical image from light outputted by the light source unit, in accordance with a video signal, and a radiating unit for radiating a plurality of color light, which are sequentially outputted by the optical characteristics switching element, to the video display element, wherein light outputted by the video display element is incident on a projecting lens, and a light path from the light source unit to the projecting lens is U-shaped. Consequently, the projection-type video display apparatus becomes compact and has improved contrast.

    摘要翻译： 一种投射式视频显示装置，具有将由光源单元输出的光与S偏振光和P偏振光中的一种进行匹配的偏振光束分离器，用于电性地且周期性地切换波长带的光学特性切换元件 由偏振分束器输出的光，作为光阀元件的视频显示元件，用于根据视频信号从光源单元输出的光形成光学图像;以及辐射单元，用于发射多种颜色 由光学特性切换元件依次输出的光被照射到视频显示元件，其中由视频显示元件输出的光入射到投影透镜上，并且从光源单元到投影透镜的光路为U形， 成形。 因此，投影型视频显示装置变得紧凑并且具有改善的对比度。

    Display system and lighting device used therein
    2.
    发明申请
    Display system and lighting device used therein 审中-公开
    其中使用的显示系统和照明装置

    公开(公告)号：US20060139954A1

    公开(公告)日：2006-06-29

    申请号：US11210108

    申请日：2005-08-24

    申请人： Tomoki Kobori ,  Satoshi Ouchi ,  Taro Imahase ,  Atsushi Maruyama

    发明人： Tomoki Kobori ,  Satoshi Ouchi ,  Taro Imahase ,  Atsushi Maruyama

    IPC分类号： F21V7/04

    CPC分类号： H05B33/0818 ,  H05B33/0866 ,  H05B33/0869 ,  Y02B20/346

    摘要： In a drive circuit of light emission device arrays each having at least one light emission device, at least one of the light emission diode arrays is pulse-driven with a pulse of phase different from the other light emission device arrays. While the at least one light emission device array driven with a different phase is OFF, a processing circuit acquires the luminiferous level of each of the other light emission device arrays by using the at least one light emission device array which is OFF as a light reception device. Furthermore, a control circuit controls the drive level of the drive circuit for the light emission device arrays which are ON.

    摘要翻译： 在每个具有至少一个发光器件的发光器件阵列的驱动电路中，发光二极管阵列中的至少一个以与其它发光器件阵列不同的相位脉冲进行脉冲驱动。 虽然以不同相位驱动的至少一个发光器件阵列为OFF，但是处理电路通过使用至少一个OFF的发光器件阵列作为光接收来获取每个其它发光器件阵列的发光电平 设备。 此外，控制电路控制导通的发光器件阵列的驱动电路的驱动电平。

    Projection type image display apparatus
    3.
    发明授权
    Projection type image display apparatus 失效
    投影型图像显示装置

    公开(公告)号：US07066600B2

    公开(公告)日：2006-06-27

    申请号：US11150297

    申请日：2005-06-13

    申请人： Tsutomu Nakashima ,  Satoshi Ouchi ,  Taro Imahase ,  Tomohiro Miyoshi

    发明人： Tsutomu Nakashima ,  Satoshi Ouchi ,  Taro Imahase ,  Tomohiro Miyoshi

    IPC分类号： G03B21/14 ,  G02F1/1335 ,  G02B5/30

    CPC分类号： G03B21/16 ,  G03B21/208 ,  G03B33/12

    摘要： Disclosed is a compact, light, inexpensive reflection type liquid crystal projector optical unit or reflection type liquid crystal projector which provides high brightness without contrast deterioration caused by light leakage associated with black image display. The unit or projector uses, as a polarizer/analyzer for a reflection liquid crystal panel, a reflection polarizing plate which functions as a polarizing plate by its grating function only in a specific direction. It also uses an auxiliary polarizer and an absorption auxiliary analyzer. Their reflection axis or absorption axis is adjusted according to the characteristic of the reflection liquid crystal panel so as to minimize light leakage associated with black image display.

    摘要翻译： 公开了一种紧凑，轻便，廉价的反射型液晶投影仪光学单元或反射型液晶投影仪，其提供高亮度而没有由与黑色图像显示相关联的光泄漏引起的对比度劣化。 该单元或投影仪用作反射型液晶面板的偏振器/分析器，仅通过其光栅功能仅在特定方向上起到偏振片的反射偏振片的作用。 它还使用辅助偏振器和吸收辅助分析仪。 根据反射液晶面板的特性调整反射轴或吸收轴，以使与黑色图像显示相关联的光泄漏最小化。

    Projection type image display apparatus
    4.
    发明授权
    Projection type image display apparatus 失效
    投影型图像显示装置

    公开(公告)号：US06893131B2

    公开(公告)日：2005-05-17

    申请号：US10648788

    申请日：2003-08-27

    申请人： Taro Imahase ,  Satoshi Ouchi ,  Tsutomu Nakashima

    发明人： Taro Imahase ,  Satoshi Ouchi ,  Tsutomu Nakashima

    IPC分类号： G02B5/30 ,  G02B27/28 ,  G02F1/13 ,  G02F1/1335 ,  G03B21/00 ,  G03B21/16 ,  H04N9/31 ,  G03B21/14 ,  G03B21/26 ,  G03B21/28

    CPC分类号： H04N9/3105 ,  G03B21/16 ,  G03B21/2073 ,  G03B33/12 ,  H04N9/3167

    摘要： A compact, light projection type image display apparatus based on reflection image display devices which provide high brightness without contrast deterioration caused by light leakage associated with black image display. The apparatus uses, as polarizers/analyzers for reflection image display devices, reflection polarizing plates which function as polarizing plates by their grating function only in a specific direction. In each light path, the reflection polarizing plate is located just before/after the reflection image display device.

