Multilayer anti-reflection film for ultraviolet rays

Details Multilayer anti-reflection film for ultraviolet rays Multilayer anti-reflection film for ultraviolet rays

1973-11-19

1976-02-03

Stern, Ronald J.

350164, G02B 528

Patent

active

039361365

ABSTRACT:
A three-layer anti-reflection film for ultraviolet range comprises a first layer having a refractive index n.sub.1 determined so as to provide a great dispersion effect in the peripheral range, a second layer having a refractive index n.sub.2, and a third layer having a refractive index n.sub.1. The three layers are arranged symmetrically. The first and third layers are provided with an asymmetry so that an intended refractive index n* for the ultraviolet range from 200m.mu. to 400m.mu. may be obtained. The film has a predetermined optical thickness.

REFERENCES:
patent: 3738732 (1973-06-01), Ikeda
Baymeister, Journal of the Optical Society of America, Vol. 52, No. 10, Oct. 1962, pp. 1149-1152.

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