Optical lens of transparent plastic

Details Optical lens of transparent plastic Optical lens of transparent plastic

G - Physics

02

B

G02B 1/10 (2006.01) G02B 1/11 (2006.01)

Patent

CA 2157070

Coated optical lens with a substrate of transparent plastic (1) with a first layer (2) of Sio directly on the substrate and a second layer (3) of borosilicate glass with an index of refraction of 1.47 (.lambda. = 550 nm) to ensure shift-free spectral behavior. The borosilicate glass layer can be up to 3 µ thick, preferably 2,550 nm; layers 3-7 are formed of TiO2, SiO2, and Al2O3 to provide an antiglare effect. - 15 -

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