Patent · US Active

Optical filter

US8101281B2 · kind B2 · utility

0Cited by

1References

14Claims

0Family size

Assignee

EMS-Patent AG · CH

Inventor

Ralf Hala · Stavenhagen, DE

Key dates

Filing date	Mar 3, 2010
Grant date	Jan 24, 2012
Priority date	—
Expiry date	Mar 3, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/3175
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention relates to an optical filter which comprises at least one optically effective layer and a protective layer on both sides, with at least one of the protective layers being a non-stretched protective polyamide layer which is cast from the solution. The optical filter in accordance with the invention is characterized in that the at least one protective polyamide layer consists of PA MACMI/12 and optional aggregates chosen as required. The at least one protective polyamide layer has a content of laurolactam of 23 mole percent to 57 mole percent in relation to the entire polyamide.

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