Optical element

Details Optical element Optical element

1983-03-01

1985-02-12

Arnold, Bruce Y.

350166, G02B 528

Patent

active

044987285

ABSTRACT:
An optical element particularly elements of IR optics comprises a system of a plurality of infrared transmitting optically effective thin layers of substances. The substances are chosen from the group: germanium, zinc selenide, zinc sulfide, chalcogenide glasses, thorium fluoride, yttrium fluoride, and praseodymium fluoride. The layers are applied to an infrared transmitting substrate of a material of the group: germanium, zinc selenide, zinc sulfide and chalcogenide glasses. An intermediate layer is disposed between the thin layers and the infrared transmitting substrate and this has a maximum thickness of 100 nm and comprises a material of the group: hafnium oxide, yttrium oxide, and scandium oxide.

REFERENCES:
patent: 3468594 (1969-09-01), Vogl et al.

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