公开(公告)号：US11966044B2

公开(公告)日：2024-04-23

申请号：US17967496

申请日：2022-10-17

Applicant: Microsoft Technology Licensing, LLC

Inventor： Andreas Georgiou ,  Alfonsus D. Lunardhi ,  Joel Steven Kollin ,  Bernard C. Kress ,  Ishan Chatterjee ,  Mario Possiwan

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

CPC classification number: G02B27/0068 ,  G02B27/0093 ,  G02B27/0172 ,  G02F1/29 ,  G02B2027/011

Abstract: This document relates to an optical device that uses adaptive optics as part of an optical system. The adaptive optics can be used to correct light rays that correspond to a portion of an eye box based on information received from an eye-tracking unit, and can also correct for aberrations in the optics in the optical device. The adaptive optics include corrective elements that can be modified using modifying elements to correct the angle of light rays, such that rays associated with a specific pupil position and gaze direction of a user's eye can be made parallel and ensure a high quality image is viewed by the user.

公开(公告)号：US11722654B1

公开(公告)日：2023-08-08

申请号：US17829325

申请日：2022-05-31

Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC

Inventor： Michael Scott Sutton ,  James P. Terrell, Jr. ,  Dmitriy Churin ,  Ishan Chatterjee ,  Rayna Demaster-Smith

IPC: H04N13/327 ,  G02B27/42 ,  H04N13/344 ,  H04N25/00 ,  H04N13/00

CPC classification number: H04N13/327 ,  G02B27/4233 ,  H04N13/344 ,  H04N25/00 ,  H04N2013/0081

Abstract: The techniques disclosed herein may be utilized to detect, measure, and/or compensate for misalignments of a display that may occur after manufacturing. A Talbot sensor is described that includes a diffraction device and an image sensor. Captured images from the image sensor include pixel data values that include bright and dark spots that represent a diffraction pattern associated with the Talbot sensor. A demodulator multiplies the pixel data values with sine and cosine reference images to generate averaged in-phase and quadrature values, which can be used to determine a phase angle for incident light on the Talbot sensor. Phase angle changes over time indicate changes in the alignment of the display, which may be corrected by display parameter manipulation. The resulting devices, systems and methods provide for portable solutions, with reduced cost of manufacturing, reduced part costs, and reduced complexity.

公开(公告)号：US11693248B1

公开(公告)日：2023-07-04

申请号：US17580421

申请日：2022-01-20

Applicant: Microsoft Technology Licensing, LLC

Inventor： Ishan Chatterjee ,  Dmitry Reshidko ,  Bernard Charles Kress

IPC: G02B27/01 ,  F21V8/00 ,  G02F1/1362

CPC classification number: G02B27/0172 ,  G02B6/005 ,  G02B6/0073 ,  G02F1/136277

Abstract: A display engine adapted for use in a head-mounted display (HMD) device includes a reflective liquid crystal on silicon (LCoS) spatial light modulator (SLM) that is illuminated using a backlight illumination module and a pair of optical prisms providing a total internal reflection (TIR) function. In an illustrative mixed-reality embodiment, the TIR prism pair guides light to the LCoS SLM from the backlight illumination module and projects virtual images reflected from the LCoS SLM, through projection optics, to a diffractive waveguide combiner for viewing by an HMD user.

公开(公告)号：US11467406B2

公开(公告)日：2022-10-11

申请号：US16586660

申请日：2019-09-27

Applicant: Microsoft Technology Licensing, LLC

Inventor： Ishan Chatterjee ,  Bernard Charles Kress

IPC: G02B27/01 ,  B82Y35/00 ,  F21V8/00 ,  G02B27/00

Abstract: This document relates to an optical device using waveguide that can enable propagation of large field of view images by use of metasurfaces, without the necessity of increasing the reflective index associated with the waveguide. An optical assembly can generate a compressed image corresponding to a wide field of view in order to ensure that the image can propagate through the waveguide according to TIR limits of the waveguide. The compressed image can be provided to a standard grating in-coupler, and can then be expanded by a metasurface out-coupler of the optical device to reproduce the wide field of view.

公开(公告)号：US12174385B2

公开(公告)日：2024-12-24

申请号：US18330448

申请日：2023-06-07

Applicant: Microsoft Technology Licensing, LLC

Inventor： Ishan Chatterjee ,  Dmitry Reshidko ,  Bernard Charles Kress

IPC: G02B27/01 ,  F21V8/00 ,  G02F1/1362

Abstract: A display engine adapted for use in a head-mounted display (HMD) device includes a reflective liquid crystal on silicon (LCoS) spatial light modulator (SLM) that is illuminated using a backlight illumination module and a pair of optical prisms providing a total internal reflection (TIR) function. In an illustrative mixed-reality embodiment, the TIR prism pair guides light to the LCoS SLM from the backlight illumination module and projects virtual images reflected from the LCoS SLM, through projection optics, to a diffractive waveguide combiner for viewing by an HMD user.

