| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting system capable of radiating most of the light of a light source along the shape of the predetermined radiation range and capable of evening the brightness within the radiation range. SOLUTION: This device is provided with a light source 1, a reflecting mirror 2 for reflecting the light from the light source 1 in a required direction for concentrated radiation, and an optical system 5 for projecting the light from the light source 1 and the reflecting mirror 2 to a target of the radiation, A hollow cylindrical body 4 having a square cross section and formed with plural light reflecting surfaces inside thereof is provided between a part (A), which is formed of the light source 1 and the reflecting mirror 2, and the optical system 5 for projecting the light.
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