Analytical cytology system for detection of small particles - uses systems for illumination, detection, focussing and image forming

摘要

The illumination system uses a coherent light source, e.g. an argon ion laser, and a microscope lens assembly. The detection system which also uses the microscope lens, can detect several fluorescing colourings at various wavelengths, as well as scattered light signals. An X-Y positioning system with two stepper motors is used in the scanning system which determines the positions of the particles. The optical focussing and tracking system uses a contactless infra-red light technique. A confocal laser scanning microscope is used for forming an image.