PROBLEM TO BE SOLVED: To provide a hair growth-stimulating device using light which more efficiently irradiates the skin with light by detecting whether an appropriate irradiation is performed.SOLUTION: The hair growth-stimulating device using light includes an irradiation unit for irradiating the skin with near infrared light and a blood flow amount-measuring means for measuring the amount of blood flowing inside the skin that is irradiated with the near infrared light. According to this hair growth-stimulating device using light, the irradiation with near infrared light is carried out simultaneously with the measurement of the blood flow amount by taking advantage of the phenomenon that the irradiation with near infrared light causes an increase in blood flow amount inside the thus irradiated skin. Thus, it is detected that the irradiation region is appropriately irradiated with near infrared light.COPYRIGHT: (C)2012,JPO&INPIT【課題】適切な照射が行われているかを検知することにより、より効率的に光を照射して育毛を促進することができる光育毛器を提供する。【解決手段】本発明の光育毛器は、皮膚に対して近赤外光を照射する照射部と、近赤外光が照射された皮膚の内部における血流量を測定する血流量測定手段と、を備える。この光育毛器は、近赤外線照射が行われている皮膚内部の血流量が増加するという特性を利用し、近赤外線照射と共に血流量測定を行うため、照射部位に近赤外光が適切に照射されていることを検知することが可能となる。【選択図】図1
