TUBULAR LIGHT EMITTING DEVICE

A tubular light comprises an elongate light source (10) and a tubular housing (18) around the light source. An optical beam shaping arrangement (20) is provided within the housing. It has an effective focal distance, in the plane perpendicular to the length axis, which varies in dependence on the an...

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Bibliographic Details
Main Authors GOMMANS, Hendrikus, Hubertus, Petrus, VAN GHELUWE, Jochen, Renaat
Format Patent
LanguageEnglish
French
German
Published 17.04.2019
Subjects
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
LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL
LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE
LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATINGELEMENTS
LIGHTING
MECHANICAL ENGINEERING
NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE
STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR
WEAPONS
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Summary:A tubular light comprises an elongate light source (10) and a tubular housing (18) around the light source. An optical beam shaping arrangement (20) is provided within the housing. It has an effective focal distance, in the plane perpendicular to the length axis, which varies in dependence on the angular position around the optical beam shaping arrangement. The effective focal distance is longer for light in a light output optical axis direction than for light output laterally to the sides of the light output optical axis. This means the beam shaping, e.g. collimation, is greater at the edges of the light output beam than in the middle, so there is light mixing within the output beam.
Bibliography:Application Number: EP20160722132