Patent · US Active

Substrate-guided optical device utilizing thin transparent layer

US7724443B2 · kind B2 · utility

263Cited by
2References
26Claims
0Family size

Assignee

Inventor

Key dates

Filing dateFeb 8, 2006
Grant dateMay 25, 2010
Priority date—
Expiry dateFeb 10, 2027

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B2027/0174
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

There is provided an optical device, including a light-transmitting substrate having two major surfaces and edges, an optical element (16) for coupling light waves into the substrate by total internal reflexion, and a plurality of partially reflecting surfaces (22a, 22b, 22c) carried by the substrate. The partially reflecting surfaces are parallel to each other and are not parallel to any of the edges of the substrate. At least one of the partially reflecting surfaces (22a, 22b, 22c) does not intersect with at least one of the two major surfaces, and the optical element (16) intersects with at least one of the two major surfaces.

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