公开(公告)号：US20180172998A1

公开(公告)日：2018-06-21

申请号：US15896438

申请日：2018-02-14

Applicant: Magic Leap, Inc.

Inventor： Robert D. TEKOLSTE ,  Michael A. KLUG ,  Paul M. GRECO ,  Brian T. SCHOWENGERDT

IPC: G02B27/01 ,  G02B5/18 ,  G02B27/42 ,  G06T19/00 ,  F21V8/00

CPC classification number: G02B27/0172 ,  G02B5/1828 ,  G02B5/1842 ,  G02B6/0011 ,  G02B27/4205 ,  G02B2027/0105 ,  G02B2027/0107 ,  G02B2027/0123 ,  G02B2027/0174 ,  G06T19/006

Abstract: Disclosed is an improved diffraction structure for 3D display systems. The improved diffraction structure includes an intermediate layer that resides between a waveguide substrate and a top grating surface. The top grating surface comprises a first material that corresponds to a first refractive index value, the underlayer comprises a second material that corresponds to a second refractive index value, and the substrate comprises a third material that corresponds to a third refractive index value.

公开(公告)号：US20180149873A1

公开(公告)日：2018-05-31

申请号：US15826315

申请日：2017-11-29

Applicant: Magic Leap, Inc.

Inventor： Lionel Ernest EDWIN ,  Ivan Li Chuen YEOH ,  Brian T. SCHOWENGERDT ,  Kevin Richard CURTIS ,  William Hudson WELCH ,  Pierre ST. HILAIRE ,  Hui-Chuan CHENG

IPC: G02B27/01 ,  F21V8/00

Abstract: A method and system for increasing dynamic digitized wavefront resolution, i.e., the density of output beamlets, can include receiving a single collimated source light beam and producing multiple output beamlets spatially offset when out-coupled from a waveguide. The multiple output beamlets can be obtained by offsetting and replicating a collimated source light beam. Alternatively, the multiple output beamlets can be obtained by using a collimated incoming source light beam having multiple input beams with different wavelengths in the vicinity of the nominal wavelength of a particular color. The collimated incoming source light beam can be in-coupled into the eyepiece designed for the nominal wavelength. The input beams with multiple wavelengths take different paths when they undergo total internal reflection in the waveguide, which produces multiple output beamlets.