Anti-reflection film for plastic optical component

Details Anti-reflection film for plastic optical component Anti-reflection film for plastic optical component

1990-06-22

1992-12-15

Dzierzynski, Paul M.

Optical: systems and elements

Light interference

Produced by coating or lamina

359589, 359581, G02B 110, G02B 528

Patent

active

051722690

ABSTRACT:
An anti-reflection film to be used for a plastic optical component is excellent in adhesion, durability and optical characteristic as well as be suited for mass-production. The anti-reflection film is a three-layered structure comprising, from the surface of the optical component on which it is formed, a first layer and a second layer which are made of a same dielectric material and a third layer which is a different dielectric material therefrom. Oxygen is introduced when the first layer is formed in order to provide the first layer smaller in refractive index than the second layer. The first and second layers are each made of any of cerium oxide, tantalum pentoxide and hafnium oxide and the third layer is made of silicon dioxide.

REFERENCES:
patent: 4387960 (1983-06-01), Tani
patent: 4497539 (1985-02-01), Sakurai et al.
patent: 4568140 (1986-02-01), Van der Werf et al.
patent: 4609267 (1986-09-01), Deguchi et al.
patent: 4979802 (1990-12-01), Ichikawa
patent: 4988164 (1991-01-01), Ichikawa

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