LIGHT IRRADIATION DEVICE, LIGHT IRRADIATION PROGRAM, AND DRIVE METHOD FOR LIGHT IRRADIATION DEVICE

To determine in real time an appropriate dose of light with which cancer cells are to be irradiated.SOLUTION: In a state in which a measured fluorescence life L does not vary even if a radiated dose P is gradually increased (time 0 to time t1), a dose P to be radiated is increased gradually. In a state in which the measured fluorescence life L is decreasing gradually (time t1 to time t2), the dose P to be radiated is increased gradually. After that, when a state in which the measured fluorescence life L does not vary emerges (t2), a dose of light at the time of the emergence is used as an appropriate dose for irradiating cancer cells to destroy the cancer cells.SELECTED DRAWING: Figure 9 【課題】がん細胞へ照射する光の適切な線量をリアルタイムに判断する。【解決手段】照射する線量Ｐを徐々に増加しても、測定された蛍光寿命Ｌに変化していない状態（時間０〜時間ｔ１）では、照射する線量Ｐを徐々に増加する。測定された蛍光寿命Ｌが徐々に減少している状態（時間ｔ１〜ｔ２）では、照射する線量Ｐが徐々に増加する。その後、測定された蛍光寿命Ｌに変化しない状態になった時（ｔ２）、その時の光の線量を、適切な線量として、がん細胞に照射し、がん細胞を破壊させる。【選択図】図９