Invention Grant
- Patent Title: Color shifting illuminator
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Application No.: US16144620Application Date: 2018-09-27
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Publication No.: US10393942B2Publication Date: 2019-08-27
- Inventor: Mitchell Heinrich , Martin F. Schubert , Michael J. Grundmann , William R. Regan
- Applicant: X Development LLC
- Applicant Address: US CA Mountain View
- Assignee: X Development LLC
- Current Assignee: X Development LLC
- Current Assignee Address: US CA Mountain View
- Agency: Christensen O'Connor Johnson Kindness PLLC
- Main IPC: F21V8/00
- IPC: F21V8/00 ; A01G9/20 ; A01G22/00 ; A01G9/26

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.
Public/Granted literature
- US20190025495A1 COLOR SHIFTING ILLUMINATOR Public/Granted day:2019-01-24
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