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公开(公告)号：US20240329405A1
公开(公告)日：2024-10-03
申请号：US18620454
申请日：2024-03-28
Applicant: Google LLC
Inventor： Daniel Adema , Shreyas Potnis
CPC classification number: G02B27/0172 , G02B13/0085 , G02B2027/0138 , G02B2027/0178
Abstract: Various configurations of projectors and cameras are disclosed that use shared wafer level optics, in which optical elements, e.g., microlenses, of a projector are fabricated on the same wafer as optical elements, e.g., microlenses, of a camera. Projectors and cameras can be mounted together on a mixed reality headset, e.g., an AR/VR headset, for example, as a feature of smart glasses. Some projectors and/or cameras can be co-located in the arm or temple of the glasses. Some projectors and/or cameras can be co-located near a center point of the frame of the glasses. Use of shared wafer-level optics provides a compact and efficient solution for simultaneously guiding light leaving a projector and light entering a camera.
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22.发明公开公开(公告)号：US20240118478A1
公开(公告)日：2024-04-11
申请号：US17963816
申请日：2022-10-11
Applicant: GOOGLE LLC
Inventor： Jamie Elizabeth Kowalski , Shreyas Potnis , Rhys Anderson , Kirill Afanasev , Eliezer Glik , Timothy Paul Bodiya , Victor Isbrucker
CPC classification number: G02B6/0055 , G02B27/0172 , G02B2027/0123 , G02B2027/0174 , G02B2027/0178
Abstract: A waveguide including first and second sections has a first molded optic material forming a portion of the geometry of one or more Bragg gratings disposed on one surface of the first section of the waveguide. Similarly, a second molded optic material forming another portion of the geometry of one or more Bragg gratings is disposed on one surface of the second section of the waveguide. Further, a photopolymer material is deposited on the first molded optic material. As the first and second sections are coupled, a waveguide is formed with a layer of photopolymer material disposed in the waveguide with the layer of photopolymer material having a geometry defined by the first and second molded optic materials. Bragg grating holograms are then recorded in the layer of photopolymer material, resulting in a waveguide with a plurality of Bragg gratings.
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公开(公告)号：US20220342221A1
公开(公告)日：2022-10-27
申请号：US17747444
申请日：2022-05-18
Applicant: GOOGLE LLC
Inventor： Timothy Paul Bodiya , Shreyas Potnis , Stuart James Myron Nicholson , Bergen Fletcher
Abstract: There is provided a method of operating a wearable heads-up display (WHUD). The WHUD may include a light source, a spatial modulator, and a display optic. The method may include generating, by the light source, an output light to form an image viewable by a user of the WHUD. The method may also include receiving a position of a pupil of the user relative to an eyebox of the WHUD, and obtaining an image correction map based on the position of the pupil. Moreover, the method may include adjusting the output light to form an adjusted output light. The adjusted output light may be adjusted based on the image correction map to reduce at least one of an intensity non-uniformity and a color balance non-uniformity of the image. The method may also include directing, by the display optic, the adjusted output light into a field of view of the user.
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公开(公告)号：US20220299711A1
公开(公告)日：2022-09-22
申请号：US17481671
申请日：2021-09-22
Applicant: GOOGLE LLC
Inventor： Timothy Paul Bodiya , Shreyas Potnis , Syed Moez Haque
Abstract: Improving the performance and efficiency of waveguide gratings while also improving the anti-reflection performance of the waveguide can be achieved by selective application of a dielectric anti-reflective coating (or coatings) to distinct regions of the waveguide. For example, a multi-layer dielectric anti-reflective coating is selectively applied to the region of the waveguide between an exit pupil expander grating and an outcoupler grating wherein light is transmitted within the waveguide via instances of total internal reflection (TIR) and where no gratings are typically present. By selectively excluding the regions of the waveguide containing gratings from receiving the anti-reflective coating, such as the incoupler and outcoupler regions, the performance of the gratings can be improved for their respective functions without compromising the anti-reflection performance of the waveguide overall.
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公开(公告)号：US20250147317A1
公开(公告)日：2025-05-08
申请号：US18949951
申请日：2024-11-15
Applicant: GOOGLE LLC
Inventor： Oleg Yaroshchuk , Ravi Kumar Komanduri , Shreyas Potnis , Michael Anthony Klug , Christopher Charles Townsend , Zheng Qin , Xinda Hu , Scott Fullam
Abstract: A time-division multiplexed projection display is pixel shifted to produce an increased perceived display resolution or to mitigate image defects, such as defects in a display, a waveguide, or a prism, in an augmented, mixed, or virtual reality device. A polarizing beam splitter (PBS) divides input unpolarized display light into two orthogonal linear polarizations and directs them to two PBS arms. The PBS arms act to shift the light in synchronization with the time-multiplexed display such that a single pixel of the light engine providing the display light is converted into two or four virtual pixels, effectively increasing the perceived display resolution relative to the native resolution of the light engine. The PBS combines the light from both PBS arms into a single, unpolarized output that may then be projected into a lens or a waveguide incoupler to enable the light to propagate through a waveguide for display.
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Patent Agency Ranking
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：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.
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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：US20240078944A1
公开(公告)日：2024-03-07
申请号：US18462262
申请日：2023-09-06
Applicant: Google LLC
Inventor： Daniel Adema , Shreyas Potnis , Eliezer Glik
CPC classification number: G09G3/007 , G02B27/0172 , G02B2027/0121 , G02B2027/0178 , G09G2320/0693
Abstract: Improved techniques of detecting angular misalignment between a display and a waveguide of a smartglasses device includes providing a detection mechanism for the display such that the location of a misalignment can indicate how to compensate for the misalignment.
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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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