Patent · US Active

Method for producing a polarizing optical element

US7632552B2 · kind B2 · utility

1Cited by

2References

38Claims

0Family size

Assignee

Essilor International (Compagnie Generale d'Optique) · FR

Inventors

Cedric Begon · Charenton-le-Pont, FR
Christelle Defranco · Charenton-le-Pont, FR
Noemie Lesartre · Paris, FR
Dominique Rychel · Paris, FR

Key dates

Filing date	Feb 22, 2007
Grant date	Dec 15, 2009
Priority date	—
Expiry date	Jan 18, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24248
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A multilayer polarizing structure is produced on a temporary support. The structure comprises at least one orienting layer and one polarizing layer comprising dichroic dyes, the dichroic dyes having an angular orientation determined by the orienting layer. The multilayer structure is separated from the temporary substrate before being applied onto a surface of an optical element. Applying the structure onto the optical element may be easily carried out while obtaining a quality compatible with many uses of the optical element, in particular ophthalmic uses.

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