The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 27, 1994
Filed:
Nov. 08, 1993
Applicant:
Inventors:
Jean-Christophe Rostaing, Versailles, FR;
Francois Coeuret, Guyancourt, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427536 ; 427569 ; 427162 ; 427164 ; 4272551 ; 427322 ; 4274192 ;
Abstract
The invention concerns the preparation of an optical structure. On a polymeric substrate there is first provided a surface activation, and the deposit of a layer of SiO.sub.2, 2000 .ANG. thick after which there is a deposit of a plurality of functional layers and finally a deposit of SiO.sub.2, 3 microns thick followed by a deposit of Si.sub.3 N.sub.4 /SiO.sub.x N.sub.y 3 microns thick, the latter being produced under radio-frequency polarization. The thus obtained optical structure has properties of adhesiveness, resistance to abrasion and to thermal impacts.