The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 2019
Filed:
Sep. 27, 2018
X Development Llc, Mountain View, CA (US);
Mitchell Heinrich, Oakland, CA (US);
Martin F. Schubert, Mountain View, CA (US);
Michael J. Grundmann, San Jose, CA (US);
William R. Regan, San Carlos, CA (US);
X Development LLC, Mountain View, CA (US);
Abstract
A color shifting illuminator includes a first luminescent material that absorbs first incident photons having an energy greater than or equal to a first threshold energy, and emits first photons with less energy than the first incident photons. The color shifting illuminator also includes a second luminescent material that absorbs second incident photons having an energy greater than or equal to a second threshold energy, and emits second photons with less energy than the second incident photons and less energy than the first photons. The first luminescent material and the second luminescent material are included in a waveguide, and the waveguide exhibits total internal reflection for the first photons and the second photons satisfying conditions for total internal reflection. An extraction region is coupled to the waveguide to emit the first photons and the second photons.