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    • 74. 发明授权
    • Image display apparatus and head mount display
    • 图像显示装置和头戴式显示器
    • US08116006B2
    • 2012-02-14
    • US12008480
    • 2008-01-11
    • Yoshie ShimizuYasushi TanijiriTakeshi EndoTetsuya Noda
    • Yoshie ShimizuYasushi TanijiriTakeshi EndoTetsuya Noda
    • G02B27/14G09G5/00
    • G02B27/0172G02B5/30G02B5/32G02B27/0103G02B2027/0112G02B2027/0174G02B2027/0178G03H2001/2231
    • The light directed from a light source to a concave mirror and the light directed from a display device to an eyepiece optical system are intersected by each other in a layout. This allows the light source, the concave mirror, and the display device to be arranged in compactness adjacent to the eyepiece optical system without increasing the optical power of an illumination optical system. As the result, the apparatus can easily be minimized in the thickness or the overall size. A hologram optical element is provided where the relationship between the wavelength range Δλ1 at half of the diffraction efficiency of each of the three primary colors of the light in the hologram optical element and the wavelength range Δλ2 at half of the intensity of each of the three primary colors of the light emitted from the light source is defined by Δλ1
    • 从光源引导到凹面镜的光和从显示装置指向目镜光学系统的光在布局中彼此相交。 这允许光源,凹面镜和显示装置在与目镜光学系统相邻的紧凑状态下布置,而不增加照明光学系统的光功率。 结果,该装置可以容易地在厚度或整体尺寸上最小化。 提供了一种全息光学元件,其中全息光学元件中的光的三原色中的每一种的衍射效率的一半的波长范围&Dgr;λ1与波长范围&Dgr;λ2之间的关系为强度的一半 从光源发射的光的三原色中的每一个由&Dgr;λ1<&Dgr;λ2定义。 因此,从光源发射的光的R,G和B颜色中的每一个的期望波长的分量可以通过全息光学元件的作用被衍射,然后被引导到观察者的瞳孔。 这允许在颜色再现区域中增加图像并且提高质量,而与时分模式下的显示装置无关。
    • 75. 发明授权
    • Hologram optical element, fabrication method thereof, and image display apparatus
    • 全息图光学元件及其制造方法以及图像显示装置
    • US07999982B2
    • 2011-08-16
    • US12126105
    • 2008-05-23
    • Takeshi EndoYoshie Shimizu
    • Takeshi EndoYoshie Shimizu
    • G03H1/00G02B5/32G09G5/00
    • G03H1/04G02B5/32G02B27/0103G02B27/1073G02B27/1086G02B2027/0109G02B2027/0123G03H2001/0439G03H2001/2231G03H2222/55
    • A volume-phase reflection hologram optical element is fabricated by exposing a hologram photosensitive material to two coherent light beams. One exposure light beam has an axis-asymmetric wavefront, and the other exposure light beam has focus points different in the optical axis direction (Z-direction) between on a plane (ZX-plane) including one of two directions (X- and Y-directions) mutually perpendicular on a sectional plane perpendicular to that light beam and on a plane (YZ-plane) including the other of those two directions. Thus, an image display apparatus is realized in which at the time of reproduction, the component of a predetermined wavelength of the image light diffraction-reflected by the hologram optical element is focused at positions different in the optical axis direction between on the ZX-plane and on the YZ-plane, offering different image viewing characteristics between in the X- and Y-directions.
    • 通过将全息图感光材料曝光于两个相干光束来制造体积相位反射全息光学元件。 一个曝光光束具有轴非对称波前,另一个曝光光束在包括两个方向之一的平面(ZX平面)上的光轴方向(Z方向)上具有不同的焦点(X和Y 二维)在垂直于该光束的截面上和在包括这两个方向中的另一个的平面(YZ-平面)上相互垂直。 因此,实现了一种图像显示装置,其中在再现时,由全息光学元件衍射反射的图像光的预定波长的分量被聚焦在Z轴平面上的光轴方向上不同的位置 并且在YZ平面上,在X和Y方向之间提供不同的图像观看特性。