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    Stereoscopic display with reduced accommodation fatique
    1.
    发明授权
    Stereoscopic display with reduced accommodation fatique 有权

    公开(公告)号：US10545344B2

    公开(公告)日：2020-01-28

    申请号：US15599828

    申请日：2017-05-19

    Applicant: Kent State University ,  Intel Corporation

    Inventor： Philip Bos ,  Afsoon Jamali ,  Anders Grunnet-Jepson ,  Achintya K. Bhowmik

    IPC: G02B27/01 ,  G02B27/00

    Abstract: A stereoscopic display device is provided for displaying a three-dimensional (3D) image as viewed by eyes consisting of a left eye and a right eye. In the display device, a single display screen, or separate left and right display screens, present a left image to the left eye but not the right eye, and present a right image to the right eye but not the left eye. A gaze distance tracker is configured to track gaze distance of the eyes. Variable-power lenses include a left variable-power lens arranged to provide eye accommodation for the left eye, and a right variable-power lens arranged to provide eye accommodation for the right eye. An electronic eye accommodation controller is configured to control the power of the variable power lenses to allow the image from the display to be focused on the retina, while the biological eye lens is accommodated to the gaze distance.

    DISPLAY FOR AUGMENTED REALITY AND VIRTUAL REALITY SYSTEMS
    3.
    发明公开
    DISPLAY FOR AUGMENTED REALITY AND VIRTUAL REALITY SYSTEMS 审中-公开

    公开(公告)号：US20240004107A1

    公开(公告)日：2024-01-04

    申请号：US18214057

    申请日：2023-06-26

    Applicant: KENT STATE UNIVERSITY

    Inventor： Afsoon Jamali ,  Amit Bhowmick ,  Douglas Bryant ,  Sandro Pintz ,  Phillip Bos

    IPC: G02B3/00 ,  G02B27/01 ,  G02B3/14 ,  G02F1/29

    CPC classification number: G02B3/0087 ,  G02B27/0172 ,  G02B3/14 ,  G02F1/294 ,  G02B2003/0093

    Abstract: A gradient refractive index (GRIN) lens includes a transparent central disk and transparent annular segments, including central annular segments and peripheral annular segments. The central disk and each annular segment has a continuous optical phase profile at a design wavelength along a radial direction extending outward from a center of the central disk. An optical phase discontinuity is present at the interface between the central disk and the innermost central annular segment and at the interface between each pair of adjacent annular segments. Radial widths of the central annular segments decrease with increasing distance away from the center of the central disk. The peripheral annular segments have optical phase profiles for the design wavelength that are linear or have maximum first derivatives that are constant or become smaller with increasing distance of the peripheral annular segments away from the center of the central disk.

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