Laser beam irradiation instrument

A - Human Necessities – 61 – N

Patent

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Details

A61N 5/067 (2006.01) A61B 18/20 (2006.01) H01S 5/42 (2006.01)

Patent

CA 2393432

The objective of the present invention is to irradiate a relatively large skin area evenly with laser beams. A plurality of semiconductor laser diodes are arranged to form two lines with the semiconductor laser diodes of one line staggered with those of the other line, and the semiconductor laser diodes of each line are so inclined that their laser beams may focus on a single line. With this arrangement the plurality of laser beams provide a linear distribution of narrow beam, and the scanning area on the skin can be expanded accordingly. The beauty treatment on the skin or the depilation treatment can be expedited significantly. Advantageously the focussing points of the laser beams are distributed at an increased density, and the irradiation strength averages everywhere to attain the even beauty treatment.

Cette invention concerne une irradiation uniforme de la peau par faisceau laser. Deux lignes de diodes laser à semi-conducteurs sont disposées en quinconce. En d'autres termes, les diodes de la première ligne se trouvent dans un plan situé à mi-distance entre deux diodes de l'autre ligne. Les faisceaux d'une ligne de diodes laser à semi-conducteurs font un angle par rapport aux faisceaux de l'autre ligne, de sorte que les points focaux des faisceaux laser peuvent être amenés en ligne. Comme un grand nombre de faisceaux laser sont disposés en ligne, la zone de la peau irradiée momentanément par les faisceaux laser se trouve accrue, ce qui améliore l'efficacité du traitement esthétique, qu'il s'agisse de soins cosmétiques ou d'épilation. Par ailleurs, comme la densité de distribution des points focaux des faisceaux laser est élevée et que l'intensité de l'irradiation locale est répartie en moyenne, on obtient un traitement cosmétique uniforme.

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