Invention Grant
- Patent Title: Light emitting device and plant cultivation method
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Application No.: US16572524Application Date: 2019-09-16
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Publication No.: US10952382B2Publication Date: 2021-03-23
- Inventor: Mika Amiya , Kazushige Fujio , Tomokazu Suzuki
- Applicant: NICHIA CORPORATION
- Applicant Address: JP Anan
- Assignee: NICHIA CORPORATION
- Current Assignee: NICHIA CORPORATION
- Current Assignee Address: JP Anan
- Agency: Hunton Andrews Kurth LLP
- Priority: JP2016-128835 20160629
- Main IPC: C09K11/77
- IPC: C09K11/77 ; A01G7/04 ; A01G22/00 ; A01G31/00 ; H01L33/50

Abstract:
Provided is a light emitting device that includes a light emitting element having a light emission peak wavelength ranging from 380 nm to 490 nm, and a fluorescent material excited by light from the light emitting element and emitting light having at a light emission peak wavelength ranging from 580 nm or more to less than 680 nm. The light emitting device emits light having a ratio R/B of a photon flux density R to a photon flux density B ranging from 2.0 to 4.0 and a ratio R/FR of the photon flux density R to a photon flux density FR ranging from 0.7 to 13.0, the photon flux density R being in a wavelength range of 620 nm or more and less than 700 nm, the photon flux density B being in a wavelength range of 380 nm or more and 490 nm or less, and the photon flux density FR being in a wavelength range of 700 nm or more and 780 nm or less.
Public/Granted literature
- US20200008363A1 LIGHT EMITTING DEVICE AND PLANT CULTIVATION METHOD Public/Granted day:2020-01-09
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