| abstract |
An object of the present invention is to avoid burns and pain when performing epilation treatment by irradiating a large number of laser beams to the skin. A light diffusion rod is exchangeably mounted on a head surface, a plurality of through holes are formed by curving the inside, and a light projecting ball lens is inserted into the hole. The light diffusion rod 11 is formed of a transparent dielectric material such as quartz glass or plastic, and the side of the opposite end surface exposed from the head unit 1 and in contact with the skin is defined as an emission end a, and the side attached to the head unit 1 is incident. End b. The inside of the spherical lens 12 faces the opening end surface of the hollow heat sink 13, and the metal package of the semiconductor laser diode 14 is inserted into the base end thereof with the optical axis aligned with the axis of the heat sink 13. The semiconductor laser diode 14 tilts the optical axis so that the focal point of the spherical lens 12 disposed in front of the light diffusing rod 11 facing the incident end b of the light diffusing rod 11 or at the front or rear of the incident end b of the light diffusing rod 11. Place. [Selection] Fig. 2 |