Optical layers to improve performance of eyepieces for use with virtual and augmented reality display systems
AssigneeMagic Leap, Inc.
InventorsRobert D. TEKOLSTE, Vikramjit SINGH, Chinmay KHANDEKAR
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Abstract
Improved diffractive optical elements for use in an eyepiece for an extended reality system, The diffractive optical elements comprise a diffraction structure having a waveguide substrate, a surface grating positioned on a first side of the waveguide substrate, and one or more optical layer pairs disposed between the waveguide substrate and the surface grating. Each optical layer pair comprises a low index layer and a high index layer disposed directly on an exterior side of the low index layer.
Claims21
An eyepiece for an XR display system, comprising:
- a diffractive optical element (DOE) to receive light associated with one or more frames of image data and direct the light to a user's eyes, the DOE comprising a diffraction structure having a waveguide substrate having a first side and a second side opposing the first side, a surface grating positioned on a first side of the waveguide substrate, and one or more optical layer pairs disposed between the waveguide substrate and the surface grating;
- and
- each optical layer pair comprising a low index layer and a high index layer disposed directly on an exterior side of the low index layer, wherein the high index layer has a higher refractive index than the low index layer.
An extended reality (XR) display system for delivering extended reality content to a user, comprising:
- an image-generating source to provide one or more frames of image data;
- a light modulator to transmit light associated with the one or more frames of image data;
- and
- a diffractive optical element (DOE) to receive light associated with one or more frames of image data and direct the light to a user's eyes, the DOE comprising a diffraction structure having a waveguide substrate having a first side and a second side opposing the first side, a surface grating positioned on a first side of the waveguide substrate, and one or more optical layer pairs disposed between the waveguide substrate and the surface grating;
- and
- each optical layer pair comprising a low index layer and a high index layer disposed directly on an exterior side of the low index layer, wherein the high index layer has a higher refractive index than the low index layer.
(canceled)
Dependencies are inferred from the claim text.