Patent ID: 6379803
Filing Date: 2002-04-30
Classification: C03C,G02B,Y10T

Abstract:
A low reflection glass article which is prepared by laminating a first layer which has a middle refractive index (n1) from 1.60 to 1.95 and has a film thickness of (60 to 130 nm)/n1, a second layer which has a high refractive index (n2) which is in a range from 1.91 to 2.60 and higher than the refractive index of said first layer by at least 0.20 and has a film thickness of (140 to 230 nm)/n2, and a third layer which has a low refractive index (n3) which is in a range from 1.35 to 1.59 and lower than the refractive index of said first layer by at least 0.20 and has a film thickness of (110 to 150 nm)/n3 in this order on a transparent glass substrate having a refractive index from 1.47 to 1.53, wherein said second layer contains silicon oxide in an amount from 0 to 30 mol % and titanium oxide in an amount from 70 to 100 mol %, said third layer contains a silicon oxide in an amount from 85to 100 mol % and titanium oxide in an amount from 0 to 10 mol %, and said first layer contains a silicon oxide in an amount from 15 to 80 mol % and titanium oxide in an amount from to 70 mol %, and at least one layer from said first, second and third layers contains fine gold particles in an amount from 0.5 to mol %.