公开(公告)号：US10067347B2

公开(公告)日：2018-09-04

申请号：US15097929

申请日：2016-04-13

Applicant: Microsoft Technology Licensing, LLC

Inventor： Tuomas Vallius ,  Jani Tervo ,  Pasi Pietila

IPC: G02B27/01 ,  F21V8/00 ,  G02B27/00 ,  G02B27/42

Abstract: An apparatus for use in replicating an image associated with an input-pupil to an output-pupil, comprises an optical waveguide including input-coupler, one or more intermediate-components and an output-coupler. The input-coupler couples light corresponding to the image into the optical waveguide and diffracts the light corresponding to the image in at least two different directions so that light corresponding to the image is diffracted toward each of the one or more intermediate-components. The intermediate-component(s) is/are configured to individually or collectively perform both odd-order pupil expansion and even-order pupil expansion on light corresponding to the image that travels from the input-coupler to the one or more intermediate-components by way of TIR, and diffract the light corresponding to the image towards the output-coupler. The output-coupler is configured to couple the light corresponding to the image out of the optical waveguide so that the light corresponding to the image is viewable from the output-pupil.

公开(公告)号：US09864208B2

公开(公告)日：2018-01-09

申请号：US14813305

申请日：2015-07-30

Applicant: Microsoft Technology Licensing, LLC

Inventor： Tuomas Vallius ,  Lauri Sainiemi

IPC: G02B27/42 ,  G02B5/18 ,  G02B6/34 ,  G02B27/01 ,  G02B27/09

CPC classification number: G02B27/4205 ,  G02B5/1819 ,  G02B6/34 ,  G02B27/0172 ,  G02B27/0944 ,  G02B2027/0125 ,  G02B2027/0178

Abstract: In an optical display system that includes a waveguide with multiple diffractive optical elements (DOEs), one or more of the DOEs is configured with gratings that have varying depth and varying directions for depth modulation, in which the modulation direction is aligned with the steepest change (i.e., slope) of grating depth. Depth modulation direction may change at a point of transition between different regions in the DOE. For example, with a zero axis being defined along a line parallel to a long side of a DOE, the depth modulation direction can change from a negative angle, with respect to the axis in the plane of the waveguide in one region, to a positive angle in another region, or vice versa. By varying depth modulation direction in a DOE, display uniformity in the optical display system may be increased.

公开(公告)号：US09791703B1

公开(公告)日：2017-10-17

申请号：US15097661

申请日：2016-04-13

Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC

Inventor： Tuomas Vallius ,  Jani Tervo

IPC: G02B27/14 ,  G02B27/44 ,  G02B5/18 ,  G02F1/29 ,  H04N13/04 ,  G02B27/01 ,  F21V8/00 ,  G02B27/00 ,  G02B27/22 ,  G02F1/295 ,  G02B27/42

CPC classification number: G02B27/0172 ,  G02B5/18 ,  G02B5/1814 ,  G02B5/1819 ,  G02B6/0026 ,  G02B6/005 ,  G02B27/0081 ,  G02B27/2235 ,  G02B27/4205 ,  G02B27/44 ,  G02B2005/1804 ,  G02B2027/0123 ,  G02B2027/0125 ,  G02B2027/013 ,  G02B2027/0174 ,  G02F1/292 ,  G02F1/295 ,  H04N13/332 ,  H04N13/344

Abstract: An input-coupler of an optical waveguide couples light corresponding to the image and having a corresponding FOV into the optical waveguide, and the input-coupler splits the FOV of the image coupled into the optical waveguide into first and second portions by diffracting a portion of the light corresponding to the image in a first direction toward a first intermediate-component, and diffracting a portion of the light corresponding to the image in a second direction toward a second intermediate-component. An output-coupler of the waveguide combines the light corresponding to the first and second portions of the FOV, and couples the light corresponding to the combined first and second portions of the FOV out of the optical waveguide so that the light corresponding to the image and the combined first and second portions of the FOV is output from the optical waveguide. The intermediate-components and the output-coupler also provide for pupil expansion.