Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Fumio Sato
Yoshimasa Matsushita
Date of Patent
September 19, 2023
Patent Application Number
17528224
Date Filed
November 17, 2021
Patent Citations
Patent Primary Examiner
CPC Code
Patent abstract
Provided is a small-diameter chalcogenide glass material having excellent weather resistance and mechanical strength and being suitable as an optical element for an infrared sensor. The chalcogenide glass material has an unpolished side surface, a pillar shape with a diameter of 15 mm or less, and a composition of, in terms of % by mole, 40 to 90% S+Se+Te and an inside of the glass material is free of stria with a length of 500 μm or more.
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