US 11,992,263 B2
Hair cutting device
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); and Martinus Bernardus van der Mark, Eindhoven (NL)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Filed on Jun. 3, 2022, as Appl. No. 17/831,701.
Application 17/831,701 is a continuation of application No. 15/778,691, granted, now 11,376,069, previously published as PCT/EP2016/081630, filed on Dec. 19, 2016.
Claims priority of application No. 15202208 (EP), filed on Dec. 22, 2015.
Prior Publication US 2022/0287773 A1, Sep. 15, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 18/20 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/203 (2013.01) [A61B 2018/00476 (2013.01); A61B 2018/202 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A hair cutting device for cutting hair on a body of a subject, the hair cutting device comprising: 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 comprises an optical waveguide that is coupled to the light source to receive laser light, wherein a portion of a side wall of the optical waveguide forms a cutting face for contacting hair, and wherein the optical waveguide at the cutting face has a refractive index in a range of 1.48-1.56.