Luminaire
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United States of America Patent
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May 8, 2018
Issued Date -
N/A
app pub date -
Feb 14, 2017
filing date -
Feb 17, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A luminaire is provided. A main surface of a light-guiding panel included in the luminaire includes a reflecting area having a plurality of approximately conical recesses. An angle θ formed by a lateral surface of each of the recesses and the main surface of the light-guiding panel satisfies a condition defined by a distance D from a center position of a light source to a center position of the reflecting area, a distance H from an illumination target surface to the center position of the light source, an angle γ which the light-guiding panel forms with a horizontal plane, a refractive index n of the light-guiding panel, and a surface roughness Ra of the lateral surface of each of the recesses.
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