System and method for providing a hermetically sealed lens and window assembly
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United States of America Patent
Stats
-
Jan 31, 2006
Grant Date -
Mar 10, 2005
app pub date -
Aug 10, 2004
filing date -
Sep 8, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system and method of forming a hermetic seal between a lens or window and a lid, which minimizes bending moments, and therefore, bifringance on the window or lens is disclosed. This is accomplished by use of a transition member, specific geometries, and selection of the coefficient of thermal expansion of the materials to insure that the solder joint is in compression on cool down and solder strains are maintained within acceptable limits. The transition member may be soldered or welded to lid or integral through machining.
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