| 摘要 |
PROBLEM TO BE SOLVED: To provide a light source device capable of accurately performing alignment and suppressing degradation in a fluorescent member.SOLUTION: A light source device comprises: a light source array having a plurality of excitation light sources 21 arranged in an array; a fluorescent member 3; first and second lenses 41 and 42 sharing an optical axis therebetween and arranged in parallel; and a dichroic mirror 5 arranged between the first and second lenses 41 and 42. The first lens 41 collects excitation rays emitted from the excitation light sources 21 to convert the excitation rays to parallel rays. The second lens 42 collects the excitation rays emitted from the first lens 41 and transmitted by the dichroic mirror 5 onto the fluorescent member 3, and converts fluorescent rays radiated from the fluorescent member 3 to parallel rays. The dichroic mirror 5 reflects the fluorescent rays converted into the parallel rays by the second lens 42 in a direction inclined with respect to a direction in which the first and second lenses 41 and 42 are arranged in parallel, and the excitation rays emitted from the second lens 42 are incident on the fluorescent member 3 in a defocused state. |
