LIGHT EMITTING DEVICE AND ELECTRONIC APPARATUS USING SAME

Provided is a light emitting device 1 including a light source 2 that emits primary light 6; and a wavelength converter 3 that includes a first phosphor 4 that absorbs the primary light 6 and emits first wavelength-converted light 7, wherein the light emitting device 1 emits output light 15 includin...

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Bibliographic Details
Main Authors FUJIWARA, Chigusa, OSHIO, Shozo, NITTA, Mitsuru
Format Patent
LanguageEnglish
French
German
Published 20.12.2023
Subjects
ADHESIVES
BASIC ELECTRIC ELEMENTS
CHEMISTRY
DEVICES USING STIMULATED EMISSION
DIAGNOSIS
DYES
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
ELECTROTHERAPY
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MAGNETOTHERAPY
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
RADIATION THERAPY
SEMICONDUCTOR DEVICES
SURGERY
ULTRASOUND THERAPY
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Summary:Provided is a light emitting device 1 including a light source 2 that emits primary light 6; and a wavelength converter 3 that includes a first phosphor 4 that absorbs the primary light 6 and emits first wavelength-converted light 7, wherein the light emitting device 1 emits output light 15 including the first wavelength-converted light 7, the first wavelength-converted light 7 is near-infrared light having a fluorescence intensity maximum value within a wavelength range of 700 nm or more and less than 800 nm, the first wavelength-converted light 7 mainly contains a broad fluorescent component 31 based on an electron energy transition of 4T2 → 4A2 of Cr34, and the broad fluorescent component 31 has a fluorescence spectrum half-width that is less than 100 nm.
Bibliography:Application Number: EP20210829347