| 摘要 |
PROBLEM TO BE SOLVED: To provide a light irradiation device capable of easily removing hair by projecting low-power light without giving burden on skin.SOLUTION: The light irradiation device includes a light source giving light in a wavelength of 400-1,200 nm as pulses having a full width at half maximum of 600μs, and a light guide distributing the pulses of the light given from the light source with energy intensity of 0.2-0.25J/cmto the distance of 5 mm from the light outgoing surface. |
