Method of making a wipe-resistant antireflection coating on...

Details Method of making a wipe-resistant antireflection coating on... Method of making a wipe-resistant antireflection coating on...

2007-08-30

2010-11-30

Ahmed, Shamim (Department: 1713)

Coating processes

Optical element produced

Transparent base

C427S162000, C427S163100, C427S165000, C106S287340

Reexamination Certificate

active

07842339

ABSTRACT:
In the method of making an adherent and wipe-resistant porous SiO2-containing antireflection coating on a borosilicate glass body a coating solution containing from 1.0 to 6.0 wt. % of HCl, from 0.5 to 7.0 wt. % of a SiO2sol based on solids content, from 0.5 to 5.0 wt. % of water, and from 85 to 98 wt. % of at least one volatile water-soluble organic solvent, is used to form an antireflection coating on the glass body. A glass body, on which the foregoing coating can be provided with good adherence and wipe resistance properties, is made of borosilicate glass having a composition, in percent by weight based on oxide content, of SiO2, 70 to 75; B2O3, 8 to 11; Al2O3, 5 to 9; alkali metal oxides, 7 to 12; and alkaline earth metal oxides, 0 to 10.

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