Wavelength conversion apparatus and wavelength conversion method
US10761400B2 · kind B2 · utility
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3Claims
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Key dates
| Filing date | Sep 18, 2019 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Sep 18, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/50
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A wavelength conversion apparatus and a wavelength conversion method that can stably output wavelength converted light for a long time are provided. A wavelength conversion apparatus 100 according to an aspect of the present disclosure includes a casing 10, a wavelength conversion element 25 disposed inside the casing 10 and configured to convert a wavelength of incident light and output light with the converted wavelength, a first port 11 that introduces a first gas containing 99.9% or more of a nitrogen gas inside the casing 10, and a second port 12 that introduces a second gas containing 1% or more of an oxygen gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.