Back to results
US 2025/0053009 A1Published application
Shaped color-absorbing regions for waveguides
AssigneeMagic Leap, Inc.
InventorsVikramjit Singh, Matthew C. Traub, Marlon Edward Menezes, Yingnan Liu, Frank Y. Xu
Life of this patent
Estimating the term…
Abstract
A waveguide stack having color-selective regions on one or more waveguides. The color-selective regions are configured to absorb incident light of a first wavelength range in such a way as to reduce or prevent the incident light of the first wavelength range from coupling into a waveguide configured to transmit a light of a second wavelength range.
Claims21
A waveguide stack comprising:
- a first waveguide comprising a first input coupler configured to couple light in a first wavelength range into the first waveguide;
- a second waveguide coupled to the first waveguide and comprising a second input coupler configured to couple light in a second wavelength range into the second waveguide;
- a first color-selective region on a side of the first waveguide opposite that of the first input coupler, wherein the first color-selective region is configured to absorb incident light in the second wavelength range, thereby preventing the incident light in the second wavelength range from entering the first waveguide through the first input coupler;
- and
- a second color-selective region on a side of the second waveguide opposite that of the second input coupler, wherein the second color-selective region is configured to absorb incident light in the first wavelength range, thereby preventing the incident light in the first wavelength range from entering the second waveguide through the second input coupler.
2 more elements
A method of forming a wavelength-selective region on a waveguide, the method comprising:
- forming a recession on a portion of the waveguide proximate an input coupler, wherein the input coupler is configured to couple light in a selected wavelength range into the waveguide;
- disposing a polymerizable composition in the recession, wherein the polymerizable composition is color-selective;
- and
- polymerizing the polymerizable composition to yield the wavelength-selective region, wherein the wavelength-selective region is configured to absorb incident light on the input coupler other than light in the selected wavelength range.
1 more element
Dependencies are inferred from the claim text.