LUMINAIRE, AND LUMINAIRE CONTROL METHOD
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United States of America Patent
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Issued Date -
Sep 11, 2014
app pub date -
Aug 28, 2013
filing date -
Mar 11, 2013
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
In a luminaire, a diffusing unit diffuses the light, which has been emitted from a light source unit, according to light transmissibility. A position information obtaining unit obtains position information which at least indicates the position of a person. A luminance obtaining unit obtains the luminance of a luminous part at the position specified in the position information. A calculating unit calculates, according to the light transmissibility and the luminance of the luminous part, a luminance uniformity ratio which indicates the uniformity in the luminance distribution in the luminous part at the position specified in the position information. According to the luminance and the luminance uniformity ratio, a control unit varies the light transmissibility and varies the light output of the light source unit.
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