-
公开(公告)号：US11662579B2
公开(公告)日：2023-05-30
申请号：US16898773
申请日：2020-06-11
Applicant: GOOGLE LLC
Inventor： Shreyas Potnis , Kevin Orr , Kai Xu
CPC classification number: G02B27/0149 , G01R15/04 , G01R19/10 , G01R27/26 , G01R31/52 , G02B6/0083 , G02B2027/0167
Abstract: A combiner lens system includes a lens and a lightguide in stack with the lens. The lightguide carries one or more electrically conductive traces. A detector circuit is electrically coupled to the one or more electrically conductive traces to form an electrical circuit. The detector circuit monitors the electrical circuit for an open circuit or a short circuit and generates an output signal that is indicative of a state of the electrical circuit.
-
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.
-
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.
-
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.
-
公开(公告)号：US20250130432A1
公开(公告)日：2025-04-24
申请号：US18921164
申请日：2024-10-21
Applicant: Google LLC
Inventor： Daniel Adema , Shreyas Potnis
IPC: G02B27/01
Abstract: According to an aspect, a method includes identifying a lens pitch associated with a wafer. The method further includes determining a projector pitch for a first projector and a second projector on the wafer based on the lens pitch. The method also includes selecting a portion of the wafer for a device based on the projector pitch.
-
Patent Agency Ranking
公开(公告)号：US20240103270A1
公开(公告)日：2024-03-28
申请号：US17769019
申请日：2020-11-04
Applicant: GOOGLE LLC
Inventor： Shreyas Potnis , Timothy Paul Bodiya
CPC classification number: G02B27/0172 , G02B27/4272 , G02B2027/0178
Abstract: Systems, devices, and methods for directing display light employ one or more optical combiners that include recycle optics such as diffraction gratings, which can receive wasted display light travelling in a volume of an optical combiner, and redirect the wasted display light towards other optics so the wasted display light may be effectively used to produce a display. The optical combiners may also include a uniformization optic which can redistribute non-uniform display light, to produce a more uniform display, which in turn enables higher efficiency optics to be used.
-
公开(公告)号：US20230359050A1
公开(公告)日：2023-11-09
申请号：US18141674
申请日：2023-05-01
Applicant: GOOGLE LLC
Inventor： Eliezer Glik , Shreyas Potnis
CPC classification number: G02B27/0944 , G02B1/02 , G02B27/0172 , G02B2027/0178
Abstract: To increase the field of view and/or the wavelengths of light (i.e., color bandwidth) transmitted by a waveguide without using high-index resin, some embodiments include a waveguide grating formed on a substrate that is imprinted with a relatively low-index resin and a conformal coating having a relatively high refractive index. In some embodiments, the substrate is imprinted with the resin using nano imprint lithography and the residual layer thickness of the resin layer is minimized. The conformal coating conforms to the geometry of the surface it coats with a substantially uniform thickness.
-
公开(公告)号：US11526012B2
公开(公告)日：2022-12-13
申请号：US16738056
申请日：2020-01-09
Applicant: GOOGLE LLC
Inventor： Timothy Paul Bodiya , Shreyas Potnis
Abstract: There is provided a method of operating a wearable heads-up display, which display includes a light source, a light guide, and an incoupler carried by the light guide. The method includes emitting first and second beams having first and second wavelengths respectively, directing the first and second beams towards the incoupler, and directing, by the incoupler, at least a portion of the first and second beams into the light guide. Moreover the method includes internally reflecting, by the light guide, the portions of the first and second beams to form first and second reflected beams respectively. The first and second beams respectively may have first and second incoupling losses. Furthermore, the method includes adjusting a beam characteristic of at least one of the first and second beams to control a difference between their respective incoupling losses.
-
公开(公告)号：US20220299768A1
公开(公告)日：2022-09-22
申请号：US17481683
申请日：2021-09-22
Applicant: GOOGLE LLC
Inventor： Timothy Paul Bodiya , Shreyas Potnis , Daniel Adema , Ian Andrews
Abstract: A head-mounted display (HMD) system includes a micro-display configured to project light beams, each of light beams encompassing a range of wavelengths different from each of the other light beams, and a waveguide having multiple incouplers configured to receive and direct light into the waveguide. Each of the incouplers is a diffraction grating with a fill factor different from each of the other incouplers. In some embodiments, each of the incouplers has a different period value from each of the other incouplers and the period value of each of the incouplers is based on the range of wavelengths of light each of the incouplers is configured to receive.
-
公开(公告)号：US20220299764A1
公开(公告)日：2022-09-22
申请号：US17204451
申请日：2021-03-17
Applicant: GOOGLE LLC
Inventor： Daniel Adema , Timothy Paul Bodiya , Shreyas Potnis
Abstract: Systems and methods to reduce light loss from a waveguide. The system includes a waveguide having an incoupler to direct light into the waveguide and a laser projector having laser diodes mounted to a substrate. The laser projector is configured to provide a plurality of laser light beams to the incoupler of the waveguide. The system further includes at least one alignment component configured to align the plurality of laser light beams tangent with an edge of the incoupler to minimize light lost from the waveguide through contact with the incoupler more than once.
-
-
-
-
-
-
-
-
-
Search Results
42
records
(took 0.016 seconds)
