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

IPC: G02B27/01 ,  G02B27/28 ,  H04N9/31

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.

公开(公告)号：US20250147330A1

公开(公告)日：2025-05-08

申请号：US18502301

申请日：2023-11-06

Applicant: GOOGLE LLC

Inventor： Ravi Kumar Komanduri ,  Oleg Yaroshchuk ,  Shreyas Potnis ,  Michael Anthony Klug

IPC: G02B27/28

Abstract: A time-division multiplexed projection display is pixel shifted to produce an increased perceived display resolution. 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 at a user's eye.

公开(公告)号：US12244786B2

公开(公告)日：2025-03-04

申请号：US17558415

申请日：2021-12-21

Applicant: GOOGLE LLC

Inventor： Michael Anthony Klug ,  Gang He ,  Richard Schneider ,  James Richard Dodd ,  Craig Peters

IPC: H04N13/365 ,  G02B30/27 ,  H04N13/305 ,  H04N13/383

Abstract: A display device based on micro light emitting diodes (microLEDs) includes a plurality of chiplets. Each chiplet includes one or more raxels, each raxel including a plurality of microLEDs supported on a substrate. The chiplet also includes a micro integrated circuit (microIC) electronically connected with the one or more raxels. MicroIC includes a plurality of interconnects supported on a backplane such that, when connected with the raxel, microIC may be used to electrically drive each one of the MicroLED of the raxel. In an embodiment, a plurality of chiplets are disposed on a display substrate to for an auto-view horizontal parallax only 3D display.

公开(公告)号：US20230221479A1

公开(公告)日：2023-07-13

申请号：US18154691

申请日：2023-01-13

Applicant: Google LLC

Inventor： Michael Anthony Klug ,  Bradley Jay Sissom

IPC: F21V8/00 ,  G02B27/01 ,  G02B3/00 ,  G02B13/00

CPC classification number: G02B6/003 ,  G02B27/0172 ,  G02B3/0037 ,  G02B13/0095 ,  G02B2027/0178

Abstract: In a general aspect, a wearable display system includes a microlens array projector including a plurality of elemental microlens relays (EMRs). Each EMR of the plurality of EMRs includes a microLED microdisplay including a plurality of pixels, and is configured to generate a subset of light associated with an image. Each EMR also includes a microlens configured to receive the subset of light from the microdisplay. The system also includes a lightguide, an incoupling element optically coupled with the lightguide, and an outcoupling element optically coupled with the lightguide. The microlens is configured to relay the subset of light to the incoupling element. The incoupling element is configured to incouple the subset of light into the lightguide. The outcoupling element is configured to outcouple portions of the subset of light at a plurality of respective locations along the lightguide, where outcoupled light of the plurality of EMRs represents the image.