Patent · US Active

Imaging system comprising a Fresnel lens

US9316541B2 · kind B2 · utility

1Cited by

2References

16Claims

0Family size

Assignees

OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AÉROSPATIALES · FR
ULIS · FR

Inventors

Guillaume Druart · Palaiseau, FR
Florence De La Barriere · Clichy-sous-Bois, FR
Arnaud Crastes · Maubec, FR

Key dates

Filing date	Apr 16, 2012
Grant date	Apr 19, 2016
Priority date	—
Expiry date	Feb 28, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG02B27/0012
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The imaging system for imaging field rays comprises a detection surface, a device for focusing the field rays with said detection surface, and a diaphragm. Said device comprises a Fresnel lens comprising a first dioptre, the non-plane surface of which, called the active zone, makes it possible to focus the field rays towards said detection surface, and said diaphragm allows controlled distribution of the field rays over said active zone.

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