Hand piece for skin treating apparatus, has two windows that are disposed against each other and separated by space containing gas, and heating unit heating gas between windows, where one of windows directly contacts to skin of patient

摘要

The hand piece has two windows (1, 2) that are disposed against each other and separated by a space containing gas e.g. nitrogen and air, where the windows transmit a light beam (FI). The window (1) directly contacts to the skin of the patient, during treatment. A heating unit heats the gas between the windows. A cooling unit permits to maintain the temperature of the window (1) to a temperature lower than 8 degree Celsius.