Patent ID: 7250045

Claim:
A dermatologic apparatus comprising a self-contained housing having an output aperture and configured to be held in a person's hand for manipulation to perform a hair removal dermatologic procedure, a light source within the housing for providing light of pulse duration t in the range of 4-100 J/cm 2 and having sufficient fluence at the output aperture to effect hair removal at a target area on a human, a drive circuit within the housing for powering the light source, and an optical diffuser within the housing for diffusing the light so that the light emitted from the output aperture has an integrated radiance in Jcm −2 sr −1 less than 10t 1/3 when the wavelength of the light is 600 to 700 nm, less than 10*10 (λ-700)/515 t 1/3 when the wavelength λ of the light is 700 to 1060 nm, and less than 50t 1/3 when the wavelength of the light is 1060 to 1200 nm where t is less than 10 seconds.