Non-contact method for measuring amount of sebum or oil on substrate in real time using fluorescence dye
US6524242B2 · kind B2 · utility
3Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2001 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | Jun 19, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0071
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention provides a non-contact (non-invasive) method for measuring quantity of sebum oil on skin or other substrate. The method includes applying fluorescent lipophilic dye to the substrate site of interest, illuminating the site at the excitation wavelength of the dye, and collecting fluorescent emission of desired wavelength of the dye. Because the measurements are truly non-contact, they can be made in real time on the same sites for any desired length of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.