The present invention uses a high signal to noise ratio method and apparatus to analyze a characteristic of a biological object, such as blood glucose level. The method and apparatus can also have surgical applications, such as coagulation or ablation of a pattern on a biological object. ...http://www.google.co.uk/patents/US20040087844?utm_source=gb-gplus-sharePatent US20040087844 - Apparatus and method for pattern delivery of radiation and biological characteristic analysis
