Accession Number : ADD004361

Title :   Method of Making a Reticle-Lens.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Hunt,Robert E ; Moore,Kenneth L

Report Date : 16 Aug 1977

Pagination or Media Count : 4

Abstract : This document describes a method of producing an optical reticle and the reticle produced thereby. A thin layer of aluminum is deposited on the face of a sapphire substrate and a reticle pattern is chemically etched therein. The system is then exposed to air at an elevated temperature for approximately one hour to oxidize the remaining aluminum layer. A film of titanium is next placed over the rough aluminum oxide as by sputtering, for example, and the excess titanium is etched away by the same pattern to produce the finished reticle. (Author)

Descriptors :   *Patents, *Reticles, *Optical lenses, Thin films, Deposition, Etching, Optical equipment, Sputtering, Titanium, Aluminum, Sapphire, Substrates

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE