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公开(公告)号：US20160370583A1
公开(公告)日：2016-12-22
申请号：US15255934
申请日：2016-09-02
Applicant: Microsoft Technology Licensing, LLC
Inventor： Pasi Saarikko , Xinye Lou , Scott McEldowney , Steven Robbins
CPC classification number: G02B27/0093 , A61B3/113 , G02B6/02085 , G02B6/34 , G02B27/0172 , G02B2027/0107 , G02B2027/0138 , G02B2027/0178 , G06F3/013 , H04N13/383
Abstract: 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.
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公开(公告)号：US09494799B2
公开(公告)日：2016-11-15
申请号：US14495273
申请日：2014-09-24
Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC
Inventor： Steven Robbins , Ian A. Nguyen
IPC: G02B27/01 , G06F3/01 , G02B27/00 , G02F1/29 , H04N5/33 , H04N5/232 , G06T19/00 , G02B13/14 , A61B3/00 , A61B3/113
CPC classification number: G02B27/0172 , A61B3/005 , A61B3/113 , G02B13/14 , G02B27/0093 , G02B27/0101 , G02B2027/0138 , G02B2027/014 , G02B2027/0178 , G02F1/292 , G06F3/013 , G06T19/006 , H04N5/23212 , H04N5/33
Abstract: A transparent waveguide, for use in tracking an eye illuminated by infrared light, includes an input-coupler and an output-coupler. The input-coupler includes a stack of electronically switchable diffractive gratings arranged parallel to one another, each of which has a respective lens power that causes each of the gratings in the stack to have a different focal length. Each grating, when turned on, couples received infrared light into the waveguide. A sensor images an eye in dependence on infrared light beams that exit the waveguide at the output-coupler. Images of an eye, obtained using the sensor, are analyzed to determine which one of the electronically switchable diffractive gratings, when turned on, provides a best focused image of the eye or portion thereof. The one of the electronically switchable diffractive gratings, which provides the best focused image of the eye, is used for imaging the eye during eye tracking.
Abstract translation: 用于跟踪由红外光照射的眼睛的透明波导包括输入耦合器和输出耦合器。 输入耦合器包括彼此平行布置的电子可切换衍射光栅的堆叠，每个衍射光栅具有相应的透镜功率，其使堆叠中的每个光栅具有不同的焦距。 每个光栅在接通时将接收到的红外光耦合到波导中。 传感器根据在输出耦合器处离开波导的红外光束对眼睛进行成像。 分析使用传感器获得的眼睛的图像，以确定何时电子可切换衍射光栅在打开时提供眼睛或其部分的最佳聚焦图像。 提供眼睛最佳聚焦图像的电子可切换衍射光栅之一被用于眼睛跟踪期间的眼睛成像。
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Patent Agency Ranking
公开(公告)号：US09759913B2
公开(公告)日：2017-09-12
申请号：US15255934
申请日：2016-09-02
Applicant: Microsoft Technology Licensing, LLC
Inventor： Pasi Saarikko , Xinye Lou , Scott McEldowney , Steven Robbins
IPC: G02B6/34 , G03H1/00 , G09G5/00 , G02B27/00 , G02B6/02 , H04N13/04 , G06F3/01 , A61B3/113 , G02B27/01
CPC classification number: G02B27/0093 , A61B3/113 , G02B6/02085 , G02B6/34 , G02B27/0172 , G02B2027/0107 , G02B2027/0138 , G02B2027/0178 , G06F3/013 , H04N13/383
Abstract: 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.
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公开(公告)号：US09377623B2
公开(公告)日：2016-06-28
申请号：US14456512
申请日：2014-08-11
Applicant: Microsoft Technology Licensing, LLC
Inventor： Steven Robbins , Ian A. Nguyen , Xinye Lou
CPC classification number: G02B27/0093 , G02B5/18 , G02B27/017 , G02B27/0172 , G06F3/013
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US10095045B2
公开(公告)日：2018-10-09
申请号：US15262282
申请日：2016-09-12
Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC
Inventor： Steven Robbins , Sihui He , Eliezer Glik , Xinye Lou
Abstract: An optical waveguide, for use a near-eye or heads-up display system, includes an input-coupler, an intermediate-component and an output-coupler. The input-coupler is configured to couple light corresponding to an image that is incident on the input-coupler, into the optical waveguide and towards the intermediate-component. The intermediate-component can be implemented as a Bragg polarization grating that comprises a stack of birefringent layers configured to diffract the light corresponding to the image that is incident thereon into a zero-order beam having one of right handed circular polarization or left handed circular polarization, and a first-order beam having the other one of right handed circular polarization or left handed circular polarization. The output-coupler is configured to couple, out of the optical waveguide, the light corresponding to the image that travels in the optical waveguide from the input-coupler to the output-coupler via the intermediate-component by way of total internal reflection (TIR).
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公开(公告)号：US20180074340A1
公开(公告)日：2018-03-15
申请号：US15262282
申请日：2016-09-12
Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC
Inventor： Steven Robbins , Sihui He , Eliezer Glik , Xinye Lou
CPC classification number: G02B27/4261 , G02B5/1833 , G02B6/105 , G02B27/0081 , G02B27/0101 , G02B27/0927 , G02B27/0944
Abstract: An optical waveguide, for use a near-eye or heads-up display system, includes an input-coupler, an intermediate-component and an output-coupler. The input-coupler is configured to couple light corresponding to an image that is incident on the input-coupler, into the optical waveguide and towards the intermediate-component. The intermediate-component can be implemented as a Bragg polarization grating that comprises a stack of birefringent layers configured to diffract the light corresponding to the image that is incident thereon into a zero-order beam having one of right handed circular polarization or left handed circular polarization, and a first-order beam having the other one of right handed circular polarization or left handed circular polarization. The output-coupler is configured to couple, out of the optical waveguide, the light corresponding to the image that travels in the optical waveguide from the input-coupler to the output-coupler via the intermediate-component by way of total internal reflection (TIR).
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公开(公告)号：US09459451B2
公开(公告)日：2016-10-04
申请号：US14140987
申请日：2013-12-26
Applicant: Microsoft Technology Licensing, LLC
Inventor： Pasi Saarikko , Xinye Lou , Scott McEldowney , Steven Robbins , Tapani Levola
IPC: G02B6/34 , G03H1/00 , G09G5/00 , G02B27/00 , G02B6/02 , H04N13/04 , G06F3/01 , A61B3/113 , G02B27/01
CPC classification number: G02B27/0093 , A61B3/113 , G02B6/02085 , G02B6/34 , G02B27/0172 , G02B2027/0107 , G02B2027/0138 , G02B2027/0178 , G06F3/013 , H04N13/383
Abstract: 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.
Abstract translation: 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。
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