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    EYE-TRACKING SYSTEM FOR HEAD-MOUNTED DISPLAY
    4.
    发明申请
    EYE-TRACKING SYSTEM FOR HEAD-MOUNTED DISPLAY 有权
    用于头戴式显示器的眼睛跟踪系统

    公开(公告)号：US20140375789A1

    公开(公告)日：2014-12-25

    申请号：US13926968

    申请日：2013-06-25

    申请人： Xinye Lou ,  Scott McEldowney ,  Steve Robbins

    发明人： Xinye Lou ,  Scott McEldowney ,  Steve Robbins

    IPC分类号： G02B27/01 ,  G06F3/01 ,  G02B27/00

    CPC分类号： G02B27/0172 ,  G02B27/0093 ,  G02B27/017 ,  G02B2027/0178 ,  G02B2027/0187 ,  G06F3/013

    摘要： Embodiments are disclosed for a see-through head-mounted display system. In one embodiment, the see-through head-mounted display system comprises a freeform prism, and a display device configured to emit display light through the freeform prism to an eye of a user. The see-through head-mounted display system may also comprise an imaging device having an entrance pupil positioned at a back focal plane of the freeform prism, the imaging device configured to receive gaze-detection light reflected from the eye and directed through the freeform prism.

    摘要翻译： 公开了一种透视式头戴式显示系统的实施例。 在一个实施例中，透视式头戴式显示系统包括自由形棱镜和被配置为将显示光通过自由形棱镜发射到用户的眼睛的显示装置。 透视式头戴显示系统还可以包括成像装置，其具有位于自由形棱镜的后焦平面处的入射光瞳，该成像装置被配置为接收从眼睛反射并引导通过自由形棱镜的注视检测光 。

    WAVEGUIDE EYE TRACKING EMPLOYING VOLUME BRAGG GRATING
    5.
    发明申请
    WAVEGUIDE EYE TRACKING EMPLOYING VOLUME BRAGG GRATING 有权
    波形眼睛跟踪使用体积BRAGG GRATING

    公开(公告)号：US20160041384A1

    公开(公告)日：2016-02-11

    申请号：US14456512

    申请日：2014-08-11

    申请人： Steven Robbins ,  Ian A. Nguyen ,  Xinye Lou

    发明人： Steven Robbins ,  Ian A. Nguyen ,  Xinye Lou

    IPC分类号： G02B27/00 ,  G06F3/01 ,  G02B27/01

    CPC分类号： G02B27/0093 ,  G02B5/18 ,  G02B27/017 ,  G02B27/0172 ,  G06F3/013

    摘要： A transparent waveguide, which is for use in tracking an eye that is illuminated by infrared light having an infrared wavelength, includes a volume Bragg grating type of input-coupler adapted to receive infrared light having the infrared wavelength and couple the received infrared light into the waveguide. The volume Bragg grating includes a lower boundary and an upper boundary that is closer to the output-coupler than the lower boundary. A k-vector angle of the volume Bragg grating at the lower boundary is greater than a k-vector angle at the upper boundary, with k-vector angles of the volume Bragg grating between the lower and upper boundaries gradually decreasing as distances decrease between grating planes of the volume Bragg grating and the upper boundary. Additionally, the volume Bragg grating preferably has an angular bandwidth that is no greater than 5 degrees.

    摘要翻译： 用于跟踪由具有红外波长的红外光照射的眼睛的透明波导包括体积布拉格光栅类型的输入耦合器，其适于接收具有红外波长的红外光并将接收到的红外光耦合到 波导。 体积布拉格光栅包括比下边界更靠近输出耦合器的下边界和上边界。 下边界体积布拉格光栅的k向量角大于上边界的k向量角，下边界和上边界之间的体积布拉格光栅的k向量角随着光栅间距的减小而逐渐减小 体积布拉格光栅的平面和上边界。 另外，体积布拉格光栅优选具有不大于5度的角带宽。

    EYE TRACKING APPARATUS, METHOD AND SYSTEM
    7.
    发明申请
    EYE TRACKING APPARATUS, METHOD AND SYSTEM 有权
    眼睛跟踪装置，方法和系统

    公开(公告)号：US20150185475A1

    公开(公告)日：2015-07-02

    申请号：US14140987

    申请日：2013-12-26

    申请人： Pasi Saarikko ,  Xinye Lou ,  Scott McEldowney ,  Steven Robbins ,  Tapani Levola

    发明人： Pasi Saarikko ,  Xinye Lou ,  Scott McEldowney ,  Steven Robbins ,  Tapani Levola

    IPC分类号： G06K9/00 ,  G02B6/34 ,  G06F3/01 ,  G02B27/01 ,  G02B6/36

    CPC分类号： G02B27/0093 ,  A61B3/113 ,  G02B6/02085 ,  G02B6/34 ,  G02B27/0172 ,  G02B2027/0107 ,  G02B2027/0138 ,  G02B2027/0178 ,  G06F3/013 ,  H04N13/383

    摘要： A transparent waveguide for use in eye tracking includes an input-coupler and an output-coupler. The input-coupler comprises a plurality of curved grating lines having a radially varying pitch. When positioned in front of an eye illuminated with infrared light, infrared light beams reflected from the eye and incident on the input-coupler enter the waveguide at the input-coupler, propagate through the waveguide by way of total internal reflections, and exit the waveguide proximate the output-coupler. The radially varying pitch of the curved grating lines of the input-coupler provides angular encoding of infrared light incident on the input-coupler, and more specifically, causes different beams of infrared light incident on respective different horizontal and vertical positions of the input-coupler to propagate through the waveguide at respective different angles of reflection and exit the waveguide at respective different angles of incidence relative to a surface of the waveguide through which infrared light beams exit.

    摘要翻译： 用于眼睛跟踪的透明波导包括输入耦合器和输出耦合器。 输入耦合器包括具有径向变化间距的多个弯曲光栅线。 当放置在用红外线照射的眼睛前方时，从眼睛反射并入射到输入耦合器上的红外光束进入输入耦合器处的波导，通过全内反射传播通过波导，并且离开波导 靠近输出耦合器。 输入耦合器的弯曲光栅线的径向变化的间距对入射到输入耦合器上的红外光的角度编码提供了角度编码，更具体地说，使不同的红外光束入射在输入耦合器的不同的水平和垂直位置上 以相应的不同的反射角传播通过波导并以相应的入射角相对于波导的表面离开波导，红外光束通过该表面离开。