EP 0973639 A1 20000126 - OPTICAL ARTICLE WITH ANTI-REFLECTING COATING, CORRESPONDING COATING MATERIAL AND COATING METHOD
Title (en)
OPTICAL ARTICLE WITH ANTI-REFLECTING COATING, CORRESPONDING COATING MATERIAL AND COATING METHOD
Title (de)
OPTISCHER ARTIKEL MIT REFLEXFREIER BESCHICHTUNG, ENTSPRECHENDES BESCHICHTUNGSMATERIAL UND BESCHICHTUNGSVERFAHREN
Title (fr)
ARTICLE OPTIQUE TRAITE ANTI-REFLET, MATERIAU ET PROCEDE CORRESPONDANTS
Publication
Application
Priority
- FR 9704392 A 19970410
- US 9806234 W 19980330
- US 5398697 P 19970728
Abstract (en)
[origin: WO9845113A1] The invention relates to an optical article which comprises a mineral substrate and an anti-reflecting coating on at least one surface of said mineral substrate. In a characteristic way, said mineral substrate has a refractive index between 1.5 and 1.9 and said anti-reflecting coating is a single layer, nanoporous/nanograin structured coating, obtained by heat-treating a sol-gel film, constituted of strongly interconnected, inorganic polymers, also linked with inorganic particles, said polymers forming a tri-dimensional network which has the general formula M-OH/M-O-M, in which M represents a metal or a metalloid, advantageously selected from silicon, aluminium, zirconium, titanium and mixtures thereof. The invention also relates to a sol-gel material which is precursor of said anti-reflecting coating, and to a coating method for obtaining said optical article. Said device is advantageously an ophthalmic lens.
IPC 1-7
IPC 8 full level
C03C 1/00 (2006.01); C03C 17/00 (2006.01); C03C 17/25 (2006.01); C09D 183/00 (2006.01); C09D 185/00 (2006.01); G02B 1/11 (2006.01)
CPC (source: EP)
B82Y 30/00 (2013.01); C03C 1/008 (2013.01); C03C 17/007 (2013.01); C03C 2203/24 (2013.01); C03C 2217/212 (2013.01); C03C 2217/213 (2013.01); C03C 2217/214 (2013.01); C03C 2217/22 (2013.01); C03C 2217/23 (2013.01); C03C 2217/45 (2013.01); C03C 2217/475 (2013.01); C03C 2218/113 (2013.01)
Designated contracting state (EPC)
DE ES FR GB IT NL
DOCDB simple family (publication)
WO 9845113 A1 19981015; AR 012580 A1 20001108; BR 9808632 A 20000516; CA 2285944 A1 19981015; CN 1255889 A 20000607; EP 0973639 A1 20000126; EP 0973639 A4 20000719; JP 2001526798 A 20011218
DOCDB simple family (application)
US 9806234 W 19980330; AR P980101653 A 19980408; BR 9808632 A 19980330; CA 2285944 A 19980330; CN 98804014 A 19980330; EP 98913284 A 19980330; JP 54283698 A 19980330