Patent · US Active

Annular light guide illuminator and optical scanner

US8894260B2 · kind B2 · utility

1Cited by

7References

17Claims

0Family size

Assignee

SICPA HOLDING SA · CH

Inventors

Milan Vasic · Geneva, CH
Nicola Duca · Monthey, CH

Key dates

Filing date	Mar 21, 2009
Grant date	Nov 25, 2014
Priority date	—
Expiry date	Sep 3, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/0045
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The disclosed annular light guide illuminator (10) is operable to guide light from its entry surface (12) to its exit surface (16) for illuminating a zone (17) at its distal end (19), and comprises a truncated-cone-shaped inner cavity (18) of which base opens onto said distal end (19), and of which truncated summit (20) opposite to said base opens onto an inner hole portion (21) for back transmitting light reflected/emitted from said zone. An optical scanner implementing said illuminator is also disclosed.

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