Accession Number : ADD007329

Title :   Immersed Reticle.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Allen,Edwin M ; Fitzgerald,William C ; Blazek,Henry ; Turner,George

Report Date : 11 Dec 1979

Pagination or Media Count : 4

Abstract : A low reflectance reticle immersed in optical cement between transparent substrates is disclosed. A copper reticle is vacuum deposited upon one transparent substrate and chemically treated to produce anti-reflectance properties. The reticle and substrate to which it is attached are then cemented with optical cement to a second transparent substrate to immerse the anti-reflectance reticle between transparent substrates in optical cement. The immersed reticle thus formed has superior anti-reflection properties and is protected from mechanical damage by its immersed location. Immersed reticles may be installed between elements of a compound lens if desired. (Author)

Descriptors :   *Patents, *Reticles, Antireflection coatings, Transparence, substrates, Cements, Reflectance, Optical materials, Immersion, Titanium, Copper, Metal films, Sputtering, Vacuum deposition, Etching, Photolithography

Subject Categories : Optical Detection and Detectors
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE