Transparent coating having a medium refractivity

Details Transparent coating having a medium refractivity Transparent coating having a medium refractivity

1990-10-26

1992-10-20

Arnold, Bruce Y.

Optical: systems and elements

Light interference

Produced by coating or lamina

359586, 359589, G02B 528

Patent

active

051575477

ABSTRACT:
In order to coat a substrate by a transparent coating of a medium refractivity, consisting substantially of at least one metal oxide mixture a coating of an at least substantially homogenous mixture of up to about 80 percent by weight praseodymium oxide and the balance aluminum oxide is used. The coating includes 20 to 88 percent by weight, preferably 30 to 80 percent by weight praseodymium oxide. This reflection reducing transparent reflection reducing transparent coating having at least one metal oxide mixture is specifically suitable for the coating of optical substrates.

REFERENCES:
patent: 3185020 (1965-05-01), Thelen
patent: 3604784 (1971-09-01), Louderback
patent: 3804491 (1974-04-01), Morokuma et al.

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