    摘要翻译： 一种基于反射图像显示装置的紧凑型光投射型图像显示装置，其提供高亮度而没有由与黑色图像显示相关联的光泄漏引起的对比度劣化。 该装置作为反射图像显示装置的偏振器/分析器，仅通过其特定方向的光栅功能作为偏振片起反射偏振片的作用。 在每个光路中，反射偏振片位于反射图像显示装置之前/之后。

    Image display device
    7.
    发明授权
    Image display device 有权
    图像显示装置

    公开(公告)号：US07553024B2

    公开(公告)日：2009-06-30

    申请号：US11401922

    申请日：2006-04-12

    申请人： Satoshi Ouchi ,  Taro Imahase ,  Tomohiro Miyoshi ,  Fukuyasu Abe

    发明人： Satoshi Ouchi ,  Taro Imahase ,  Tomohiro Miyoshi ,  Fukuyasu Abe

    IPC分类号： G03B21/14

    CPC分类号： G03B33/12 ,  G02B27/1026 ,  G02B27/1073 ,  G02B27/14 ,  G02B27/145 ,  G02B27/283 ,  G03B21/006 ,  G03B21/10 ,  G03B21/14 ,  G03B21/2066 ,  G03B21/2073 ,  H04N5/7441 ,  H04N9/3105 ,  H04N9/3167

    摘要： An image display device includes a light source which outputs a first light including a first color light, a second color light and a third color light, a polarity converter which unifies polarities of the first light into a single polarity, a dichroic mirror which separates the first color light from the first light which is output by the polarity converter, and first to third reflective liquid crystal display elements, respectively, installed for the first to third color lights. First to third polarized beam splitters are provided together with first and second wavelength selective polarity rotator elements. A projection lens is provided so as to project a light combined by the third polarized beam splitter, and the first color light, which is reflected by the first reflective liquid crystal display element, permeates the first polarized beam splitter and the third polarized beam splitter.

    摘要翻译： 图像显示装置包括输出包括第一颜色光，第二彩色光和第三颜色光的第一光的光源，将第一光的极性统一为单极性的极性转换器，分离第二光的二向色镜 由极性转换器输出的第一光的第一色光以及分别安装在第一至第三色光的第一至第三反射型液晶显示元件。 第一至第三偏振分束器与第一和第二波长选择性极性旋转元件一起设置。 投影透镜设置成投射由第三偏振分束器组合的光，并且由第一反射型液晶显示元件反射的第一色光透过第一偏振光束分离器和第三偏振分束器。

    Projection type image display apparatus
    10.
    发明申请
    Projection type image display apparatus 失效
    投影型图像显示装置

    公开(公告)号：US20050237489A1

    公开(公告)日：2005-10-27

    申请号：US11150297

    申请日：2005-06-13

    申请人： Tsutomu Nakashima ,  Satoshi Ouchi ,  Taro Imahase ,  Tomohiro Miyoshi

    发明人： Tsutomu Nakashima ,  Satoshi Ouchi ,  Taro Imahase ,  Tomohiro Miyoshi

    IPC分类号： G02F1/13 ,  G02B21/00 ,  G02B27/28 ,  G02F1/13357 ,  G03B21/00 ,  G03B21/16 ,  H04N5/74 ,  H04N9/31 ,  G03B21/14

    CPC分类号： G03B21/16 ,  G03B21/208 ,  G03B33/12

    摘要： Disclosed is a compact, light, inexpensive reflection type liquid crystal projector optical unit or reflection type liquid crystal projector which provides high brightness without contrast deterioration caused by light leakage associated with black image display. The unit or projector uses, as a polarizer/analyzer for a reflection liquid crystal panel, a reflection polarizing plate which functions as a polarizing plate by its grating function only in a specific direction. It also uses an auxiliary polarizer and an absorption auxiliary analyzer. Their reflection axis or absorption axis is adjusted according to the characteristic of the reflection liquid crystal panel so as to minimize light leakage associated with black image display.

    摘要翻译： 公开了一种紧凑，轻便，廉价的反射型液晶投影仪光学单元或反射型液晶投影仪，其提供高亮度而没有由与黑色图像显示相关联的光泄漏引起的对比度劣化。 该单元或投影仪用作反射型液晶面板的偏振器/分析器，仅通过其光栅功能仅在特定方向上起到偏振片的反射偏振片的作用。 它还使用辅助偏振器和吸收辅助分析仪。 根据反射液晶面板的特性调整反射轴或吸收轴，以使与黑色图像显示相关联的光泄漏最小化。