CONTROL OF LUMINOUS INTENSITY DISTRIBUTION FROM AN ARRAY OF POINT LIGHT SOURCES

• Main Authors: TISCHLER, MICHAEL, ALBERT, ASHDOWN, IAN
• Format: Patent
• Language: English; French
• Published: 13.06.2013
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; 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; LIGHTING; MECHANICAL ENGINEERING; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; SEMICONDUCTOR DEVICES; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; WEAPONS

A luminaire that provides predetermined luminous intensity distribution, the luminaire comprising an array 100 of light-emitting elements 110 and, disposed over the light-emitting elements, a lens array comprising a plurality of aspheric lens elements 150 each optically coupled to a respective one of light-emitting elements 110 and producing an out-of-focus image thereof, the images combining to generate a predetermined luminous intensity distribution, e.g., providing constant illuminance on a plane. Dans divers modes de réalisation, un réseau de lentilles comprend une pluralité de lentilles asphériques couplées optiquement à un élément d'émission de lumière et produisant une image floue de celui-ci. Les images se combinent pour générer une distribution d'intensité lumineuse cible, par exemple, pour fournir un éclairement lumineux constant sur un plan.