公开(公告)号：US20230341597A1

公开(公告)日：2023-10-26

申请号：US18044824

申请日：2021-09-14

Applicant: Magic Leap, Inc.

Inventor： Victor Kai LIU ,  Samarth BHARGAVA ,  Brandon Michael-James BORN ,  Dianmin LIN ,  Pierre ST. HILAIRE ,  Vikramjit SINGH ,  Kang LUO

IPC: G02B5/18 ,  G02B27/09 ,  G02B27/00 ,  G02B27/01

CPC classification number: G02B5/1819 ,  G02B27/0944 ,  G02B27/0081 ,  G02B27/0101 ,  G02B27/0172 ,  G02B2027/0112

Abstract: An eyepiece waveguide for an augmented reality display system. The eyepiece waveguide can include an optically transmissive substrate with an input coupling grating (ICG) region. The ICG region can receive a beam of light and couple the beam into the substrate in a guided propagation mode. The eyepiece waveguide can also include a combined pupil expander-extractor (CPE) grating region that receives the beam of light from the ICG region and alters the propagation direction of the beam with a first interaction and out-couples the beam with a second interaction. The diffractive features of the CPE grating region can be arranged in rows and columns of alternating higher and lower quadrilateral surfaces or the diffractive features can comprise diamond shaped raised ridges. The eyepiece waveguide can also include one or more recycler grating regions.