Anti-reflection optical element

Details Anti-reflection optical element Anti-reflection optical element

1992-02-24

1993-01-19

Lerner, Martin

Optical: systems and elements

Light interference

Produced by coating or lamina

359581, 359582, 427164, G02B 110, G02B 528

Patent

active

051811413

ABSTRACT:
The anti-reflection optical element of the present invention achieves reduction of surface reflection by providing a multi-layered anti-reflection film directly or indirectly on an optical component made of a plastic. The anti-reflection optical element of the present invention uses a multi-layered anti-reflection film comprising at least one high refractive index film layer which is a film of mixed metal oxides comprising tantalum oxide, zirconium oxide and yttrium oxide deposited by evaporation process, and thereby has solved the problems of conventional anti-reflection optical elements that their optical, mechanical and chemical properties are deteriorated with the lapse of time.

REFERENCES:
patent: 3934961 (1976-01-01), Itoh et al.
patent: 4132919 (1979-01-01), Maple
patent: 4749255 (1988-06-01), Chakrabarti et al.
patent: 4765729 (1988-08-01), Taniguchi
patent: 4784467 (1988-11-01), Akatsuka et al.
patent: 4802737 (1989-02-01), Denton

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