Invention Grant
- Patent Title: Method and system for dual projector waveguide displays with wide field of view using a combined pupil expander-extractor (CPE)
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Application No.: US17327570Application Date: 2021-05-21
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Publication No.: US11536972B2Publication Date: 2022-12-27
- Inventor: Brian T. Schowengerdt , Mathew D. Watson , Brandon Michael-James Born , Samarth Bhargava , Victor Kai Liu
- Applicant: Magic Leap, Inc.
- Applicant Address: US FL Plantation
- Assignee: Magic Leap, Inc.
- Current Assignee: Magic Leap, Inc.
- Current Assignee Address: US FL Plantation
- Agency: Kilpatrick Townsend & Stockton LLP
- Main IPC: G02B27/01
- IPC: G02B27/01 ; G02B27/00 ; F21V8/00

Abstract:
An eyepiece waveguide for an augmented reality display system includes a substrate having a first surface and a second surface and a diffractive input coupling element formed on or in the first surface or the second surface of the substrate. The diffractive input coupling element is configured to receive an input beam of light and to couple the input beam into the substrate as a guided beam. The eyepiece waveguide also includes a diffractive combined pupil expander-extractor (CPE) element formed on or in the first surface or the second surface of the substrate. The diffractive CPE element includes a first portion and a second portion divided by an axis. A first set of diffractive optical elements is disposed in the first portion and oriented at a positive angle with respect to the axis and a second set of diffractive optical elements is disposed in the second portion and oriented at a negative angle with respect to the axis.
Public/Granted literature
- US20210364803A1 METHOD AND SYSTEM FOR DUAL PROJECTOR WAVEGUIDE DISPLAYS WITH WIDE FIELD OF VIEW Public/Granted day:2021-11-25
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