Importance

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Abstract

A hermetically sealed optical-semiconductor container in which an optical-semiconductor element is accommodated, comprising a frame 1 made of a metal, an insulating material or a composite material of a metal and an insulating material, a first bottom plate 11 fixed to the frame, and a second bottom plate 12 fixed to opposite surface of the first bottom plate to the frame, either of the first and second bottom plates being made of a metal and having a smaller Young's modulus than the other. For example, the first bottom plate 11 is not less than 25.times.10.sup.3 kg/mm.sup.2 in Young's modulus, and the second bottom plate 12 is not greater than 15.times.10.sup.3 kg/mm.sup.2. An optical-semiconductor element, an electronic cooling device and the like are mounted in this container, thus producing an optical-semiconductor module free from degradation of an electronic cooling element nor deviation of an optical axis occurs.

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First Claim