Hans-Joachim Krebs;Pavel Zakharov;Andreas Caduff;Mark Stuart Talary
发明人:
Andreas Caduff,Hans-Joachim Krebs,Mark Stuart Talary,Pavel Zakharov
申请号：
US13581191
公开号：
US20130053654A1
申请日:
2010.02.26
申请国别(地区):
US
年份:
2013
代理人:
摘要：
A parameter affecting the absorptivity or the concentration of blood in tissue is measured using a semiconductor light source (7) and a light detector (8). The semiconductor light source (7) is operated at several operating conditions, at which it has different temperatures and therefore different emission spectra. In particular, the operating conditions correspond to different time intervals after switching the light source (7) on, while the light source (7) has not yet reached thermal equilibrium. This allows to perform a spectroscopic measurement using one light source only, which increases accuracy and reduces device cost.
