Hee J Lee

US Patent:

20220229396, Jul 21, 2022

Filed:

Apr 5, 2022

Appl. No.:

17/658048

Inventors:

- Menlo Park CA, US
Austin Lane - Snohomish WA, US
Wanli Chi - Sammamish WA, US
Hee Yoon Lee - Kirkland WA, US

International Classification:

G03H 1/04
G02B 5/02
G02B 5/08
G03H 1/02

Abstract:

Techniques disclosed herein relate to modifying refractive index modulation in a holographic optical element, such as a holographic grating. According to certain embodiments, a holographic optical element or apodized grating includes a polymer layer comprising a first region characterized by a first refractive index and a second region characterized by a second refractive index. The holographic optical element or apodized grating includes a plurality of nanoparticles dispersed in the polymer layer. The nanoparticles have a higher concentration in either the first region or the second region. In some embodiments, the nanoparticles may be configured to increase the refractive index modulation. In some embodiments, the nanoparticles may be configured to apodize the grating by decreasing the refractive index modulation proximate to sides of the grating. The refractive index may be modulated by applying a monomer reservoir buffer layer to the polymer layer, either before or after hologram fabrication.

US Patent:

20230077228, Mar 9, 2023

Filed:

Aug 9, 2022

Appl. No.:

17/884510

Inventors:

- Menlo Park CA, US
Andrew MAIMONE - Duvall WA, US
Alexander Jobe FIX - Seattle WA, US
Robert Dale CAVIN - Bellevue WA, US
Hee Yoon LEE - Kirkland WA, US
Matthieu Charles Raoul LEIBOVICI - Seattle WA, US
Brian WHEELWRIGHT - Sammamish WA, US
Douglas Robert Lanman - Bellevue WA, US

International Classification:

G02B 27/01
G06T 7/73
G03H 1/04
A01N 43/50
A01N 43/54
A01N 43/90
A01N 53/00
C07D 401/04
C07D 401/14
C07D 405/14
C07D 487/04
C07D 498/04

Abstract:

A system for making a holographic medium for use in generating light patterns for eye tracking includes a light source configured to provide light and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium and one or more diffractive optical elements configured to receive the second portion of the light and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.

US Patent:

20210017150, Jan 21, 2021

Filed:

Oct 6, 2020

Appl. No.:

17/064251

Inventors:

- Menlo Park CA, US
Andrew MAIMONE - Duvall WA, US
Alexander Jobe FIX - Seattle WA, US
Robert Dale CAVIN - Seattle WA, US
Hee Yoon LEE - Kirkland WA, US
Matthieu Charles Raoul LEIBOVICI - Seattle WA, US
Brian WHEELWRIGHT - Sammamish WA, US
Douglas Robert LANMAN - Bellevue WA, US

International Classification:

C07D 401/04
A01N 43/50
A01N 43/90
A01N 53/00
A01N 43/54
C07D 401/14
C07D 405/14
C07D 487/04
C07D 498/04

Abstract:

A system for making a holographic medium for use in generating light patterns for eye tracking includes a light source configured to provide light and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium and one or more diffractive optical elements configured to receive the second portion of the light and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.

US Patent:

20200192097, Jun 18, 2020

Filed:

Dec 17, 2018

Appl. No.:

16/222990

Inventors:

- Menlo Park CA, US
Andrew Maimone - Duvall WA, US
Alexander Jobe Fix - Seattle WA, US
Robert Dale Cavin - Seattle WA, US
Hee Yoon Lee - Bellevue WA, US
Matthieu Charles Raoul Leibovici - Seattle WA, US
Brian Wheelwright - Sammamish WA, US
Douglas Robert Lanman - Bellevue WA, US

International Classification:

G02B 27/01
G03H 1/04
G06T 7/73

Abstract:

An eye-tracking system includes a holographic illuminator and a detector. The holographic illuminator includes a light source configured to provide light and a holographic medium optically coupled with the light source. The holographic medium is configured to receive the light provided from the light source and concurrently project a plurality of separate light patterns toward an eye. The detector is configured to detect a reflection of at least a subset of the plurality of separate light patterns, reflected off the eye, for determining a location of a pupil of the eye. Also disclosed is a method for determining a location of a pupil of an eye with the eye-tracking system that includes the holographic illuminator.

