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    • 7. 发明申请
    • VIRTUAL RETINAL DISPLAY WITH EXPANDED EXIT PUPIL
    • 虚拟终极显示与扩展退出PUPIL
    • WO1997037339A1
    • 1997-10-09
    • PCT/US1997003302
    • 1997-02-27
    • UNIVERSITY OF WASHINGTON
    • UNIVERSITY OF WASHINGTONKOLLIN, Joel, S.JOHNSTON, Richard, S.MELVILLE, Charles, D.
    • G09G05/00
    • G02B26/101G02B27/0081G02B27/017G02B27/0172
    • A display device (10) is achieved using an optical system which generates an expanded exit pupil (21) without compromising magnification or resolution. Modulated light from a source (12) is converged toward a focal point by an optics subsystem (14). A scanning subsystem (16) deflects the converging light, and thus the focal point, along a raster pattern to define a curved intermediate image plane (15). An exit pupil expanding apparatus (18) defines a curved surface which coincides with the curved image plane (15). Impinging light rays at a given instant in time span a given incidence angle ( theta i). Exiting light rays span a larger angle ( theta o). The exiting light spans a larger surface area of an ensuing eyepiece (20). In turn an expanded exit pupil (21) occurs beyond the eyepiece. Exit pupil expanding embodiments include a curved diffractive optical element (300), fiber optic face plate (320), lens array (340) and diffuser (360). The diffractive optical element generates multiple exit pupils (304-316), while the other embodiments generate enlarged exit pupils.
    • 使用在不损害放大率或分辨率的情况下产生扩展出射光瞳(21)的光学系统实现显示装置(10)。 来自光源(12)的调制光通过光学子系统(14)会聚到焦点。 扫描子系统(16)沿着光栅图案偏转会聚光,从而偏转焦点,以限定弯曲的中间像平面(15)。 出射光瞳扩张装置(18)限定与曲面像平面(15)重合的曲面。 在给定的瞬间,在给定的入射角(θi)中引发光线。 退出光线跨越较大的角度(θo)。 出射光横跨随后的目镜(20)的较大表面积。 反过来,扩展的出射光瞳(21)发生在目镜之外。 退出光瞳扩展实施例包括弯曲衍射光学元件(300),光纤面板(320),透镜阵列(340)和漫射器(360)。 衍射光学元件产生多个出射光瞳(304-316),而其他实施例产生放大的出射光瞳。