Patent · US Active

Dual depth exit pupil expander

US10746999B2 · kind B2 · utility

2Cited by
18References
29Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 27, 2017
Grant dateAug 18, 2020
Priority date—
Expiry dateDec 27, 2037

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B2027/0185
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

An optical device includes a waveguide including an in-coupling optical element configured to in-couple light into the waveguide, a light distributing element configured to receive light from the in-coupling optical element and distribute light at a selected wavelength, and an out-coupling optical element configured to receive light from the light distributing element and out-couple light out of the waveguide. The out-coupling optical element includes a first region configured to out-couple light at a first depth plane based on a lens function of the first region and a second region configured to out-couple light at a second depth plane based on a different lens function of the second region.

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