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1. WO2015134205 - TUBULAR LIGHTING SYSTEMS WITH INNER AND OUTER STRUCTURED SURFACES

Publication Number WO/2015/134205
Publication Date 11.09.2015
International Application No. PCT/US2015/016747
International Filing Date 20.02.2015
IPC
F21S 2/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
2Systems of lighting devices, not provided for in main groups F21S4/-F21S10/113
F21V 8/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
8Use of light guides, e.g. fibre optic devices, in lighting devices or systems
CPC
G02B 6/0038
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
0001specially adapted for lighting devices or systems
0011the light guides being planar or of plate-like form
0033Means for improving the coupling-out of light from the light guide
0035provided on the surface of the light guide or in the bulk of it
0038Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
G02B 6/0096
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
0001specially adapted for lighting devices or systems
0096the lights guides being of the hollow type
Applicants
  • 3M INNOVATIVE PROPERTIES COMPANY [US]/[US]
Inventors
  • BENNETT, Robert
  • THOMPSON, David Scott
  • BENOIT, Gilles
  • WHEATLEY, John
  • GEISLER, Karl J. L.
Agents
  • VIETZKE, Lance L.
Priority Data
14/188,68725.02.2014US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) TUBULAR LIGHTING SYSTEMS WITH INNER AND OUTER STRUCTURED SURFACES
(FR) SYSTÈMES D'ÉCLAIRAGE TUBULAIRES DOTÉS DE SURFACES STRUCTURÉES INTÉRIEURE ET EXTÉRIEURE
Abstract
(EN) Lighting systems include a light-transmissive tube and a light source assembly disposed to inject light into a cavity defined by the tube. The cavity extends along a longitudinal axis. At least a portion of the tube includes an inner structured surface facing the cavity, and an outer structured surface facing away from the cavity. The inner structured surface is configured to direct a first portion of the injected light towards the outer structured surface, and a second portion of the injected light back into the cavity. The inner structured surface includes elongated first features and the outer structured surface includes elongated second features. At least one of the elongated first features and the elongated second features are oriented obliquely relative to the longitudinal axis such that they form respective helixes along the tube.
(FR) L'invention concerne des systèmes d'éclairage qui comprennent un tube transmettant la lumière et un ensemble source de lumière disposé de façon à injecter de la lumière dans une cavité définie par le tube. La cavité s'étend le long d'un axe longitudinal. Au moins une partie du tube comprend une surface structurée intérieure faisant face à la cavité, et une surface structurée extérieure orientée à l'opposé de la cavité. La surface structurée intérieure est conçue de façon à diriger une première partie de la lumière injectée vers la surface structurée extérieure, et une seconde partie de la lumière injectée de nouveau dans la cavité. La surface structurée intérieure comprend des premiers éléments allongés et la surface structurée extérieure comprend des seconds éléments allongés. Les premiers éléments allongés et/ou les seconds éléments allongés sont orientés de manière oblique par rapport à l'axe longitudinal de telle sorte qu'ils forment des hélices respectives le long du tube.
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