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公开(公告)号：US12276792B2
公开(公告)日：2025-04-15
申请号：US17854825
申请日：2022-06-30
Applicant: GOOGLE LLC
Inventor： Syed Moez Haque , Shreyas Potnis , Ali Karbasi , Timothy Paul Bodiya , Daniel Adema , Ian Andrews
Abstract: A head-mounted display (HMD) system includes a lens element supported by a support structure. The lens element includes a waveguide that includes an incoupler, an outcoupler, and an exit pupil expander. The incoupler is disposed within a first area of the waveguide. The outcoupler is disposed within a second area of the waveguide. The exit pupil expander is disposed within a third area of the waveguide. An anti-reflection coating is formed via fabrication used to form the incoupler, the outcoupler, and the exit pupil expander. The anti-reflection coating is disposed within a fourth area of the waveguide different than the first, second, and third areas of the waveguide.
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公开(公告)号：US20250102802A1
公开(公告)日：2025-03-27
申请号：US18728294
申请日：2022-07-19
Applicant: GOOGLE LLC
Inventor： Daniel Adema , Timothy Paul Bodiya
Abstract: The present disclosure describes techniques and waveguides for efficiently incoupling light of different optical characteristics at multiple incouplers in a waveguide. The waveguide includes a first incoupler to incouple light with a first optical characteristic, a second incoupler to incouple light with a second optical characteristic, and a first structure at an interface of the second incoupler to reflect light with the first optical characteristic within the waveguide.
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公开(公告)号：US12080204B2
公开(公告)日：2024-09-03
申请号：US17913043
申请日：2020-12-14
Applicant: GOOGLE LLC
Inventor： Stuart James Myron Nicholson , Timothy Paul Bodiya , Daniel Adema , Shreyas Potnis
CPC classification number: G09G3/002 , G02B27/01 , G02B27/017 , G02B27/0179 , G02B27/026 , G02B27/0988 , G02B27/1066 , G09G2320/043 , G09G2320/0626 , G09G2320/066 , G09G2330/021 , G09G2330/045 , G09G2340/0464 , G09G2360/144
Abstract: A display system varies a size of a field of view area of a display for augmented reality (AR) applications based on at least one of ambient light in the environment and content displayed at the display and varying a brightness level of the field of view area such that the brightness level within the field of view area is inversely proportional to the field of view area. Based on an amount of ambient light detected in the environment of the display system, the display system adjusts the size of the area of the field of view of the display in inverse proportion to the amount of detected ambient light. As the size of the field of view area decreases, the display system increases the brightness level of the display within the field of view such that the brightness level is approximately inversely proportional to the field of view area.
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公开(公告)号：US11892649B2
公开(公告)日：2024-02-06
申请号：US18297372
申请日：2023-04-07
Applicant: Google LLC
Inventor： Daniel Adema , Timothy Paul Bodiya
CPC classification number: G02B27/0179 , G02B6/0055 , G02B6/0056 , G02B27/0172 , G06F3/013 , G09G3/002 , G02B2027/0178 , G02B2027/0187 , G09G2354/00
Abstract: Improved systems ensuring an accuracy of eye gaze measurements in an augmented reality head-mounted wearable device include a radiation direction rerouter (e.g., a partial retroreflector) configured to adjust an angle of incidence of the radiation in the waveguide at a first surface of a waveguide to produce radiation directed at an adjusted angle of incidence at an outcoupler such that the output direction is essentially parallel to the gaze angle of the user's eye. For example, a partial retroreflector may be disposed on a surface of the waveguide opposite the outcoupler provides an additional reflection so that the gaze angle of the user's eye is matched to an angle of an image of the eye pupil onto a world-facing radiation detector (e.g., a camera).
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公开(公告)号：US20230296822A1
公开(公告)日：2023-09-21
申请号：US17695995
申请日：2022-03-16
Applicant: GOOGLE LLC
Inventor： Shreyas Potnis , Timothy Paul Bodiya , Dan Adema
CPC classification number: G02B6/005 , G02B26/101 , G02B26/0816
Abstract: A system includes a feedback loop that includes a light engine to generate light, a light engine controller to control operation of the light engine, a scanning device to scan a light beam across a range of scan angles to an incoupler of a waveguide, a photo-sensor to measure an amount of light outcoupled through the incoupler of the waveguide at the range of incident angles. The light engine controller adjusts one or more of a pulse duration, a phase, or a pulse frequency of the scanned light, based on an incident angle of the scanned light and the measured amount of light.
