US Patent 7397602 Fluorescent microscope

A fluorescent microscope is provided which includes a light source having a small light emitting element, an illumination optical system which leads light from the light source onto a specimen, an observation optical system to which fluorescence emitted from the specimen is led, an imager which images the fluorescence led to the observation optical system, and a controller which controls turning on and turning off of the small light emitting element synchronously with imaging timing of the imager.