| 摘要 |
PROBLEM TO BE SOLVED: To provide a light irradiation device that can suppress temperature increase of a flash discharge tube while maintaining the capability thereof.SOLUTION: A light irradiation device has a flash discharge pipe 10, a capacitor 13 for accumulating electricity for making the flash discharge pipe discharge, a photometric part 16 for performing photometry on light emitted from the flash discharge tube, and a light emission controller which is a light emission controller 19 for controlling the flash discharge pipe to emit light repetitively and makes the flash discharge pipe emit light so that the total light emission amount of a light amount measured in each light emission operation by the photometric part. The light emission controller is configured so that the light amount in at least one light emission operation at an initial stage during a light emission period for which the flash discharge pipe is made to emit light repetitively is larger than light amounts in subsequent light emission operations after the at least one light emission operation.SELECTED DRAWING: Figure 4 |
