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：US20240087488A1

公开(公告)日：2024-03-14

申请号：US18462253

申请日：2023-09-06

Applicant: Google LLC

Inventor： Shreyas Potnis ,  Eliezer Glik ,  Daniel Adema

IPC: G09G3/00

CPC classification number: G09G3/002 ,  G09G2320/0693 ,  G09G2340/0471 ,  G09G2340/12

Abstract: Improved techniques include providing a coupling element on a nose bridge that can overlay left and right images output from respective outcouplers and send the overlay image to a sensor. Based on at least a portion of the overlay image, the sensor may cause the left, right, or both field of views to move until the left and right images are aligned.

公开(公告)号：US11789274B2

公开(公告)日：2023-10-17

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

IPC: G02B5/32 ,  G09G5/00 ,  G02B27/01 ,  H04N9/31 ,  G02B27/00 ,  G09G5/10

CPC classification number: G02B27/0172 ,  G02B27/0093 ,  G09G5/10 ,  H04N9/3155 ,  G02B2027/0178 ,  G09G2360/144

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.

公开(公告)号：US20230215304A1

公开(公告)日：2023-07-06

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

IPC: G09G3/00

CPC classification number: G09G3/002 ,  G09G2320/066 ,  G09G2320/0626 ,  G09G2320/043 ,  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.

公开(公告)号：US11567322B2

公开(公告)日：2023-01-31

申请号：US16670284

申请日：2019-10-31

Applicant: GOOGLE LLC

Inventor： Jackie Lynn Mills ,  Shreyas Potnis ,  Timothy Paul Bodiya

IPC: G02B27/01 ,  G06F3/01 ,  G03H1/02 ,  F21V8/00 ,  G06F1/16 ,  G02B27/00

Abstract: Systems, devices, and methods for expanding the eyebox of a wearable heads-up display are described. A light guide with an expanded eyebox includes a light guide material, an in-coupler, an outcoupler, and a gradient refractive index (GRIN) material. The in-coupler and the out-coupler may comprise a GRIN material. An eyeglass lens with expanded eyebox includes a light guide with expanded eyebox. A wearable heads-up display includes an eyeglass lens including a light guide with an expanded eyebox.

公开(公告)号：US20220197035A1

公开(公告)日：2022-06-23

申请号：US17552721

申请日：2021-12-16

Applicant: GOOGLE LLC

Inventor： Daniel Adema ,  Timothy Paul Bodiya ,  Shreyas Potnis

IPC: G02B27/01 ,  F21V8/00

Abstract: A head-mounted display (HMD) system including a lens element supported by a support structure, the lens element having a waveguide with an incoupler configured to receive light from an optical scanner of the HMD. The incoupler is configured with multiple features varying in at least one of height, spacing, angle, or density. The features may be separated into discrete zones along the incoupler such that at least one of height, spacing, angle, or density of the plurality of features is varied over the incoupler and constant within a given zone or the features may be varied continuously across the incoupler.

公开(公告)号：US11282540B2

公开(公告)日：2022-03-22

申请号：US16738230

申请日：2020-01-09

Applicant: GOOGLE LLC

Inventor： Shreyas Potnis ,  Jackie Lynn Mills ,  Timothy Paul Bodiya

IPC: G03H1/02 ,  G11B7/0065 ,  G02B5/32 ,  G03H1/26 ,  G03H1/04

Abstract: There are provided holographic optical elements (HOEs) and methods of making the same. An example of such methods includes recording a first hologram in a contiguous holographic recording medium of the HOE. The first hologram may receive a beam of light and direct at least a portion of the beam into a light guide to form an incoupled beam. The method also includes recording a second hologram in the contiguous holographic recording medium. The second hologram may receive at least a portion of the incoupled beam and direct the portion of the incoupled beam out of the light guide to form an outcoupled beam. In addition, the method includes affixing the holographic recording medium to the light guide.

公开(公告)号：US20210215868A1

公开(公告)日：2021-07-15

申请号：US17145364

申请日：2021-01-10

Applicant: GOOGLE LLC

Inventor： Daniel Adema ,  Ian Andrews ,  Timothy Paul Bodiya ,  Shreyas Potnis

IPC: F21V8/00

Abstract: An optical element for implementation in a heads-up display or other near-eye display system includes a lightguide and an incoupler optically coupled to the lightguide. The incoupler receives a display beam incident upon the lightguide at a first incidence position. The incoupler directs a first portion of the display beam into the lightguide to form an incoupled beam and causes a second portion to remain non-incoupled relative to the lightguide to form a non-incoupled beam. The optical element further includes a reflector to receive the non-incoupled beam and to reflect the non-incoupled beam towards the incoupler to form a reflected beam incident upon the incoupler at a second incidence position. The incoupler direct a corresponding portion of the reflected beam into the lightguide to form a further incoupled beam.

公开(公告)号：US12259552B2

公开(公告)日：2025-03-25

申请号：US17552721

申请日：2021-12-16

Applicant: GOOGLE LLC

Inventor： Daniel Adema ,  Timothy Paul Bodiya ,  Shreyas Potnis

IPC: G02B27/01 ,  F21V8/00

Abstract: A head-mounted display (HMD) system including a lens element supported by a support structure, the lens element having a waveguide with an incoupler configured to receive light from an optical scanner of the HMD. The incoupler is configured with multiple features varying in at least one of height, spacing, angle, or density. The features may be separated into discrete zones along the incoupler such that at least one of height, spacing, angle, or density of the plurality of features is varied over the incoupler and constant within a given zone or the features may be varied continuously across the incoupler.

公开(公告)号：US20250093568A1

公开(公告)日：2025-03-20

申请号：US18728360

申请日：2022-07-21

Applicant: GOOGLE LLC

Inventor： Daniel Adema ,  Shreyas Potnis ,  Timothy Paul Bodiya

IPC: F21V8/00

Abstract: The present disclosure describes techniques for reflecting light incoupled into a waveguide in a direction away from the outcoupler back toward the outcoupler. The waveguide includes an incoupler to incouple light of a first polarization state, and a reflective structure to receive incoupled light of the first polarization state and reflect it with a second polarization state toward the outcoupler. The reflective structure is on an opposite side of the incoupler as the outcoupler. In some embodiments, a polarization beam splitter or other polarization-selective layer is included at an interface of the incoupler and a waveguide substrate of the waveguide to transmit light of the first polarization state and reflect light of the second polarization state.