Blood sugar levels are measured non-invasively based on temperature measurement. Values of blood sugar levels non-invasively measured by a temperature measuring system are corrected using blood oxygen saturation and blood flow volume. Optical sensors are provided for detecting scattered light, reflected...http://www.google.de/patents/US20050065415?utm_source=gb-gplus-sharePatent US20050065415 - Optical measurement apparatus and blood sugar level measuring apparatus using the same
