LIGHT EMITTING SEALED BODY, LIGHT EMITTING UNIT, AND LIGHT SOURCE DEVICE
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United States of America Patent
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Issued Date -
Jul 18, 2024
app pub date -
Mar 27, 2024
filing date -
Dec 21, 2020
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Abstract
A light emitting sealed body includes a housing which stores a discharge gas and is provided with a first opening to which first light is incident and a second opening from which second light is emitted, a first window portion which includes a first window member allowing the first light to be transmitted therethrough and hermetically seals the first opening, and a second window portion which includes a second window member allowing the second light to be transmitted therethrough and hermetically seals the second opening. Each of the first window member and the second window member is hermetically fixed to the housing by a joining material. A protection layer which covers the joining material is provided at at least one of a first joining position between the first window member and the housing and a second joining position between the second window member and the housing.
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