- 专利标题: Optical filter and light-emitting device
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申请号: US17286884申请日: 2019-10-23
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公开(公告)号: US12099221B2公开(公告)日: 2024-09-24
- 发明人: Shunichi Kajiya , Hiroshi Tazawa , Kazuhiko Noda , Kyoko Sakurai
- 申请人: Dexerials Corporation
- 申请人地址: JP Tokyo
- 专利权人: Dexerials Corporation
- 当前专利权人: Dexerials Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: KENJA IP LAW PC
- 优先权: JP 18200171 2018.10.24 JP 19055115 2019.03.22
- 国际申请: PCT/JP2019/041538 2019.10.23
- 国际公布: WO2020/085387A 2020.04.30
- 进入国家日期: 2021-04-20
- 主分类号: G02B5/22
- IPC分类号: G02B5/22
摘要:
An optical filter includes a transmission portion transmitting light and an absorption portion absorbing light between a plane of incidence and a plane of emission, and the volume of the transmission portion is larger than the volume of the absorption portion. For the optical filter, when the transmission spectrum S0 of light incident at an incidence angle of 0° and the transmission spectrum S60 of light incident at an incidence angle of 60° are superimposed, the transmittance (%) at an incidence angle of 60° is lower than the transmittance (%) at an incidence angle of 0° by 15% or more for a first wavelength band, and the difference between the transmittance (%) at an incidence angle of 60° and the transmittance (%) at an incidence angle of 0° is 10% or less for a second wavelength band.
公开/授权文献
- US20210382214A1 OPTICAL FILTER AND LIGHT-EMITTING DEVICE 公开/授权日:2021-12-09
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