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    • 4. 发明授权
    • Image display apparatus
    • 图像显示装置
    • US07233422B2
    • 2007-06-19
    • US10602289
    • 2003-06-24
    • Takeshi EndoTetsuya NodaYasushi Tanijiri
    • Takeshi EndoTetsuya NodaYasushi Tanijiri
    • G02B5/32
    • G02B27/0172G02B5/32G02B2027/0123G02B2027/0132G02B2027/0174G02B2027/0178
    • An image display apparatus has: a display element for displaying an image; a light source section for supplying an illumination light to the display element; a reflection type hologram for diffracting and reflecting the illumination light so as to guide the illumination light to the display element; and an eyepiece optical system for guiding an image light from the display element to an eye of a viewer so as to provide an enlarged virtual image of the image. The reflection type hologram has diffusing properties. Since the reflection type hologram diffuses the illumination light, an incident angle of the illumination light with respect to the display element is widened to a certain extent. Since the display element does not change a propagating direction of a light ray, a propagating direction of the image light is widened similarly to widening of the incident angle, thereby enlarging the observation pupil.
    • 图像显示装置具有:显示图像的显示元件; 用于向显示元件提供照明光的光源部; 用于衍射和反射照明光以将照明光引导到显示元件的反射型全息图; 以及用于将来自显示元件的图像光引导到观看者的眼睛的目镜光学系统,以便提供图像的放大的虚像。 反射型全息图具有扩散性。 由于反射型全息图漫射照明光,照明光相对于显示元件的入射角度被扩大到一定程度。 由于显示元件不改变光线的传播方向,所以与入射角度的加宽类似,图像光的传播方向变宽,从而扩大观察光瞳。
    • 7. 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。