公开(公告)号：US11940628B2

公开(公告)日：2024-03-26

申请号：US17648534

申请日：2022-01-20

Applicant: Microsoft Technology Licensing, LLC

Inventor： Ishan Chatterjee ,  Dmitry Reshidko

IPC: G02B27/01 ,  G02B26/08 ,  G02F1/1362 ,  G02B6/26

CPC classification number: G02B27/0172 ,  G02B26/0833 ,  G02F1/136277 ,  G02B6/26 ,  G02B2027/0178 ,  G02F2203/12

Abstract: Examples are disclosed that relate to display devices having a common light path region. One example provides a display device comprising a light source configured to emit illumination light along an illumination path, and a spatial light modulator configured to modulate the illumination light and emit the modulated illumination light as image light along an imaging path, wherein at least a portion of the illumination path and at least a portion of the imaging path extend through a common light path region. The display device further comprises one or more optical elements positioned within the common light path region, at least one optical element being configured to guide the illumination light as the illumination light travels through the common light path region toward the spatial light modulator, and shape the image light as the image light travels through the common light path region.

公开(公告)号：US20230228996A1

公开(公告)日：2023-07-20

申请号：US17648534

申请日：2022-01-20

Applicant: Microsoft Technology Licensing, LLC

Inventor： Ishan Chatterjee ,  Dmitry RESHIDKO

IPC: G02B27/01 ,  G02F1/1362 ,  G02B26/08

CPC classification number: G02B27/0172 ,  G02F1/136277 ,  G02B26/0833 ,  G02F2203/12 ,  G02B2027/0178 ,  G02B6/26

Abstract: Examples are disclosed that relate to display devices having a common light path region. One example provides a display device comprising a light source configured to emit illumination light along an illumination path, and a spatial light modulator configured to modulate the illumination light and emit the modulated illumination light as image light along an imaging path, wherein at least a portion of the illumination path and at least a portion of the imaging path extend through a common light path region. The display device further comprises one or more optical elements positioned within the common light path region, at least one optical element being configured to guide the illumination light as the illumination light travels through the common light path region toward the spatial light modulator, and shape the image light as the image light travels through the common light path region.

公开(公告)号：US11435503B2

公开(公告)日：2022-09-06

申请号：US17103693

申请日：2020-11-24

Applicant: Microsoft Technology Licensing, LLC

Inventor： Andreas Georgiou ,  Alfonsus D. Lunardhi ,  Joel Steven Kollin ,  Bernard C. Kress ,  Ishan Chatterjee ,  Mario Possiwan ,  Charles Thomas Hewitt ,  Brian K. Guenter ,  Maria Pace ,  Jacob Hadnett-Hunter

IPC: G02B3/00 ,  G02B3/08 ,  G02B7/02

Abstract: This document relates to head mounted display devices. In one example the head mounted display device includes a light engine including an array of individually controllable pixels that can be energized to emit light. The example also includes an optical assembly physically aligned with the light engine and including a set of focusing elements facing toward the light engine and a different set of focusing elements facing away from the light engine.

公开(公告)号：US11050944B2

公开(公告)日：2021-06-29

申请号：US16204779

申请日：2018-11-29

Applicant: Microsoft Technology Licensing, LLC

Inventor： Ishan Chatterjee ,  Christian Holz

IPC: H04N5/235 ,  G02F1/1343 ,  G02F1/139 ,  H04N1/00 ,  H04N5/232

Abstract: An imaging system comprises an optical sensor array with a plurality of sensor elements, an objective lens, an active polarization filter, and associated logic. The objective lens is configured to direct light from a field of view onto the plurality of sensor elements. Switchable electronically between first and second operational states, the active polarization filter is positioned to filter the light en route to the optical sensor array. The active polarization filter provides unequal relative attenuance, in the first versus the second operational state, of nonparallel polarization components of the light. The logic is configured to switch the active polarization filter from the first operational state to the second operational state, and to compare a light-intensity response of the plurality of sensor elements in the first operational state to the light-intensity response of the plurality of sensor elements in the second operational state.

公开(公告)号：US10924645B2

公开(公告)日：2021-02-16

申请号：US16204613

申请日：2018-11-29

Applicant: Microsoft Technology Licensing, LLC

Inventor： Ishan Chatterjee ,  Christian Holz

IPC: H04N5/225 ,  G02B27/28 ,  H04N1/00 ,  G02B13/00

Abstract: An imaging system comprises one or more optical sensor arrays with separate first and second sensor elements, an objective lens system, a polarization filter system, and associated logic. The objective lens system is configured to direct light received at a given angle onto the first sensor element and onto the second sensor element. The polarization filter system includes a first polarizer portion positioned to filter the light en route to the first sensor element and a second polarizer portion positioned to filter the light en route to the second sensor element, the first and second polarizer portions providing unequal relative attenuance of nonparallel polarization components of the light received at the given angle. The logic is configured to compare intensity of the light directed onto the first sensor element relative to the light directed onto the second sensor element.