空気におけるＬＩＯＢを回避する光ベースの皮膚処理デバイス

Japanese Patent JP5735719

B2

A light based skin treatment device (10, 20) is provided, comprising a light source (18) for providing an incident light beam (21) for treating a skin (30) by laser induced optical breakdown (LIOB) of hair or skin tissue, a transparent exit window (14) for allowing the incident light beam (21) to exit the device (10, 20), and an optical system for focusing the incident light beam (21) into a focal spot (221, 222) in the hair or skin tissue outside the skin treatment device (10, 20). The exit window (14) comprises an outer surface (41, 42, 43, 44) having optical scattering properties such that, for a predetermined power and pulse duration of the incident light beam (21), when the outer surface (41, 42, 43, 44) is in contact with a medium having a refractive index equal to a refractive index (n1) of the exit window (14), a dimension of the focal spot is sufficiently small for a power density of the incident light beam (21) in the focal spot to exceed a threshold value for inducing a LIOB phenomenon in the focal spot, and when the outer surface (41, 42, 43, 44) is in contact with a medium having a refractive index equal to a refractive index (n2) of air, a dimension of the focal spot is sufficiently large for a power density of the incident light beam (21) in the focal spot not to exceed the threshold value for inducing a LIOB phenomenon in the focal spot.

WO/2022/185627	HAIR REMOVAL DEVICE AND IRRADIATION POSITION CORRECTION METHOD
WO/2002/089689	A METHOD OF STIMULATING COLLAGEN FORMATION
JP7378490	Pigment therapy system and how to use it

Yonson Marc Thomas
Yutte Petrus Theodorus
Mouscops Bastien Wilhelms Maria
Verhachen Rieko

JP2014560514A

June 17, 2015

March 26, 2013

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KONINKLIJKE PHILIPS N.V.

A61N5/067; A45D26/00; A45D44/22; A61B18/20

JP2007501047A
JP2009541002A
JP2009523556A

Susumu Tsugaru
Fueda Shusen
Hirokazu Komatsu

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