Hair color measurement and treatment

A - Human Necessities – 61 – B

Patent

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Details

A61B 5/00 (2006.01) A61Q 5/10 (2006.01) G01J 3/46 (2006.01) G01N 21/25 (2006.01)

Patent

CA 2491122

A method to change the color of hair. The method includes measuring an initial reflectance spectrum [Fig 1a (10)] of a sample of the hair and analyzing a contribution of a plurality of hair factors to the initial reflectance spectrum. The method also includes calculating a hair treatment based on another reflectance spectrum. A system to measure a reflectance spectrum of a sample includes an integrating sphere (12) having a sampling port (14) and an inner surface (16) and a window disposed (18) near the sampling port. The window is configured for being placed in close contact with the sample. The system also includes a light source (20) configured to project light onto the sample via the window and a light detector (22) configured to analyze light reflected from the inner surface (16) to produce the reflectance spectrum of the sample.

L'invention concerne un procédé de changement de coloration des cheveux. Ledit procédé consiste à mesurer le spectre initial de réflectance d'un échantillon de cheveux, à analyser la contribution d'une pluralité de facteurs capillaires naturels par rapport au spectre initial de réflectance, et à calculer un traitement capillaire en fonction d'un autre spectre de réflectance. Un système permettant de mesurer le spectre de réflectance d'un échantillon comprend une sphère d'intégration dotée d'un orifice d'échantillonnage, d'une surface intérieure et d'une fenêtre disposée à proximité dudit orifice d'échantillonnage. La fenêtre est configurée pour être placée en contact étroit avec l'échantillon. Le système comprend également une source lumineuse configurée afin de projeter une lumière sur l'échantillon via la fenêtre et un détecteur de lumière est configuré afin d'analyser ladite lumière à partir de la surface intérieure afin de produire le spectre de réflectance de l'échantillon.

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