OPTICAL INTERFERENCE FILTER
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United States of America Patent
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Issued Date -
Mar 14, 2024
app pub date -
Sep 12, 2022
filing date -
Sep 12, 2022
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Abstract
In some implementations, an optical interference filter includes a substrate and one or more sets of layers that are disposed on the substrate. Each set of layers includes: a first layer that comprises at least tantalum and oxygen (e.g., a tantalum pentoxide (Ta2O5) material); a second layer that comprises at least aluminum and nitrogen (e.g., an aluminum nitride (AlN) material); and a third layer that comprises at least hydrogen and silicon (e.g., a hydrogenated silicon (Si:H) material). The second layer is disposed between the first layer and the third layer. In some implementations, a first surface of the second layer is disposed on a surface of the first layer, and a second surface of the second layer is disposed on a surface of the third layer.
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