The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 27, 2020
Filed:
Mar. 26, 2013
Koninklijke Philips N.v., Eindhoven, NL;
Mark Thomas Johnson, Eindhoven, NL;
Petrus Theodorus Jutte, Eindhoven, NL;
Bastiaan Wilhelmus Maria Moeskops, Eindhoven, NL;
Rieko Verhagen, Eindhoven, NL;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
A light based skin treatment device () is provided, comprising a light source () for providing an incident light beam () for treating a skin () by laser induced optical breakdown (LIOB) of hair or skin tissue, a transparent exit window () for allowing the incident light beam () to exit the device (), and an optical system for focusing the incident light beam () into a focal spot () in the hair or skin tissue outside the skin treatment device (). The exit window () comprises an outer surface () having optical scattering properties such that, for a predetermined power and pulse duration of the incident light beam (), when the outer surface () is in contact with a medium having a refractive index equal to a refractive index (n) of the exit window (), a dimension of the focal spot is sufficiently small for a power density of the incident light beam () in the focal spot to exceed a threshold value for inducing a LIOB phenomenon in the focal spot, and when the outer surface () is in contact with a medium having a refractive index equal to a refractive index (n) of air, a dimension of the focal spot is sufficiently large for a power density of the incident light beam () in the focal spot not to exceed the threshold value for inducing a LIOB phenomenon in the focal spot.