公开(公告)号：US20240427150A1

公开(公告)日：2024-12-26

申请号：US18706542

申请日：2022-11-04

Applicant: GOOGLE LLC

Inventor： Ozan Cakmakci

IPC: G02B27/01 ,  G02B1/10 ,  G02B27/28

Abstract: A display system includes a microdisplay and a curved light-guide to direct and magnify light from the microdisplay to a user's eye. The display system includes an incoupler that is thicker than the curved lightguide to couple light from the microdisplay into the curved lightguide and an out-coupler tilted at an angle to receive two bounces of display light and couple the display light out of the curved lightguide, resulting in a large eyebox. In some embodiments, the curved lightguide includes a low-index coating on a world-side surface with a gap through which side image light escapes and a sunglass coating on a lens to absorb the side image light. The curved light-guide includes a half-wave plate (HWP) to flip an input polarization for a main image to an orthogonal polarization and a dielectric mirror to act as a weak analyzer to dim side images.

公开(公告)号：US12105290B2

公开(公告)日：2024-10-01

申请号：US17471750

申请日：2021-09-10

Applicant: GOOGLE LLC

Inventor： Ozan Cakmakci ,  Eliezer Glik

IPC: G02B27/01 ,  F21V8/00 ,  G02B27/28

CPC classification number: G02B27/0172 ,  G02B6/0033 ,  G02B27/283 ,  G02B2027/013 ,  G02B2027/0178

Abstract: A head-wearable display device is configured to support a plurality of combiners (e.g., at least two combiners) to expand an eyebox associated with the head-wearable display device. The plurality of combiners may expand the pupil and the head-wearable display device may be configured to align the magnification between the plurality of combiners, such that a single magnified virtual image with an expanded eyebox may be delivered to the user.

公开(公告)号：US11662581B2

公开(公告)日：2023-05-30

申请号：US16682446

申请日：2019-11-13

Applicant: GOOGLE LLC

Inventor： Ozan Cakmakci ,  Yi Qin

IPC: G02B27/01 ,  G02B5/30

CPC classification number: G02B27/0172 ,  G02B5/3025 ,  G02B2027/0174 ,  G02B2027/0178

Abstract: A head mounted display (HMD) system employs a holographic element in the optical path of the HMD to direct light to a user's eye. The HMD includes a micro-display, a lightguide, and a holographic element coupled to the lightguide. The holographic element is coupled to a polarization film, and together the element and film reflect and transmit light of different polarities in a specified pattern to assist the lightguide in directing light to the user's eye. For example, the hologram and polarization film can be configured to pass R-polarized light and reflect L-polarized light, thereby directing light from the waveguide along a specified path.

公开(公告)号：US20220269081A1

公开(公告)日：2022-08-25

申请号：US17317105

申请日：2021-05-11

Applicant: GOOGLE LLC

Inventor： Ozan Cakmakci ,  Omar David Negrete ,  Yi Qin

IPC: G02B27/01 ,  G02C7/02 ,  F21V8/00 ,  G02C11/00

Abstract: A head mounted display (HMD) device and method of manufacturing the same. The HMD includes a frame housing a micro-display to project display light, a lightguide configured to receive the display light from the micro-display, and a corrective layer having a world-side surface coupled to the eye-side surface of the lightguide. The lightguide is further configured to have a world-side surface with a radius of curvature based on an ophthalmic corrective prescription and an eye-side surface having an outcoupler feature formed thereon such that the coupled lightguide and corrective layer form a lens configured to fit within the frame.

公开(公告)号：US20210341740A1

公开(公告)日：2021-11-04

申请号：US16942307

申请日：2020-07-29

Applicant: GOOGLE LLC

Inventor： Ozan Cakmakci ,  Yi Qin ,  Daniel Corbalan ,  Benjamin McLaughlin Gallant ,  Carlin Vieri ,  Juseok Lee

IPC: G02B27/01 ,  G02B27/00

Abstract: An optical device includes a display that emits light through a polarization grating and then through a field lens toward a lightguide. Display light reflects from lightguide surfaces by total internal reflection (TIR). The display is mounted proximate to the lightguide. The optical device includes a first surface at an eye-side of the optical device and a second surface at a world-side. The optical device includes a first material having a first Abbe number and a second material having a second Abbe number different from the first Abbe number. The polarization grating, the first material, and the second material cause a color correction to light from the display or alter a chromatic aberration of the light from the display. A head mountable frame supports the display and the lightguide including the first and second materials.

