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。

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

IPC: G09G5/00 ,  G02B27/00 ,  G02B27/01 ,  G06F3/01 ,  G02B5/18

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。

公开(公告)号：US09164290B2

公开(公告)日：2015-10-20

申请号：US14073746

申请日：2013-11-06

Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC

Inventor： Steve J. Robbins ,  Ian A. Nguyen

IPC: G02B27/42 ,  G02B27/01 ,  G02B5/18

CPC classification number: G02B27/4205 ,  G02B5/1828 ,  G02B27/01 ,  G02B27/0172 ,  G02B2027/0123

Abstract: Grating configurations are described for creating time sequenced field of view (FOV) tiles for a waveguide display. Pairings of non-output diffraction gratings and output diffraction gratings are activated to create a number of FOV tiles in a time sequence, for example in a frame update period for the image. Examples of a non-output grating are an input grating and a fold grating. For a set of at least three gratings used to make the pairings, each non-output grating is paired with each output grating. The number of pairings, and so the number of FOV tiles, is equal to a product of the total number of non-output gratings and the total number of output gratings. At least one diffraction grating in the pairing is an active pairing. Also described is a multiplexed diffraction grating including multiplexed K-vectors which increases the overall angular bandwidth for both incidence and diffraction.

Abstract translation: 描述光栅配置用于为波导显示器创建时间序列视场（FOV）平铺。 非输出衍射光栅和输出衍射光栅的配对被激活以在时间序列中创建多个FOV瓦片，例如在图像的帧更新周期中。 非输出光栅的示例是输入光栅和折叠光栅。 对于一组用于进行配对的至少三个光栅，每个非输出光栅与每个输出光栅配对。 配对的数量以及FOV瓦片的数量等于非输出光栅总数和输出光栅总数的乘积。 配对中的至少一个衍射光栅是有源配对。 还描述了包括多路复用K向量的复用衍射光栅，其增加了入射和衍射两者的总角带宽。