| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light irradiation device capable of improving ultraviolet-ray irradiation energy efficiency. <P>SOLUTION: The light irradiation device 500 is provided with a high-pressure discharge lamp 100 having a light emission tube 1 and a sealing part 2, and a reflection mirror 50 reflecting light (111) emitted from the high-pressure discharge lamp 100. The light (111) emitted from the high-pressure discharge lamp 100 has at least a spectrum of an ultraviolet area. Mercury, halogen gas and rare gas exceeding 150 mg/cm<SP>3</SP>are sealed in the light emission tube 1, and a tube wall load of the lamp 100 is not less than 80 W/cm<SP>2</SP>. <P>COPYRIGHT: (C)2007,JPO&INPIT |
