Optical: systems and elements – Lens – With support
Reexamination Certificate
2006-01-31
2006-01-31
Dang, Hung Xuan (Department: 2873)
Optical: systems and elements
Lens
With support
C359S811000, C359S819000
Reexamination Certificate
active
06992844
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.
REFERENCES:
patent: 6404939 (2002-06-01), Wada
patent: 6657798 (2003-12-01), Kabelevs et al.
DeSantis Anthony
Pollock John A.
Dang Hung Xuan
Martinez Joseph
Nieves Peter A.
Sheehan Phinney Bass & Green P.A.
Special Hermetic Products, Inc.
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