-
公开(公告)号：US20250004289A1
公开(公告)日：2025-01-02
申请号：US18697661
申请日：2022-09-29
Applicant: Google LLC
Inventor： Aurelien Jean Francois David , Benjamin Wales , Bergen Albert Fletcher , Daniel Adema , Daniel J. Effinger , Vance R. Morrison , Patrick F. Brinkley , Ian Andrews , Stuart James Myron Nicholson , Shreyas Potnis
Abstract: A display system includes one or more low-power laser diodes, each producing an emission. The emissions are directed to an optical element that affects the direction or divergence of the emissions. The optical element redirects the emissions toward a steering element such as a MEMS-actuated mirror, or a combination of such mirrors. The steering element directs the emissions toward the incoupler of a waveguide acting as an optical combiner. The emissions propagate through the waveguide and are extracted by an outcoupler in the direction of an observer. By scanning the direction of the beam-steering element along one or several directions, an image may be formed.
-
公开(公告)号：US20230015702A1
公开(公告)日：2023-01-19
申请号：US17374078
申请日：2021-07-13
Applicant: GOOGLE LLC
Inventor： Daniel Adema , Ian Andrews
Abstract: Display systems, such as near eye display systems or wearable heads up displays, may include a laser projection system having an optical engine and an optical scanner. Light output by the optical engine may be directed into the optical scanner as two angularly separated laser light beams. The angularly separated laser light beams typically have different angles of incidence on a second scan mirror of the optical scanner. Respectively different levels of magnification are applied to the beam diameter of each of the angularly separated laser light beams in a first dimension, such that the angularly separated laser light beams have respectively different beam diameters upon incidence at the second scan mirror. In some embodiments, the different beam diameters of the angularly separated laser light beams result in regions of incidence of each of the angularly separated laser light beams on the second scan mirror being equal or substantially similar.
-
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：US20220326537A1
公开(公告)日：2022-10-13
申请号：US17764657
申请日：2021-01-08
Applicant: GOOGLE LLC
Inventor： Daniel Adema , Ian Andrews
Abstract: There is provided an optical element including a light guide, an incoupler, and a beam splitter disposed in an optical path of a display beam between the incoupler and a light engine to generate the display beam. The display beam may comprise first and second beams. The beam splitter may split the display beam to form a first offspring beam including the first beam and a first portion of the second beam, and to form a second offspring beam including a second portion of the second beam. The first and second offspring beams may be incident upon the incoupler at first and second incidence positions respectively. The first incidence position may be different than the second incidence position. The incoupler may direct at least a portion of each of the first and second offspring beams into the light guide to form incoupled first and second offspring beams respectively.
-
Patent Agency Ranking
15.发明申请公开(公告)号：US20250020932A1
公开(公告)日：2025-01-16
申请号：US18884710
申请日：2024-09-13
Applicant: GOOGLE LLC
Inventor： Daniel Adema , Stuart James Myron Nicholson , Ian Andrews
Abstract: A laser projection system utilizes a waveguide having a narrow incoupler for double-bounce mitigation and form factor reduction. An optical scanner includes an optical relay positioned in between two scan mirrors. The first scan mirror scans laser light into the optical relay in a first dimension, and the optical relay and converges the scanned laser light towards a second scan mirror. The second scan mirror scans laser light along a second dimension substantially perpendicular to a path over which the laser light is scanned across the second scan mirror, and the convergence introduced by the optical relay causes the laser light to be scanned as a line or arc path of an exit pupil plane that is coincident with the incoupler. The optical relay may include one or more lenses or may be a monolithic molded structure, which may be an Offner-style relay or a molded reflective relay.
-
公开(公告)号：US20240319417A1
公开(公告)日：2024-09-26
申请号：US18574956
申请日：2022-06-30
Applicant: GOOGLE LLC
Inventor： Timothy Paul Bodiya , Shreyas Potnis , Daniel Adema , Ian Andrews , Syed Moez Haque
CPC classification number: G02B5/1809 , G02B5/1819 , G02B5/1842 , G02B6/124 , G02B27/0081 , G02B27/0172 , G02B2027/0178
Abstract: A head-mounted display system (100) includes a lens element (110) supported by a support structure (102). The lens element (110) includes a waveguide (212) to couple light from an image source. The waveguide (212) includes a waveguide surface (207) and a grating (250). The grating (250) is disposed onto the waveguide surface (207) and includes rows of three-dimensional, 3D, primitive structures (435), with a height of the 3D primitive structures being smaller than a wavelength of visible incident light at a surface of the sub-wavelength grating.
-
公开(公告)号：US20220303510A1
公开(公告)日：2022-09-22
申请号：US17208810
申请日：2021-03-22
Applicant: GOOGLE LLC
Inventor： Daniel Adema , Ian Andrews
Abstract: Display systems, such as near eye display systems or wearable heads up displays, may include a laser projection system having an optical engine and an optical scanner. Light output by the optical engine may be directed into the optical scanner as two angularly separated laser light beams. The angularly separated laser light beams may overlap at an entrance pupil plane along a first dimension at a first scan mirror of the optical scanner, or at a location between the first scan mirror and an optical relay of the optical scanner. The angularly separated laser light beams may overlap at an exit pupil plane along the first dimension at a second scan mirror of the optical scanner or at an incoupler of the laser projection system.
-
公开(公告)号：US20220268970A1
公开(公告)日：2022-08-25
申请号：US17205410
申请日：2021-03-18
Applicant: GOOGLE LLC
Inventor： Brian Watson Cranton , Darren Edward Ihmels , Ian Andrews , Lloyd Frederick Holland
Abstract: Systems, devices, and assemblies for implementing multi-focal lens portions in wearable heads-up displays are described. Multi-focal lens portions may include at least two regions having different optical power, and at least one transition region between regions having different optical power. If display light is directed through a transition region, aberrations or distortion may be visible in the display presented to the user. The present systems, devices, and assemblies address this issue through shaping, positioning, and orienting of regions of a multi-focal lens portion, through positioning, orientation, and aiming of display optics, and/or through arrangements of lens assemblies which prevent display light from travelling through a multi-focal lens portion.
-
公开(公告)号：US11002966B2
公开(公告)日：2021-05-11
申请号：US15970631
申请日：2018-05-03
Applicant: GOOGLE LLC
Inventor： Ian Andrews , Joshua Moore
Abstract: Systems, devices, and methods for eyebox expansion in wearable heads-up displays (WHUD) are described. A WHUD includes a support structure, a scanning laser projector (SLP), a split mirror, an optical splitter, and a holographic combiner. When the WHUD is worn on the head of a user the holographic combiner is positioned in a field of view of the user. The SLP scans light signals onto the split mirror which reflects the light signals onto the optical splitter. The optical splitter redirects the light signals towards the holographic combiner such that subsets of the light signals originate from spatially-separated virtual positions. The holographic combiner redirects the light to the eye resulting in spatially-separated exit pupils. The spatial separation of the exit pupils results in an expanded eyebox. The indirect path of light from SLP to optical splitter enables a smaller and therefore more aesthetically desirable design for the WHUD.
-
-
-
-
-
-
-
-
Search Results
19
records
(took 0.017 seconds)
