Patent · US Active

Collimating optical device and system

US8643948B2 · kind B2 · utility

144Cited by

8References

28Claims

0Family size

Assignee

Lumus Ltd. · IL

Inventors

Yaakov Amitai · Rehovot, IL
Mali Hadad · Lod, IL
Naamah Friedmann · Jerusalem, IL

Key dates

Filing date	Apr 17, 2008
Grant date	Feb 4, 2014
Priority date	—
Expiry date	Sep 27, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG02B2027/0178
WIPO fieldOptics
WIPO sectorInstruments

Abstract

There is provided a light-guide, compact collimating optical device, including a light-guide having a light-waves entrance surface, a light-waves exit surface and a plurality of external surfaces, a light-waves reflecting surface carried by the light-guide at one of the external surfaces, two retardation plates carried by light-guides on a portion of the external surfaces, a light-waves polarizing beamsplitter disposed at an angle to one of the light-waves entrance or exit surfaces, and a light-waves collimating component covering a portion of one of the retardation plates. A system including the optical device and a substrate, is also provided.

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