| 摘要 |
PURPOSE: A pen-type light treatment apparatus is provided to convert from a laser beam with wide divergence angle which emits in eclipse shape to a form with a specific divergence angle and circular divergence shape and radiate laser light with maintaining same quantity of light. CONSTITUTION: A pen-type light treatment apparatus comprises: a light-emitting area(100) which includes a laser diode and emitting the laser light; a distance measuring part(200) which is formed in one side of the light-emitting area and measures distance to the laser irradiation object; and an optical divergence portion(300) which is included in end part of the lighting-emitting area and emits the laser light applied from the lighting-emitting area. The laser light radiates a fixed quantity of light even if illumination area varies according to distance of the laser light to the irradiation position. A wavelength of the laser diode is 830nm and has a power range bigger than 1W.
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