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    • 7. 发明授权
    • Image display apparatus
    • 图像显示装置
    • US08638499B2
    • 2014-01-28
    • US12539323
    • 2009-08-11
    • Hiroshi Mukawa
    • Hiroshi Mukawa
    • G02B27/14F21V7/04
    • G02B27/0172G02B5/18G02B5/32G02B6/0033G02B6/0055G02B26/10G02B26/101G02B27/0081G02B2027/0112G02B2027/0118G02B2027/0174
    • An image display apparatus includes an image forming device, a collimating optical system, and an optical device. The optical device includes a light guide plate, a first deflecting member that deflects light incident on the light guide plate, and a second deflecting member that deflects the light, which propagates in the light guide plate by total reflection, a plurality of times. The first and second deflecting members are provided in the light guide plate. Light having one wavelength emitted from at least one pixel satisfies the following condition: 2t·sin θ−2≦WY≦2t·sin θ+2 where an axial direction of the light guide plate is the Y-direction, WY represents the width in the Y-direction of the light incident on the light guide plate, t represents the thickness of the light guide plate, and θ represents the total reflection angle.
    • 图像显示装置包括图像形成装置,准直光学系统和光学装置。 光学装置包括导光板,使入射在导光板上的光偏转的第一偏转构件,以及通过全反射使在导光板中传播的光多次偏转的第二偏转构件。 第一和第二偏转构件设置在导光板中。 具有从至少一个像素发射的一个波长的光满足以下条件:导光板的轴向为Y方向的2t·sinθ-2 @ WY @ 2t·sinθ+ 2,WY表示 入射在导光板上的光的Y方向,t表示导光板的厚度,θ表示全反射角。
    • 8. 发明授权
    • Image display apparatus
    • 图像显示装置
    • US08220966B2
    • 2012-07-17
    • US12910541
    • 2010-10-22
    • Hiroshi Mukawa
    • Hiroshi Mukawa
    • G02B6/26G02B5/18
    • G02B3/0056G02B5/30G02B6/0015G02B6/0035G02B27/0172G02B27/102G02B27/1033G02B27/149G02B2027/012G02B2027/0174
    • An image display apparatus includes an image forming device having pixels; a collimating optical system collimating light from the image forming device; and an optical device receiving, guiding, and outputting the collimated light as directional rays in different directions. The optical device includes a light-guiding plate; a first optical member reflecting or diffracting the light so as to totally reflect the light inside the light-guiding plate; and a second optical member causing the propagated light to emerge from the light-guiding plate. When a light ray emitted from a pixel located farthest from the center of the image forming device and a light ray emitted from a pixel located at the center of the image forming device pass through a front nodal point of the collimating optical system and are respectively incident on the collimating optical system and the light-guiding plate at angles θ1 and θ2, θ2>θ1 is satisfied.
    • 图像显示装置包括具有像素的图像形成装置; 准直光学系统准直来自图像形成装置的光; 以及在不同方向上接收,引导和输出准直光作为定向射线的光学装置。 光学装置包括导光板; 反射或衍射光的第一光学构件,以便全部反射导光板内的光; 以及使所述传播光从所述导光板露出的第二光学部件。 当从位于离图像形成装置的中心最远的像素发射的光线和从位于图像形成装置的中心的像素发射的光线经过准直光学系统的前节点时,分别入射 在准直光学系统和导光板处于角度和角度; 1和& the; 2;& The; 2&&Thetas; 1。
    • 9. 发明授权
    • Optical device, and virtual image display device
    • 光学设备和虚拟图像显示设备
    • US08073296B2
    • 2011-12-06
    • US13102397
    • 2011-05-06
    • Hiroshi MukawaKatsuyuki Akutsu
    • Hiroshi MukawaKatsuyuki Akutsu
    • G02B6/26G02B5/32
    • G02B27/0172G02B5/18G02B5/1842G02B6/00G02B6/0026G02B6/0033G02B6/005G02B6/2848G02B6/43G02B13/18G02B17/004G02B17/006G02B17/0856G02B27/0081G02B27/01G02B27/0103G02B27/017G02B27/144G02B2027/0116G02B2027/0118G02B2027/0125G02B2027/0174
    • A virtual image display device which displays a two-dimensional image for viewing a virtual image in a magnified form by a virtual optical system. The virtual image display device includes an optical waveguide to guide, by internal total reflection, parallel pencil groups meeting a condition of internal total reflection, a first reflection volume hologram grating to diffract and reflect the parallel pencil groups incident upon the optical waveguide from outside and traveling in different directions as they are so as to meet the condition of internal total reflection inside the optical waveguide and a second reflection volume hologram grating to project the parallel pencil groups guided by internal total reflection inside the optical waveguide as they are from the optical waveguide by diffraction and reflection thereof so as to depart from the condition of internal total reflection inside the optical waveguide. Some of the parallel pencil groups guided through the optical waveguide being totally reflected different numbers of times for a period from external incidence upon the optical waveguide until outgoing from the optical waveguide.
    • 虚拟图像显示装置,其通过虚拟光学系统显示用于以放大形式观看虚拟图像的二维图像。 虚拟图像显示装置包括光波导,通过内部全反射来引导满足内部全反射条件的平行笔组,第一反射体积全息图光栅,用于从外部衍射并反射入射在光波导上的平行笔组, 沿着不同方向行进,以满足光波导内的内部全反射的条件和第二反射体全息图光栅,以使来自光波导的光波导内的内部全反射引导的平行笔组投影 通过其衍射和反射,以便偏离光波导内的内部全反射的条件。 引导穿过光波导的一些平行铅笔组在从光波导的外部入射到光波导出射的时间段内被完全反射不同的次数。
    • 10. 发明授权
    • Image display apparatus
    • 图像显示装置
    • US07841745B2
    • 2010-11-30
    • US12254981
    • 2008-10-21
    • Hiroshi Mukawa
    • Hiroshi Mukawa
    • G02B6/26G02B5/18
    • G02B3/0056G02B5/30G02B6/0015G02B6/0035G02B27/0172G02B27/102G02B27/1033G02B27/149G02B2027/012G02B2027/0174
    • An image display apparatus includes an image forming device having pixels; a collimating optical system collimating light from the image forming device; and an optical device receiving, guiding, and outputting the collimated light as directional rays in different directions. The optical device includes a light-guiding plate; a first optical member reflecting or diffracting the light so as to totally reflect the light inside the light-guiding plate; and a second optical member causing the propagated light to emerge from the light-guiding plate. When a light ray emitted from a pixel located farthest from the center of the image forming device and a light ray emitted from a pixel located at the center of the image forming device pass through a front nodal point of the collimating optical system and are respectively incident on the collimating optical system and the light-guiding plate at angles θ1 and θ2, θ2>θ1 is satisfied.
    • 图像显示装置包括具有像素的图像形成装置; 准直光学系统准直来自图像形成装置的光; 以及在不同方向上接收,引导和输出准直光作为定向射线的光学装置。 光学装置包括导光板; 反射或衍射光的第一光学构件,以便全部反射导光板内的光; 以及使所述传播光从所述导光板露出的第二光学部件。 当从位于离图像形成装置的中心最远的像素发射的光线和从位于图像形成装置的中心的像素发射的光线经过准直光学系统的前节点时,分别入射 在准直光学系统和导光板处于角度和角度; 1和& the; 2;& The; 2&&Thetas; 1。