To separately control light distribution of two directions in a simple structure.
The lighting system 100 is provided with a plurality of LEDs 111, an optical lens array 110, and a substrate 112. The optical lens array 110 consists of a platy translucent member and one of the two plate faces makes light incident and the other emits light. Light-refracting parts 130 are formed at a plurality of sites of a plate face on a side emitting light, out of the two plate faces of the optical lens array 110. Each light-refracting part 130 is nearly vertical to the plate face and has a cross section curved in convex as seen from one direction (an X-axis direction) out of two directions (the X-axis direction and a Y'-axis direction) nearly vertical to each other. Each light-refracting part 130 has its cross section curved in concave as seen from the other direction (the Y'-axis direction) out of the two directions. The LEDs 111 are mounted on the substrate 112 in the same arrangement as that of the light-refracting parts 130 on the plate face where the light-refracting parts 130 of the optical lens array 110 are formed.
KOBAYASHI NOBUTAKA
JINNO MASAYUKI
MITSUBISHI ELEC LIGHTING CORP
| JP2010186657A | 2010-08-26 | |||
| JP2010067367A | 2010-03-25 | |||
| JP2010524170A | 2010-07-15 | |||
| JP2007115663A | 2007-05-10 |
| US20050286251A1 | 2005-12-29 |
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