Lighting device with optical reflector, luminaire having such lighting device and method of manufacturing a compact optical reflector
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United States of America Patent
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Jun 5, 2018
Issued Date -
May 28, 2015
app pub date -
Jun 3, 2013
filing date -
Jun 4, 2012
priority date (Note) -
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Abstract
The invention relates to a lighting device comprising: an optical reflector (200, 500) which has an interior surface (201); and a light source (205, 505); wherein the interior surface has a plurality of facets (203) that form a Fresnel structure-like reflecting surface (202), and the interior surface may further have a cone (504) so as to avoid light from the light source being reflected back to the light source; wherein at least part of the light from the light resource is reflected by the optical reflector into an output direction. The invention also relates to a luminaire which comprises the lighting device according to the invention. The invention further relates to a method of manufacturing an optical reflector for a spot lighting lamp. The method comprises forming (S01) a bowl-like structure that has an opening for emitting light and that has a Fresnel structure on the interior surface of the bowl-like structure.
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