Invention Grant
- Patent Title: Wavelength conversion film, light-emitting member, authentication device, wristband type electronic apparatus and biometric device
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Application No.: US17420631Application Date: 2020-01-16
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Publication No.: US11774653B2Publication Date: 2023-10-03
- Inventor: Mio Watanabe , Kenichi Tabata , Ryo Nakabayashi , Yasuo Miyata
- Applicant: Konica Minolta, Inc.
- Applicant Address: JP Tokyo
- Assignee: KONICA MINOLTA, INC.
- Current Assignee: KONICA MINOLTA, INC.
- Current Assignee Address: JP Tokyo
- Agency: LUCAS & MERCANTI, LLP
- Priority: JP 19005054 2019.01.16
- International Application: PCT/JP2020/001313 2020.01.16
- International Announcement: WO2020/149368A 2020.07.23
- Date entered country: 2021-07-02
- Main IPC: G02B5/22
- IPC: G02B5/22 ; G06V40/10 ; H10K50/12 ; G06F1/16
Abstract:
Disclosed is a wavelength conversion film including at least two or more dyes and absorbing irradiation light to emit light at a longer wavelength than that of the irradiation light. The wavelength conversion film includes a first dye having a maximum absorption wavelength in a red light region, and a second dye absorbing excitation energy of the first dye to emit light in a near infrared region.
Public/Granted literature
Information query
