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公开(公告)号：US20190072767A1
公开(公告)日：2019-03-07
申请号：US15698456
申请日：2017-09-07
Applicant: Microsoft Technology Licensing, LLC
Inventor： Tuomas Vallius , Adrian Travis , Tero Ollikainen , Dmitry Reshidko
Abstract: Apparatuses and systems including curved optical waveguides, and methods for use therewith, are described herein. An output-grating of a curved waveguide includes a spatially modulated grating period configured to cause, for each beam of light corresponding to an image coupled into a bulk-substrate of the curved waveguide by an input-grating, corresponding rays of light output from different locations of the output-grating to be substantially collimated. Adaptive optics of a display engine compensate for aberrations that vary over a field-of-view associated with light corresponding to the image out-coupled by the output-grating. Further, a curved portion of the curved waveguide is designed to keep internally reflected light below a critical angle to prevent inadvertent out-coupling thereof. Further, curved surfaces of the curved waveguide can include polynomial surfaces to compensate for lateral color errors and distortion.
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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.
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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.
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公开(公告)号：US11137602B2
公开(公告)日：2021-10-05
申请号：US15963769
申请日：2018-04-26
Applicant: Microsoft Technology Licensing, LLC
Inventor： Tuomas Heikki Sakari Vallius , Richard Andrew Wall , Dmitry Reshidko , Heikki Juhana Hyvarinen
Abstract: Examples are disclosed that relate to a display device. One example provides a display device comprising a projector and a pre-expander optic configured to replicate an exit pupil of the projector in at least a first direction, the pre-expander optic comprising a plurality of spectrally-selective pupil-replicating elements to form at least two exit pupils at different spatial locations, each exit pupil being for a different spectral band. The display device further comprises a waveguide comprising at least two incoupling pupils, each incoupling pupil configured to receive light from a corresponding exit pupil of the pre-expander optic, and the waveguide configured to replicate each corresponding exit pupil in at least a second direction and output the light received toward an eyebox.
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公开(公告)号：US10983346B2
公开(公告)日：2021-04-20
申请号：US15698456
申请日：2017-09-07
Applicant: Microsoft Technology Licensing, LLC
Inventor： Tuomas Vallius , Adrian Travis , Tero Ollikainen , Dmitry Reshidko
Abstract: Apparatuses and systems including curved optical waveguides, and methods for use include an output-grating of a curved waveguide that includes a spatially modulated grating period configured to cause, for each beam of light corresponding to an image coupled into a bulk-substrate of the curved waveguide by an input-grating, corresponding rays of light output from different locations of the output-grating to be substantially collimated. Adaptive optics of a display engine compensate for aberrations that vary over a field-of-view associated with light corresponding to the image out-coupled by the output-grating. Further, a curved portion of the curved waveguide is designed to keep internally reflected light below a critical angle to prevent inadvertent out-coupling thereof. Further, curved surfaces of the curved waveguide can include polynomial surfaces to compensate for lateral color errors and distortion.
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Patent Agency Ranking
公开(公告)号：US10732427B2
公开(公告)日：2020-08-04
申请号：US15818668
申请日：2017-11-20
Applicant: Microsoft Technology Licensing, LLC
Inventor： Richard Andrew Wall , Joseph Daniel Lowney , Dmitry Reshidko , Ian Anh Nguyen
IPC: G02B27/42 , G02B26/08 , G02B27/01 , G02B27/00 , G02B5/18 , F21V8/00 , G06F3/01 , G06K9/00 , G06T7/00
Abstract: An eye-tracking system includes an at least partially transparent visible light waveguide having a visible light display region configured to emit visible light to an eye of a user. A light source is configured to emit at least infrared (IR) light that travels along an IR light path to the eye of the user. A microelectromechanical system (MEMS) projector positioned in the IR light path directs the IR light. At least one diffractive input coupler on an input end of the IR light path downstream of the MEMS projector diffracts at least a portion of the IR light. At least one diffractive output coupler positioned in the IR light path downstream of the diffractive input coupler receives the IR light and directs the IR light toward the eye. At least one sensor is configured to receive the IR light after being reflected by the eye.
