HERMETIC SEAL AND A METHOD OF ASSEMBLING

摘要

A hermetic seal between an optical element and a metal mount or housing using a fluoropolymer. The fluoropolymer is dispersed along the interior edge of the metal mount. The metal mount and fluoropolymer are then heated to a temperature exceeding the melting point of the fluoropolymer. Once heated the optical element is pressed into the metal mount and allowed to cool. The metal mount, optical element and thickness of fluoropolymer are sized to provide an interference fit between the metal mount and optical element.

主权项

1. A method for hermetically sealing an optical element to a metal mount of a metal housing, said method comprising:
applying a fluoropolymer to a sealing surface of the metal mount; heating the fluoropolymer and the metal mount to a temperature above the fluoropolymer' s melting point; and pressing an optical element having a sealing surface into the metal mount; wherein the optical element, metal housing and thickness of fluoropolymer are sized to provide an interference fit between the optical element and the metal mount.