Patent · US Active

Polarisation rotator with small induced ellipticity

US9025095B2 · kind B2 · utility

2Cited by

0References

4Claims

0Family size

Assignee

COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

Umberto Rossini · Voiron, FR
Maxime Favier · Les Ulis, FR
Stephanie Le Calvez · Saint-Égrève, FR
Sophie Morales · Varces, FR

Key dates

Filing date	Dec 12, 2013
Grant date	May 5, 2015
Priority date	—
Expiry date	Dec 12, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG02F1/133638
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention relates to a polarization rotator with small polarization ellipticity. The rotator includes a first optical unit (401) and a second optical unit (402) on a common optical axis. The first optical unit (401) is formed by a rectilinear polarizer (205) and a first quarter-wave plate (210), where the polarization direction of the polarizer is a bisector of the neutral axes of the quarter-wave plate. The second optical unit (402) is formed by a variable-delay plate (220) and a second quarter-wave plate (230), where the neutral axes of the second quarter-wave plate are bisectors of the neutral variable-delay plate axes.

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