公开(公告)号：US20240219731A1

公开(公告)日：2024-07-04

申请号：US18557464

申请日：2022-05-19

Applicant: GOOGLE LLC

Inventor： Ozan Cakmakci ,  Kirill Afanasev

IPC: G02B27/01

CPC classification number: G02B27/0172 ,  G02B2027/0174 ,  G02B2027/0178 ,  G02B2207/101

Abstract: Systems, devices, and techniques provide an increased size of an eyebox presented by a wearable display device by utilizing multiple outcouplers, each including a set of multiple holographic mirrors. Light from a micro-display is polarized via a controllable polarizer that switches between s-type and p-type polarization, collimated, passed to a TIR waveguide, and directed via multiple outcouplers to an eye of a user. The outcouplers may include one or more angular bandwidth holograms that reflect light that is incident on the hologram at a specific angle or a specific range of angles.

公开(公告)号：US20230280595A1

公开(公告)日：2023-09-07

申请号：US18318296

申请日：2023-05-16

Applicant: GOOGLE LLC

Inventor： Yi Qin ,  Ozan Cakmakci

IPC: G02B27/01 ,  G02C7/02

CPC classification number: G02B27/0172 ,  G02C7/027 ,  G02B2027/0178 ,  G02B2027/013

Abstract: A head mounted display includes a combiner configured to receive display light from a micro-display. The world-facing surface of the combiner has a curvature that corresponds to a user's vision correction prescription. The head mounted display also includes a corrective layer having a second curvature that corresponds to the user's vision correction prescription. The corrective layer is disposed on the eye-facing surface of the combiner such that the focal point of the display light is adjusted for the specific user as the display light exits the combiner towards the user's eye.

公开(公告)号：US20230078819A1

公开(公告)日：2023-03-16

申请号：US17471750

申请日：2021-09-10

Applicant: GOOGLE LLC

Inventor： Ozan Cakmakci ,  Eliezer Glik

IPC: G02B27/01 ,  F21V8/00 ,  G02B27/28

Abstract: A head-wearable display device is configured to support a plurality of combiners (e.g., at least two combiners) to expand an eyebox associated with the head-wearable display device. The plurality of combiners may expand the pupil and the head-wearable display device may be configured to align the magnification between the plurality of combiners, such that a single magnified virtual image with an expanded eyebox may be delivered to the user.

公开(公告)号：US20220121029A1

公开(公告)日：2022-04-21

申请号：US17071646

申请日：2020-10-15

Applicant: GOOGLE LLC

Inventor： Yi Qin ,  Ozan Cakmakci

IPC: G02B27/01 ,  G02C7/02

Abstract: A head mounted display includes a combiner configured to receive display light from a micro-display. The world-facing surface of the combiner has a curvature that corresponds to a user's vision correction prescription. The head mounted display also includes a corrective layer having a second curvature that corresponds to the user's vision correction prescription. The corrective layer is disposed on the eye-facing surface of the combiner such that the focal point of the display light is adjusted for the specific user as the display light exits the combiner towards the user's eye.

公开(公告)号：US11308832B2

公开(公告)日：2022-04-19

申请号：US16767339

申请日：2019-10-02

Applicant: Google LLC

Inventor： Matthew Valente ,  Konstantin Gromov ,  Kyle Skelton ,  John Fitch ,  Clayton Kimber ,  Ozan Cakmakci ,  Adrian Wong

IPC: G09G5/10 ,  G09G3/02 ,  G02B27/01

Abstract: A head mounted display (HMD) system includes a display for emitting light toward an eye-ward side of the system and which allows both ambient light and emitted light to reach an eye of a user. The system provides augmented reality (AR) based viewing and includes a rotatable substrate supporting a set of light emitting elements (301). Each light emitting element is oriented toward a world side of the HMD system. A rotatable reflective surface is positioned on the world side of the set of the light emitting elements. The reflective surface reflects emitted light toward a user eye. A motor, coupled to the rotatable substrate and the rotatable reflective surface, rotates these elements about a common axis and a display driver selectively activates the light emitting elements during this rotation in accordance with an illumination sequence so as to provide an image.