Infrared detector package
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United States of America Patent
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Jan 20, 2009
Issued Date -
N/A
app pub date -
May 29, 2007
filing date -
Jan 25, 2007
priority date (Note) -
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Abstract
In an infrared detector package, a first annular metallized layer (6a, 6b) is formed along the annular shoulder (4a) of a casing member (4), and a second annular metallized layer (7) is formed along the annular mating surface of a window member (5). Brazing material (8) is integrally interposed between the first and second metallized layers. At least one of the first and second annular metallized layers comprises a mutually separated concentric portions (6a, 6b), and the brazing material extends across the two mutually separated concentric portions. During the manufacturing process, brazing material is deposited on one of the two mutually separated concentric portions, and is allowed to flow along the opposing metallized surface until the brazing material reaches the other of the two mutually separated concentric portions. Because the brazing material exposes a clean metallic surface as it flows so that the brazing material is properly interposed between the opposing annular metallized layer and the other of the mutually separated concentric portions of the corresponding annular metallized layer without any intervention of dross, oxidized film or other foreign matters. Thereby the brazing material ensures a favorable bonding and sealing performance.
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