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公开(公告)号：US20190204595A1
公开(公告)日：2019-07-04
申请号：US15963769
申请日：2018-04-26
Applicant: Microsoft Technology Licensing, LLC
Inventor： Tuomas Heikki Sakari Vallius , Richard Andrew Wall , Dmitry Reshidko , Heikki Juhana Hyvarinen
CPC classification number: G02B27/0081 , G02B13/18 , G02B27/0172 , G02B27/1086 , G02B27/42 , G02B27/4205 , G02B2027/0125 , G02B2027/0174 , G06T19/006
Abstract: Examples are disclosed that relate to a display device. One example provides a display device comprising a projector and a pre-expander optic configured to replicate an exit pupil of the projector in at least a first direction, the pre-expander optic comprising a plurality of spectrally-selective pupil-replicating elements to form at least two exit pupils at different spatial locations, each exit pupil being for a different spectral band. The display device further comprises a waveguide comprising at least two incoupling pupils, each incoupling pupil configured to receive light from a corresponding exit pupil of the pre-expander optic, and the waveguide configured to replicate each corresponding exit pupil in at least a second direction and output the light received toward an eyebox.
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公开(公告)号：US12019246B2
公开(公告)日：2024-06-25
申请号：US18350133
申请日：2023-07-11
Applicant: Microsoft Technology Licensing, LLC
Inventor： Robert Thomas Held , Bernard Charles Kress , Ashley Saulsbury , Dmitry Reshidko
CPC classification number: G02B27/0172 , G02B27/0093 , G02C7/081 , G02B2027/0174 , G02B2027/0178 , G02B2027/0194 , G02C2202/24
Abstract: Variable-focus lenses are arranged as a lens pair that work on opposite sides of a see-through optical combiner used in a mixed-reality head-mounted display (HMD) device. An eye-side variable-focus lens is configured as a negative lens over an eyebox of the see-through optical combiner to enable virtual-world objects to be set at a close distance. The negative lens is compensated by its conjugate using a real-world-side variable-focus lens configured as a positive lens to provide an unperturbed see-through experience. For non-presbyopes, the powers of the lenses are perfectly offset. For presbyopes, the lens powers is mismatched at times to provide simultaneous views of both virtual-world and real-world objects on the display in sharp focus. Responsively an eye tracker indicating that the user is engaged in close viewing, optical power is added to the real-world-side lens to push close real-world objects optically farther away into sharp focus for the presbyopic user.
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公开(公告)号：US11768375B2
公开(公告)日：2023-09-26
申请号：US17465907
申请日：2021-09-03
Applicant: Microsoft Technology Licensing, LLC
Inventor： Robert Thomas Held , Bernard Charles Kress , Ashley Saulsbury , Dmitry Reshidko
CPC classification number: G02B27/0172 , G02B27/0093 , G02C7/081 , G02B2027/0174 , G02B2027/0178 , G02B2027/0194 , G02C2202/24
Abstract: Variable-focus lenses are arranged as a lens pair that work on opposite sides of a see-through optical combiner used in a mixed-reality head-mounted display (HMD) device. An eye-side variable-focus lens is configured as a negative lens over an eyebox of the see-through optical combiner to enable virtual-world objects to be set at a close distance. The negative lens is compensated by its conjugate using a real-world-side variable-focus lens configured as a positive lens to provide for an unperturbed see-through experience. For non-presbyopes, the powers of the lenses are perfectly offset. For presbyopes, the lens powers may be mismatched at times to provide simultaneous views of both virtual-world and real-world objects on the display in sharp focus. Responsively an eye tracker indicating that the user is engaged in close viewing, optical power is added to the real-world-side lens to push close real-world objects optically farther away and into sharp focus for the presbyopic user.
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公开(公告)号：US11716456B2
公开(公告)日：2023-08-01
申请号：US17326965
申请日：2021-05-21
Applicant: Microsoft Technology Licensing, LLC
Inventor： Michael Edward Samples , Dmitry Reshidko , Rayna Demaster-Smith
IPC: G09G5/00 , H04N13/327 , H04N13/344 , H04N13/363 , H04N9/31
CPC classification number: H04N13/327 , H04N9/3164 , H04N9/3194 , H04N13/344 , H04N13/363
Abstract: A near-eye display device comprises right and left display projectors, expansion optics, and inertial measurement units (IMUs), in addition to a plurality of angle-sensitive pixel (ASP) elements and a computer. The right and left expansion optics are configured to receive respective display images from the right and left display projectors and to release expanded forms of the display images. The right IMU is fixedly coupled to the right display projector, and the left IMU is fixedly coupled to the left display projector. Each ASP element is responsive to an angle of light of one of the respective display images as received into the right or left expansion optic. The computer is configured to receive output from the right IMU, the left IMU and the plurality of ASP elements, and render display data for the right and left display projectors based in part on the output.
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