Title:
HAIR TREATMENT DEVICE WITH HAIR DETECTOR
Document Type and Number:
WIPO Patent Application WO/2013/027142
Kind Code:
A3
Abstract:
The invention provides a hair treatment device (40) comprising a light-based detector (10) for detecting a hair (22) near a skin surface (21) and a method for detecting a hair (22) near a skin surface (21). The detector (10) comprises a light source (11), optical elements (14, 16, 17, 18) and a polarization-sensitive light sensor (12, 13). The light source (11) generates a light beam (31) and the optical elements (14, 16, 17, 18) focus the light beam (31) at a hair (22) near the skin surface (21). The polarization-sensitive light sensor (12, 13) is provided for detecting light interacted with the hair (22) or the skin surface (21) and having a predefined linear polarization. The light source (11) and/or the optical elements (14, 16, 17, 8) are arranged to cause the light beam (31), when reaching the skin surface (21), to have a polarization direction which is time-invariant and spatially variant in cross-sections of the 10 light beam.
Inventors:
VARGHESE BABU VARGHESE (NL)
VERHAGEN RIEKO (NL)
UZUNBAJAKAVA NATALLIA EDUARDAUNA (NL)
VERHAGEN RIEKO (NL)
UZUNBAJAKAVA NATALLIA EDUARDAUNA (NL)
Application Number:
PCT/IB2012/054033
Publication Date:
November 07, 2013
Filing Date:
August 08, 2012
Export Citation:
Assignee:
KONINKL PHILIPS NV (NL)
VARGHESE BABU VARGHESE (NL)
VERHAGEN RIEKO (NL)
UZUNBAJAKAVA NATALLIA EDUARDAUNA (NL)
VARGHESE BABU VARGHESE (NL)
VERHAGEN RIEKO (NL)
UZUNBAJAKAVA NATALLIA EDUARDAUNA (NL)
International Classes:
A61B18/20; A61B5/00; B26B21/00
Foreign References:
| US20100063491A1 | 2010-03-11 | |||
| US7064828B1 | 2006-06-20 | |||
| US20100141939A1 | 2010-06-10 | |||
| US20070021807A1 | 2007-01-25 |
Attorney, Agent or Firm:
COOPS, Peter et al. (Building 44, AE Eindhoven, NL)
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