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:
May. 28, 2024
Filed:
Jun. 03, 2022
Koninklijke Philips N.v., Eindhoven, NL;
Yannyk Parulian Julian Bourquin, Eindhoven, NL;
Rieko Verhagen, Eindhoven, NL;
Bastiaan Wilhelmus Maria Moeskops, Eindhoven, NL;
Kiran Kumar Thumma, Eindhoven, NL;
Joseph Petrus Henricus Ter Borch, Eindhoven, NL;
Mark Thomas Johnson, Eindhoven, NL;
Arnoldus Johannes Martinus Jozeph Ras, Eindhoven, NL;
Gerhardus Wilhelmus Lucassen, Eindhoven, NL;
Martinus Bernardus van der Mark, Eindhoven, NL;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
A hair cutting device for cutting hair on a body of a subject includes a light source for generating laser light at one or more specific wavelengths corresponding to wavelengths absorbed by one or more chromophores in hair; and a cutting element that has an optical waveguide that is coupled to the light source to receive laser light. A portion of a side wall of the optical waveguide forms a cutting face for contacting hair where, at least at the cutting face, the optical waveguide has a refractive index that is equal to or lower than the refractive index of hair and higher than the refractive index of skin.