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Patent Agency Ranking
公开(公告)号：US11747585B2
公开(公告)日：2023-09-05
申请号：US17012369
申请日：2020-09-04
Applicant: GOOGLE LLC
Inventor： Timothy Paul Bodiya , Daniel Robert Adema , Syed Moez Haque , Andrew S. Logan , Dwayne Wasylyshyn
CPC classification number: G02B7/02 , G02B27/0172 , G02B2027/0178
Abstract: An optical combiner includes a lightguide having an input region, an output region, a relay region intermediate between the input region and the output region, and one or more stress raisers positioned to define a line of weakness in the lightguide. The line of weakness is intermediate between the input region and the output region and extends across the relay region. An in-coupler is disposed at the input region to receive an incident light with a field of view and couple the incident light into the lightguide. An out-coupler is disposed at the output region to couple light out of the lightguide. The optical combiner may be integrated with one or more lenses for use as a combiner lens in a wearable heads-up display.
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公开(公告)号：US20230152593A1
公开(公告)日：2023-05-18
申请号：US18150982
申请日：2023-01-06
Applicant: GOOGLE LLC
Inventor： Stuart James Myron Nicholson , Timothy Paul Bodiya
CPC classification number: G02B27/0172 , G02B6/0023 , G02B6/005 , G02C11/10 , G02B26/0816
Abstract: A wearable heads-up display includes a power source, laser sources, and a lightguide. A photodetector is positioned to detect an intensity of a test light emitted at a perimeter of the lightguide from an optical path within the lightguide. A laser safety circuit provides a control to reduce or shut off a supply of electrical power from the power source to the laser sources in response to an output signal from the photodetector indicating that the detected intensity is below a threshold.
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公开(公告)号：US11630318B2
公开(公告)日：2023-04-18
申请号：US16737322
申请日：2020-01-08
Applicant: GOOGLE LLC
Inventor： Shreyas Potnis , Timothy Paul Bodiya
Abstract: There is provided an optical element which includes a medium including a diffractive optical element (DOE). The medium is to receive a beam of light via a light guide. If the beam is incident upon the medium at an incidence angle within a first range of angles, the DOE is to direct a first portion of the beam out of the light guide along a second direction to form an outcoupled beam, and cause a second portion of the beam to propagate towards a surface of the light guide. Furthermore, if the incidence angle is within a second range of angles, the DOE is to split from the beam a third portion and a fourth portion each propagating towards the surface of the light guide. The third and fourth portions are to propagate along a third and a fourth direction respectively, which third direction is different than the fourth direction.
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公开(公告)号：US20230003953A1
公开(公告)日：2023-01-05
申请号：US17854825
申请日：2022-06-30
Applicant: GOOGLE LLC
Inventor： Syed Moez Haque , Shreyas Potnis , Ali Karbasi , Timothy Paul Bodiya , Daniel Adema , Ian Andrews
Abstract: A head-mounted display (HMD) system includes a lens element supported by a support structure. The lens element includes a waveguide that includes an incoupler, an outcoupler, and an exit pupil expander. The incoupler is disposed within a first area of the waveguide. The outcoupler is disposed within a second area of the waveguide. The exit pupil expander is disposed within a third area of the waveguide. An anti-reflection coating is formed via fabrication used to form the incoupler, the outcoupler, and the exit pupil expander. The anti-reflection coating is disposed within a fourth area of the waveguide different than the first, second, and third areas of the waveguide.
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公开(公告)号：US20220299772A1
公开(公告)日：2022-09-22
申请号：US17635858
申请日：2020-08-17
Applicant: GOOGLE LLC
Inventor： Jackie Lynn Mills , Shreyas Potnis , Timothy Paul Bodiya , Stefan Alexander
Abstract: A waveguide including at least a first photopolymer layer and a second photopolymer layer having a barrier layer therebetween and a first transparent layer and second transparent layer overlaying the first and second photopolymer layers, respectively. The waveguide can further include at least one holographic incoupler and at least one holographic outcoupler, each configured to be responsive to light within a first waveband and unresponsive to light outside of the first waveband, and further configured to be transmissive or reflective.
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