A system for detecting fluorescence emitted from a plurality of samples in a sample tray is provided. The system generally includes a plurality of lenses positioned in a linear arrangement, a linear actuator configured to translate the plurality of lenses, an excitation light source for generating an...http://www.google.com/patents/US6965105?utm_source=gb-gplus-sharePatent US6965105 - Scanning system and method for scanning a plurality of samples