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US 6,475,144 B1Granted
Non-contact method for measuring amount of skin sebum or oil in real time using fiber optic probe
AssigneeUnilever Home & Personal Care USA, Division of Conopco, Inc.
InventorsArchana K Sah, Leonard Van Gorkom, Zhenhe Zhu, Thomas Hancewicz
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Abstract
The invention provides a non-contact process for measuring amount of sebum or oil on skin or other substrate. Process is preferably done in vivo because of ability to measure formation of sebum/oil on skin in real time.
Claims8
A non-contact process or method for measuring sebum or oil on skin or other substrates comprising:
- (a) choosing a desired spot on the body of a subject;
- (b) positioning a fiber optic probe on the spot;
- (c) reflecting infrared light in the 400 to 10,000 cm−1 wavenumber range against said spot;
- and
- (d) measuring an infrared reflectance spectrum in said wavenumber range.
2 more elements
A non-contact process or method for measuring sebum or oil on skin or other substrates comprising:
- (a) choosing a desired spot on the body of a subject;
- (b) positioning an imaging device on the spot;
- (c) reflecting infrared lights in the 400 to 10,000 cm−1 wavenumber range against said spot;
- and
- (d) measuring by imaging in said wavenumber range.
2 more elements
Dependencies are inferred from the claim text.