| 摘要 |
PROBLEM TO BE SOLVED: To report necessary information to a user, without using exclusive reporting means, when abnormality occurs in circular movement means such as a rotary body circularly moving a wavelength conversion part such as a phosphor.SOLUTION: In a light source device 1 rotationally driving a fluorescent wheel 4 arranged on the optical path of blue laser light B emitted from an LD module 2 and including phosphor layers 4R, 4G, and 4Y emitting red, green, and yellow lights R, G, and Y by a motor 5, to output at least the light emitted from each phosphor layer to the outside, when the detection result of the rotational state of the motor for the fluorescent wheel is less than a predetermined rotational speed, the fluorescent wheel is retreated from the optical path of the blue laser light B by a solenoid 14, in such a state that the blue laser light emitted from the LD module is outputted to the outside. |
