Patent · US Active

Slim waveguide coupling apparatus and method

US9164218B2 · kind B2 · utility

6Cited by
228References
21Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 5, 2014
Grant dateOct 20, 2015
Priority date
Expiry dateSep 5, 2034

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B6/0076
  • WIPO fieldElectrical machinery, apparatus, energy
  • WIPO sectorElectrical engineering

Abstract

In various embodiments, an illumination structure includes a discrete light source disposed proximate a bottom surface of a waveguide and below a depression in a top surface thereof. A top mirror may be disposed above the discrete light source to convert modes of light emitted from the discrete light source into trapped modes, thereby increasing the coupling efficiency of the illumination structure.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.