US 12,220,167 B2
Hair cutting device and hair cutting system
Hideki Kasugai, Shiga (JP); and Kenji Narita, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/773,778
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Aug. 28, 2020, PCT No. PCT/JP2020/032542
§ 371(c)(1), (2) Date May 2, 2022,
PCT Pub. No. WO2021/090560, PCT Pub. Date May 14, 2021.
Claims priority of application No. 2019-202761 (JP), filed on Nov. 7, 2019.
Prior Publication US 2023/0000554 A1, Jan. 5, 2023
Int. Cl. A61B 18/20 (2006.01); A45D 26/00 (2006.01); A61B 17/00 (2006.01); A61B 18/00 (2006.01); A61B 18/22 (2006.01)
CPC A61B 18/203 (2013.01) [A45D 26/0009 (2013.01); A61B 2017/00951 (2013.01); A61B 2018/00476 (2013.01); A61B 2018/2023 (2017.05); A61B 2018/2272 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A hair cutting device, comprising:
an optical waveguide; and
a holding member which holds the optical waveguide,
wherein:
the optical waveguide comprises a light irradiator configured to irradiate hair protruding from a skin with light to cut the hair,
the holding member holds the optical waveguide in such a way that light irradiator is exposed from at least one face of the holding member,
the holding member comprises a base and an adhesive member that bonds the optical waveguide to the base,
a refractive index of the adhesive member is lower than a refractive index of the light irradiator,
the adhesive member directly and physically contacts the light irradiator and restricts an amount of light leakage from the light irradiator, and
the holding member holds the optical waveguide in such a manner that the light irradiator is exposed from at least one face of the holding member by exposing a part of optical waveguide from the adhesive member.