Invention Grant
- Patent Title: Near-infrared cut filter
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Application No.: US14556338Application Date: 2014-12-01
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Publication No.: US09726797B2Publication Date: 2017-08-08
- Inventor: Mitsuyuki Tatemura
- Applicant: Asahi Glass Company, Limited
- Applicant Address: JP Chiyoda-ku
- Assignee: ASAHI GLASS COMPANY, LIMITED
- Current Assignee: ASAHI GLASS COMPANY, LIMITED
- Current Assignee Address: JP Chiyoda-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2012-126855 20120604
- Main IPC: G02B5/22
- IPC: G02B5/22 ; G02B5/26 ; G02B5/28 ; G02B5/20

Abstract:
A near-infrared cut filter according to the present invention includes a repeated layered structure of a high-refractive index layer, a middle-refractive index layer, and a low-refractive index layer, and includes a transmission band where a mean transmittance is 85% or higher in a wavelength range of 400 nm to 700 nm, and a stopband having a width of 100 nm to 280 nm where a mean transmittance is 10% or lower in a wavelength range of 750 nm to 1100 nm.
Public/Granted literature
- US20150085354A1 NEAR-INFRARED CUT FILTER Public/Granted day:2015-03-26
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