Optical element having antireflection film

Details Optical element having antireflection film Optical element having antireflection film

G - Physics

02

B

G02B 1/00 (2006.01) G02B 1/11 (2006.01)

Patent

CA 2354961

To solve the problem of achieving an optical element which has a high adhesiveness between a plastic substrate and an antireflection coating as well as excellent heat resistance and impact resistance, an optical element is provided comprising a plastic substrate and, provided thereon in this order, a basic layer of niobium (Nb) optionally in admixture with one or more components) selected from aluminum (Al), tantalum (Ta), chromium (Cr) and mixtures thereof in an amount of up to 50 wt.-% of the entire layer, and an antireflection film.

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