The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 12, 1985
Filed:
Mar. 01, 1983
Balzers Aktiengesellschaft, , LI;
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.