Optical sensor and method for identifying the presence of skin and the pigmentation of skin
US9687671B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2009 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Oct 17, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/0662
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apparatus and methods are provided to control a device, such as a light emitting dermatologic or cosmetic treatment device, and ensure that the device is in contact with skin while also determining the pigmentation level of skin. One or more light sources contact the skin and one or more detectors measure spectral remission from the skin. The obtained remission measurements are compared with known skin spectral remission values, and calibration allows measurements of absolute remission to be converted to fractional remission values. Skin pigmentation levels are compared to known base-line levels to determine and control appropriate treatment parameters. A temperature sensor allows correction for temperature variations. The apparatus may or may not be incorporated into the treatment device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.