Lighting system with light guiding body having trivalent cerium luminescent material

Lighting system with light guiding body having trivalent cerium luminescent material

A lighting system includes a plurality of light sources; an elongated luminescent body defining a length (L) and a height or diameter (H), and having a light input face, a light output face, and at least one side face bridging the height or diameter (H); a garnet type A3B5O12 luminescent material in...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Hannen, Gerardus Everardus Marie, De Boer, Dirk Kornelis Gerhardus, Bruls, Dominique Maria
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF
HEATING
INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED
INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO USESOR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
LIGHTING
MECHANICAL ENGINEERING
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR
WEAPONS
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Beschreibung
Zusammenfassung:A lighting system includes a plurality of light sources; an elongated luminescent body defining a length (L) and a height or diameter (H), and having a light input face, a light output face, and at least one side face bridging the height or diameter (H); a garnet type A3B5O12 luminescent material including trivalent cerium, provided in the elongated luminescent body with a height dependent concentration range defined by a minimum concentration ymin=0.036*x−1 and a maximum concentration ymax=0.17*x−1, where y is the trivalent cerium concentration in % relative to the A element, and x is the height (H) in mm; at least one heat transfer elements in thermal contact with the elongated luminescent body; and a reflector provided opposite the light sources on the elongated luminescent body. The garnet type A3B5O12 luminescent material converts at least part of light from the light sources into converted light.