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    • 73. 发明授权
    • Image projection apparatus and image projection system
    • 图像投影装置和图像投影系统
    • US07213924B2
    • 2007-05-08
    • US10945765
    • 2004-09-21
    • Atsushi OkuyamaMasayuki Abe
    • Atsushi OkuyamaMasayuki Abe
    • G03B21/14G02F1/01G02B5/30
    • G03B33/12G03B21/006
    • The image projection apparatus includes a first, a second and a third reflective liquid crystal display element, an illumination optical system which color-separates light from a light source into first, second and third color light component and illuminating the three reflective liquid crystal display elements with the respective color light components, a projection optical system combining the color light components emerged from the three reflective liquid crystal display elements and projecting the combined color light components onto a projection surface, and an incidence side polarizing plate arranged between the light source and at least one of the three reflective liquid crystal display elements. An average value of a transmittance, in a wavelength region of 450 nm to 630 nm, of the incidence side polarizing plate for light of a polarization direction to be blocked thereby is 5% or less.
    • 图像投影装置包括第一反射型液晶显示元件和第三反射型液晶显示元件,将来自光源的光分色为第一,第二及第三颜色的光分量,照射三个反射型液晶显示元件的照明光学系统 与各个彩色光分量组合的投影光学系统,组合从三个反射型液晶显示元件出射的彩色光成分并将组合的彩色光分量投影到投影表面上,并且入射侧偏振片配置在光源和 三个反射液晶显示元件中的至少一个。 在偏光方向的光的入射侧偏振片的波长450nm〜630nm的波长区域的透射率的平均值为5%以下。
    • 77. 发明申请
    • Image projection apparatus and image projection system
    • 图像投影装置和图像投影系统
    • US20050062936A1
    • 2005-03-24
    • US10945765
    • 2004-09-21
    • Atsushi OkuyamaMasayuki Abe
    • Atsushi OkuyamaMasayuki Abe
    • G02F1/13G02B27/10G02B27/18G02B27/28G02F1/1335G03B21/00G03B21/14
    • G03B33/12G03B21/006
    • The image projection apparatus includes a first, a second and a third reflective liquid crystal display element, an illumination optical system which color-separates light from a light source into first, second and third color light component and illuminating the three reflective liquid crystal display elements with the respective color light components, a projection optical system combining the color light components emerged from the three reflective liquid crystal display elements and projecting the combined color light components onto a projection surface, and an incidence side polarizing plate arranged between the light source and at least one of the three reflective liquid crystal display elements. An average value of a transmittance, in a wavelength region of 450 nm to 630 nm, of the incidence side polarizing plate for light of a polarization direction to be blocked thereby is 5% or less.
    • 图像投影装置包括第一反射型液晶显示元件和第三反射型液晶显示元件,将来自光源的光分色为第一,第二和第三色光分量,照射三个反射型液晶显示元件的照明光学系统 与各个彩色光分量组合的投影光学系统,组合从三个反射型液晶显示元件出射的彩色光成分并将组合的彩色光分量投影到投影表面上,并且入射侧偏振片配置在光源和 三个反射液晶显示元件中的至少一个。 在偏光方向的光的入射侧偏振片的波长450nm〜630nm的波长区域的透射率的平均值为5%以下。
    • 78. 发明授权
    • Device and method for measuring the properties of a magnetic reproducing head
    • 用于测量磁性再现头的特性的装置和方法
    • US06774626B2
    • 2004-08-10
    • US09835547
    • 2001-04-17
    • Masayuki Abe
    • Masayuki Abe
    • G01R3312
    • G11B5/455G11B2005/0016
    • A device for measuring a magnetic property of a magnetic reproducing head at a measurement point thereon, the device which applies a first magnetic field which oscillates at a predetermined oscillation frequency to the measurement point, applies a second magnetic field of which strength changes slower compared with the oscillation frequency of the first magnetic field to the measurement point, detects a signal generated by the magnetic reproducing head according to the total strength of the first magnetic field and the second magnetic field, extracts amplitude components synchronizing with the oscillation frequency from the signal, and calculates changes of the signal against the total magnetic field strength based on the extracted amplitude components.
    • 一种用于测量其上的测量点的磁性再现头的磁特性的装置,将以预定振荡频率振荡的第一磁场施加到测量点的装置,施加与第二磁场相比强度变化较慢的第二磁场, 第一磁场对测量点的振荡频率根据第一磁场和第二磁场的总强度检测由磁再现磁头产生的信号,从信号中提取与振荡频率同步的振幅分量, 并基于所提取的振幅分量来计算信号对总磁场强度的变化。