Before revision: In a A cathodoluminescence (CL) microscope combines a regular (light optical) microscope with a cathode-ray tube.
After revision: Optical cathodoluminescence microscopeThin section of quartz from a hydrothermal vein – upper in CL and lower in transmitted light A cathodoluminescence (CL) microscope combines a regular (light optical) microscope with a cathode-ray tube.