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US 11,994,670 B2Granted
Color-selective waveguides for augmented reality/mixed reality applications
AssigneeMagic Leap, Inc.
InventorsSharad D. Bhagat, David Carl Jurbergs, Ryan Jason Ong, Christophe Peroz, Chieh Chang, Ling Li
Life of this patent
Estimating the term…
Abstract
Color-selective waveguides, methods for fabricating color-selective waveguides, and augmented reality (AR)/mixed reality (MR) applications including color-selective waveguides are described. The color-selective waveguides can advantageously reduce or block stray light entering a waveguide (e.g., red, green, or blue waveguide), thereby reducing or eliminating back-reflection or back-scattering into the eyepiece.
Claims19
An optical device comprising:
- a waveguide that includes one or more patterned regions and one or more unpatterned regions on one or more surfaces of the waveguide, wherein the one or more patterned regions include an incoupling grating (ICG) configured to incouple one or more of red light, green light, and blue light;
- and
- a polymer coating on at least a portion of at least one unpatterned region of at least one surface of the waveguide, wherein the polymer coating includes a chromatic component that is configured to absorb at least 90% of one or more of red light, green light, and blue light traveling through the waveguide, wherein the at least 90% of one or more of red light, green light, and blue light is light that the ICG is not configured to incouple.
Dependencies are inferred from the claim text.