Invention Grant
- Patent Title: Optical filter and method of manufacturing
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Application No.: US18158790Application Date: 2023-01-24
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Publication No.: US11885993B2Publication Date: 2024-01-30
- Inventor: Yuichiro Kubo
- Applicant: Nippon Sheet Glass Company, Limited
- Applicant Address: JP Tokyo
- Assignee: NIPPON SHEET GLASS COMPANY, LIMITED
- Current Assignee: NIPPON SHEET GLASS COMPANY, LIMITED
- Current Assignee Address: JP Tokyo
- Agency: Hamre, Schumann, Mueller & Larson, P.C
- Priority: JP 17145519 2017.07.27
- Main IPC: C09D5/32
- IPC: C09D5/32 ; G02B5/22 ; G02B5/20

Abstract:
An optical filter (1a) includes a UV-IR-absorbing layer and has the following characteristics (i) to (v) when light with wavelengths of 300 nm to 1200 nm is incident at an incident angle of 0°: (i) an average transmittance of 78% or more in the wavelength range of 450 nm to 600 nm; (ii) a spectral transmittance of 1% or less in the wavelength range of 750 nm to 1080 nm; (iii) a spectral transmittance of 1% or less in the wavelength range of 300 nm to 350 nm; (iv) a decreasing spectral transmittance with increasing wavelength in the wavelength range of 600 nm to 750 nm and a first IR cut-off wavelength in the wavelength range of 620 nm to 680 nm; and (v) an increasing spectral transmittance with increasing wavelength in the wavelength range of 350 nm to 450 nm and a first UV cut-off wavelength in the wavelength range of 380 nm to 430 nm.
Public/Granted literature
- US20230204833A1 OPTICAL FILTER Public/Granted day:2023-06-29
Information query
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