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WAVELENGTH CONVERTER AND LIGHT EMITTING DEVICE PROVIDED THEREWITH
Provided is a wavelength converter (10) including a phosphor ceramic (11) containing a first phosphor that emits fluorescence due to a parity-forbidden transition, and a phosphor part (12) containing a second phosphor that emits fluorescence due to a parity-allowed transition. A main surface of the phosphor ceramic (11) has a concave and convex structure including a plurality of convex parts (11b) and a plurality of concave parts (11c). The phosphor part (12) is arranged inside the plurality of concave parts (11c) in the phosphor ceramic (11). Also provided is a light emitting device (100) including the wavelength converter (10), and a solid-state light source (20) that emits light with which the wavelength converter (10) is irradiated and which has a light emission peak within a wavelength range of 400 nm or more and less than 500 nm.
WAVELENGTH CONVERTER AND LIGHT EMITTING DEVICE PROVIDED THEREWITH
Provided is a wavelength converter (10) including a phosphor ceramic (11) containing a first phosphor that emits fluorescence due to a parity-forbidden transition, and a phosphor part (12) containing a second phosphor that emits fluorescence due to a parity-allowed transition. A main surface of the phosphor ceramic (11) has a concave and convex structure including a plurality of convex parts (11b) and a plurality of concave parts (11c). The phosphor part (12) is arranged inside the plurality of concave parts (11c) in the phosphor ceramic (11). Also provided is a light emitting device (100) including the wavelength converter (10), and a solid-state light source (20) that emits light with which the wavelength converter (10) is irradiated and which has a light emission peak within a wavelength range of 400 nm or more and less than 500 nm.
WAVELENGTH CONVERTER AND LIGHT EMITTING DEVICE PROVIDED THEREWITH
WELLENLÄNGENWANDLER UND LICHTEMITTIERENDE VORRICHTUNG DAMIT
CONVERTISSEUR DE LONGUEUR D'ONDE ET DISPOSITIF ÉLECTROLUMINESCENT LE COMPRENANT
NITTA MITSURU (author) / SHIGITANI RYOSUKE (author) / MIYAZAKI EMI (author) / HIRANO TORU (author)
2024-08-14
Patent
Electronic Resource
English
IPC:
G02B
Optische Elemente, Systeme oder Geräte
,
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
/
B32B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
,
Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse
/
C04B
Kalk
,
LIME
/
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
/
F21S
Ortsfeste Leuchten
,
NON-PORTABLE LIGHTING DEVICES
/
F21V
FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF
,
Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen
/
F21Y
Index-Schema in Verbindung mit den Unterklassen F21K, F21L, F21S und F21V, betreffend die Form oder die Art der Lichtquellen oder die Farbe des emittierten Lichts
,
INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
/
G03B
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM
,
Geräte oder Anordnungen zum Aufnehmen, Projizieren oder Betrachten von Fotografien
/
H01S
Vorrichtungen, die stimulierte Emission verwenden
,
DEVICES USING STIMULATED EMISSION
European Patent Office | 2017
|Wavelength converter and light-emitting device having same
European Patent Office | 2020
|