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    • 6. 发明申请
    • IMAGE DISPLAY APPARATUS AND OPTICAL MEMBER THEREFOR
    • 图像显示装置及其光学构件
    • US20080225373A1
    • 2008-09-18
    • US12044561
    • 2008-03-07
    • Goro HAMAGISHIOsamu YOKOYAMA
    • Goro HAMAGISHIOsamu YOKOYAMA
    • G02F1/01
    • H04N13/359H04N13/305
    • An image display apparatus capable of switching a display mode between a directional display mode of displaying a first image in a first viewing direction and a second image in a second viewing direction and a non-directional display mode of displaying the same image in both the first and second viewing directions includes an image forming unit and an optical member. The image forming unit forms an image and emits image light representing the image. The optical member is disposed adjacent to an emitting side of the image forming unit and is used for switching the display mode. The optical member includes two light-transmitting plate members, a lens member disposed between the two plate members and having a predetermined refractive index, a refractive-index variable medium sealed in a gap between the lens member and the two plate members, and a refractive-index adjusting unit that adjusts a refractive index of the refractive-index variable medium. The refractive-index adjusting unit is configured to (i) set the optical member to be in a first usage state in which the optical member performs a lens action by adjusting the refractive-index variable medium to have a refractive index different from the predetermined refractive index so that the display mode of the image display apparatus is set to be the directional display mode and (ii) set the optical member to be in a second usage state in which the optical member functions as a light-transmitting plate performing no lens action by adjusting the refractive-index variable medium to have the same refractive index as the predetermined refractive index so that the display mode of the image display apparatus is set to be the non-directional display mode.
    • 一种图像显示装置,其能够在第一观察方向上显示第一图像的方向显示模式和第二观察方向的第二图像之间切换显示模式,以及在第一观察方向上显示相同图像的非方向性显示模式 第二观察方向包括图像形成单元和光学构件。 图像形成单元形成图像并发射表示图像的图像光。 光学构件设置成与图像形成单元的发射侧相邻,并用于切换显示模式。 光学构件包括两个透光板构件,设置在两个板构件之间并具有预定折射率的透镜构件,密封在透镜构件和两个板构件之间的间隙中的折射率可变介质,以及折射率 指数调整单元,其调节折射率可变介质的折射率。 折射率调整单元被配置为(i)将光学构件设置为处于第一使用状态,其中光学构件通过调节折射率可变介质来实现透镜作用,使其具有与预定折射率不同的折射率 索引,使得图像显示装置的显示模式被设置为方向显示模式,并且(ii)将光学构件设置为第二使用状态,其中光学构件用作不执行透镜动作的透光板 通过将折射率可变介质调节为具有与预定折射率相同的折射率,使得图像显示装置的显示模式被设置为非方向性显示模式。