| 摘要 |
PROBLEM TO BE SOLVED: To provide a light radiating device that is able to use the light from a light source lamp at high efficiency and obtain extremely uniform distribution of luminous intensity on the surface area to be irradiated. SOLUTION: This light radiating device is equipped with a rod-shaped light source lamp arranged in opposition to a predetermined surface area to be irradiated and a reflector that has a concave cross section in vertical direction to tube axis of the light source lamp and reflects the light from the light source lamp and irradiates the surface area to be irradiated. The reflector is composed of plural flat mirror elements, wherein each mirror element is arranged so as to irradiate all the surface to be irradiated, in a manner that no reflected light by the mirror elements enters any other mirror elements.
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