公开(公告)号：US20240126089A1

公开(公告)日：2024-04-18

申请号：US18484835

申请日：2023-10-11

申请人： GOOGLE LLC

发明人： Daniel Adema ,  Timothy Paul Bodiya

IPC分类号： G02B27/01

CPC分类号： G02B27/0172

摘要： A waveguide includes an outcoupler with a dual reflective facet configuration. The dual reflective facet configuration includes a first set of reflective facets to receive light from a first direction and reflect the light incident thereon to an outcoupling direction. The dual reflective facet configuration also includes a second set of reflective facets to receive light from a second direction and reflect the light incident thereon to the outcoupling direction.

公开(公告)号：US20240012245A1

公开(公告)日：2024-01-11

申请号：US18035563

申请日：2020-12-18

申请人： GOOGLE LLC

发明人： Daniel Adema ,  Stuart James Myron Nicholson

IPC分类号： G02B27/01

CPC分类号： G02B27/0172 ,  G02B2027/0178 ,  G02B2027/0138 ,  G02B2027/014

摘要： A head wearable apparatus, such as a pair of smart glasses are configured to track a gaze direction of a person for various applications. To support the tracking, the head wearable apparatus is configured with a lens assembly including at least one lens module (e.g., a lens or a lenslet array) operably coupled to the head wearable apparatus and a camera assembly including a camera sensor operably coupled to the head wearable apparatus. The head wearable apparatus is also configured with a camera assembly operably coupled to an anterior surface of a flexure of the head wearable apparatus (e.g., proximate to the front of the smart glasses frames) to minimize a size (e.g., to be as small as possible) of an aperture housing the camera assembly. The flexure is configured to be adjacent to the lens assembly operably coupled to the head wearable apparatus.

公开(公告)号：US20230324703A1

公开(公告)日：2023-10-12

申请号：US18297372

申请日：2023-04-07

申请人： Google LLC

发明人： Daniel Adema ,  Timothy Paul Bodiya

IPC分类号： G02B27/01 ,  F21V8/00 ,  G06F3/01 ,  G09G3/00

CPC分类号： G02B27/0179 ,  G02B27/0172 ,  G02B6/0055 ,  G02B6/0056 ,  G06F3/013 ,  G09G3/002 ,  G02B2027/0178 ,  G02B2027/0187 ,  G09G2354/00

摘要： 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).

公开(公告)号：US11782276B2

公开(公告)日：2023-10-10

申请号：US17204451

申请日：2021-03-17

申请人： GOOGLE LLC

发明人： Daniel Adema ,  Timothy Paul Bodiya ,  Shreyas Potnis

IPC分类号： G02B27/01 ,  G02B26/10 ,  F21V8/00 ,  G03B21/20

CPC分类号： G02B27/0172 ,  G02B6/0023 ,  G02B6/0068 ,  G02B26/101 ,  G03B21/2033 ,  G02B2027/0118 ,  G02B2027/0178

摘要： 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.

公开(公告)号：US20220303510A1

公开(公告)日：2022-09-22

申请号：US17208810

申请日：2021-03-22

申请人： GOOGLE LLC

发明人： Daniel Adema ,  Ian Andrews

IPC分类号： H04N9/31 ,  G02B26/10 ,  G02B27/01

摘要： 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：US20220299765A1

公开(公告)日：2022-09-22

申请号：US17204457

申请日：2021-03-17

申请人： GOOGLE LLC

发明人： Daniel Adema

IPC分类号： G02B27/01 ,  G02B26/10 ,  G02B5/30 ,  G02B27/28 ,  G02B26/08

摘要： Systems and methods for manipulation of the polarization state of light emitted by a laser projector to reduce the angle range of a scanning mirror articulated by a micro-electromechanical system MEMS to reduce power consumption are disclosed. A system includes a light source configured to emit laser light, a scanning mirror, and an angle expander disposed between the light source and the scanning mirror, the angle expander being configured to cause the laser light from the light source to be reflected at least once from the angle expander and at least twice from the scanning mirror.

公开(公告)号：US20220299758A1

公开(公告)日：2022-09-22

申请号：US17201804

申请日：2021-03-15

申请人： GOOGLE LLC

发明人： Daniel Adema ,  Sangtak Park

IPC分类号： G02B26/10 ,  G02B26/08 ,  G02B27/09 ,  F21V8/00 ,  G02B27/01

摘要： Optical systems may include MEMS mirrors having elliptical mirror plates. A laser scanning system may include a MEMS mirror that scans an incident light beam along a single scanning axis. The MEMS mirror may include an elliptical mirror plate having a semi-major axis that is aligned parallel or perpendicular to the rotational axis of the elliptical mirror plate. The incident light beam may have an elliptical cross-section, such that the incident light beam completely or substantially overlaps the reflecting surface of the elliptical mirror plate. After being reflected by the elliptical mirror plate, the light beam may be circularized via one or more shaping lenses disposed in the optical path of the reflected light beam, prior to projection of the light beam.

公开(公告)号：US20220163790A1

公开(公告)日：2022-05-26

申请号：US17530782

申请日：2021-11-19

申请人： GOOGLE LLC

发明人： Daniel Adema

IPC分类号： G02B26/10 ,  G02B27/01 ,  G02B26/08

摘要： A display system employs multiple micro-electromechanical system (MEMS) mirrors in series to receive collimated light and direct the light to provide light having input angles corresponding to a desired field of view at a point or line at an incoupler (IC) of a waveguide without an optical relay. An initial one or more MEMS mirrors accepts collimated light and generates the scan angles. A last MEMS mirror in the series scans at a range of angles proportional to the scan angles generated by the initial MEMS mirror(s) and directs the scanned light back to a spot or a line at the IC.