US Patent:

20200192278, Jun 18, 2020

Filed:

Dec 17, 2018

Appl. No.:

16/222993

Inventors:

- Menlo Park CA, US
Andrew Maimone - Duvall WA, US
Alexander Jobe Fix - Seattle WA, US
Robert Dale Cavin - Seattle WA, US
Hee Yoon Lee - Bellevue WA, US
Matthieu Charles Raoul Leibovici - Seattle WA, US
Brian Wheelwright - Sammamish WA, US
Douglas Robert Lanman - Bellevue WA, US

International Classification:

G03H 1/04

Abstract:

A method includes providing light from a light source and separating the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The method also includes transmitting the first portion of the light through a first set of optical elements to provide a first wide-field beam, transmitting the second portion of the light through a second set of optical elements to provide a second wide-field beam that is spatially separated from the first wide-field beam, and transmitting the second wide-field beam through a third set of optical elements to provide a plurality of separate light patterns. The method further includes concurrently projecting the first wide-field beam and the plurality of separate light patterns onto an optically recordable medium to form a holographic medium.

US Patent:

20200192279, Jun 18, 2020

Filed:

Dec 17, 2018

Appl. No.:

16/223026

Inventors:

- Menlo Park CA, US
Andrew Maimone - Duvall WA, US
Alexander Jobe Fix - Seattle WA, US
Robert Dale Cavin - Seattle WA, US
Hee Yoon Lee - Bellevue WA, US
Matthieu Charles Raoul Leibovici - Seattle WA, US
Brian Wheelwright - Sammamish WA, US
Douglas Robert Lanman - Bellevue WA, US

International Classification:

G03H 1/04
G03H 1/02
G02B 27/01
G03F 7/00

Abstract:

A system for making a holographic medium for use in generating light patterns for eye tracking includes a light source configured to provide light and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium, a second set of optical elements configured to transmit the second portion of the light for providing a second wide-field beam, and a plurality of parabolic reflectors optically coupled with the second set of optical elements and configured to receive the second wide-field beam and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.

US Patent:

20200192280, Jun 18, 2020

Filed:

Dec 17, 2018

Appl. No.:

16/223030

Inventors:

- Menlo Park CA, US
Andrew Maimone - Duvall WA, US
Alexander Jobe Fix - Seattle WA, US
Robert Dale Cavin - Seattle WA, US
Hee Yoon Lee - Bellevue WA, US
Matthieu Charles Raoul Leibovici - Seattle WA, US
Brian Wheelwright - Sammamish WA, US
Douglas Robert Lanman - Bellevue WA, US

International Classification:

G03H 1/04
G03H 1/02
G02B 27/01
G03F 7/00

Abstract:

A system for making a holographic medium for use in generating light patterns for eye tracking includes a light source configured to provide light and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium and one or more diffractive optical elements configured to receive the second portion of the light and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.

US Patent:

20200192281, Jun 18, 2020

Filed:

Dec 17, 2018

Appl. No.:

16/223033

Inventors:

- Menlo Park CA, US
Andrew Maimone - Duvall WA, US
Alexander Jobe Fix - Seattle WA, US
Robert Dale Cavin - Seattle WA, US
Hee Yoon Lee - Bellevue WA, US
Matthieu Charles Raoul Leibovici - Seattle WA, US
Brian Wheelwright - Sammamish WA, US
Douglas Robert Lanman - Bellevue WA, US

International Classification:

G03H 1/04

Abstract:

A system for making a holographic medium for use in generating light patterns for eye tracking includes a light source configured to provide light and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium and a plurality of optical fibers configured to receive the second portion of the light and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.