An apparatus for optical sensing of samples includes an optical source, an optical assembly, a sample holder, an objective lens, and a detector. The objective lens collimates light emitted by the sample. Preferably, the optical assembly rotates about an axis, allowing the sensing apparatus to sense results...http://www.google.com/patents/US20070205365?utm_source=gb-gplus-sharePatent US20070205365 - Sensing apparatus having optical assembly that collimates emitted light for detection
