Display apparatuses, systems and methods including curved waveguides

    公开(公告)号:US10983346B2

    公开(公告)日:2021-04-20

    申请号:US15698456

    申请日:2017-09-07

    Abstract: Apparatuses and systems including curved optical waveguides, and methods for use include an output-grating of a curved waveguide that includes a spatially modulated grating period configured to cause, for each beam of light corresponding to an image coupled into a bulk-substrate of the curved waveguide by an input-grating, corresponding rays of light output from different locations of the output-grating to be substantially collimated. Adaptive optics of a display engine compensate for aberrations that vary over a field-of-view associated with light corresponding to the image out-coupled by the output-grating. Further, a curved portion of the curved waveguide is designed to keep internally reflected light below a critical angle to prevent inadvertent out-coupling thereof. Further, curved surfaces of the curved waveguide can include polynomial surfaces to compensate for lateral color errors and distortion.

    Variable Focal Backlighting
    8.
    发明申请
    Variable Focal Backlighting 有权
    可变焦点背光

    公开(公告)号:US20160231583A1

    公开(公告)日:2016-08-11

    申请号:US15131879

    申请日:2016-04-18

    Inventor: Adrian Travis

    Abstract: A backlight unit includes a waveguide assembly having a first wedge and a birefringent wedge disposed adjacent to, and arranged nose-to-tail with, the first wedge, to define an interface of the waveguide assembly. The birefringent wedge has different indices of refraction for light propagating through the waveguide assembly in first and second polarization states. The first wedge is configured to propagate the light in the second polarization state at a different speed than the birefringent wedge. A liquid crystal layer is configured to selectively switch the light between the first and second polarization states.

    Abstract translation: 背光单元包括波导组件,该波导组件具有与第一楔形件相邻并布置的第一楔形物和布置在第一楔形物上的双折射楔形件,以限定波导组件的界面。 双折射楔对于在第一和第二极化状态下通过波导组件传播的光具有不同的折射率。 第一楔形构造成以与双折射楔不同的速度传播处于第二偏振状态的光。 液晶层被配置为选择性地在第一和第二偏振状态之间切换光。

    Binocular image alignment for near-eye display

    公开(公告)号:US10178378B2

    公开(公告)日:2019-01-08

    申请号:US15097199

    申请日:2016-04-12

    Inventor: Adrian Travis

    Abstract: A near-eye display device comprises a left-eye optical system and a right-eye optical system. Each of the left-eye optical system and the right-eye optical system comprises a holographic optical component positioned in a field of view of a user eye, an image source configured to emit imaging light, and an alignment optical component, wherein projection beam path between the image source and the light-deflecting optical component and an alignment beam path between the alignment optical component and the light-deflecting component share a common optical path.

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