| 摘要 |
PROBLEM TO BE SOLVED: To prevent a phosphor from locally degrading.SOLUTION: A fluorescence generating device 10 includes: a plurality of excitation light sources 21, 21, ... for generating respective excitation light beams to generate an excitation beam as a flux of these excitation light beams; a phosphor wheel 41 having a phosphor layer 41d; an optical element 23 that is disposed on the optical path of the excitation beam from the excitation light sources 21, 21, ... to the phosphor wheel 41, receives the excitation beam, and is disposed rotatably; and a rotation actuator 25 for rotating the optical element 23. |
