A confocal scanning microscope comprises a light projecting device with which a small light spot of a light beam is formed on a sample, and a scanning mechanism which causes the light spot to scan the sample in main scanning and sub-scanning directions. A light receiving device condenses the light beam,...http://www.google.com.au/patents/US5065008?utm_source=gb-gplus-sharePatent US5065008 - Scanning microscope and scanning mechanism for the same
