Illumination device
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United States of America Patent
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Jan 23, 2018
Issued Date -
N/A
app pub date -
Sep 11, 2015
filing date -
Sep 12, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
An illumination device includes a light source, a device body to which the light source is mounted, and an optical member configured to control light distribution of light emitted from the light source. The light source includes LEDs arranged in a matrix form or a linear form. The optical member includes a lens portion configured to control light distribution of the LEDs on a row-by-row basis. The lens portion includes a recessed incidence portion on which the light emitted from the LEDs is incident, an elongated emission portion opposite to the incidence portion, and a pair of reflection portions which interconnects the incidence portion and the emission portion along a longitudinal direction thereof and totally reflects the light incident from the incidence portion. The emission portion is formed to have a plurality of successive convex surfaces when seen in a cross section taken along the longitudinal direction thereof.
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