| 摘要 |
<P>PROBLEM TO BE SOLVED: To irradiate a fluorescent material again with light which was not used for the excitation of a fluorescent material for the purpose of reuse. <P>SOLUTION: A light source device includes: a blue light-emitting laser diode 11-B as an excitation light source; a fluorescent material 15-G of green light emission which emits light by receiving the radiation of blue light B emitted from the blue light-emitting laser diode 11-B; and a light tunnel 12 functioning as a re-irradiation system made to re-irradiate with the excitation light either transmitted or reflected without contributing to the excitation of the fluorescent material among the excitation light radiated on the fluorescent material of the green light emission as the excitation light of the same fluorescent material 15-G. <P>COPYRIGHT: (C)2012,JPO&INPIT |
