LIGHT EMITTING DEVICE; AND MEDICAL SYSTEM, ELECTRONIC APPARATUS, AND INSPECTION METHOD USING SAME
A light emitting device (10) includes a light source (5) configured to emit a primary light (6), a first phosphor (2) that absorbs the primary light (6) and converts the primary light (6) into a first wavelength-converted light (7) having a wavelength longer than that of the primary light (6), and a...
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Main Authors | , , |
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Format | Patent |
Language | English French German |
Published |
11.10.2023
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Subjects | |
Online Access | Get full text |
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Summary: | A light emitting device (10) includes a light source (5) configured to emit a primary light (6), a first phosphor (2) that absorbs the primary light (6) and converts the primary light (6) into a first wavelength-converted light (7) having a wavelength longer than that of the primary light (6), and a second phosphor (3) that absorbs the primary light (6) and converts the primary light (6) into a second wavelength-converted light (8) having a wavelength longer than that of the primary light (6). The first wavelength-converted light (7) is a fluorescence having a light component over an entire wavelength range of 700 nm or more to 800 nm or less. The second wavelength-converted light (8) is a fluorescence having a peak where a fluorescence intensity shows a maximum value in a wavelength range of 380 nm or more to less than 700 nm. The first wavelength-converted light (7) has a 1/10 afterglow time longer than that of the second wavelength-converted light (8). |
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Bibliography: | Application Number: EP20200794717 |