Condenser (microscope)
（重定向自Abbe condenser）
![A condenser (right) and its respective diaphragm (left)](/Images/godic/202412/16/Kondenzor0945.jpg")
![A condenser between the stage and mirror of a vintage microscope](/Images/godic/202412/16/Kondenzor010945.jpg")
![The sub-stage condenser focuses light through the specimen to match the aperture of the objective lens system.](/Images/godic/202412/16/Condenser_diagram.svg0945.png")
A condenser is one of the main components of the optical system of many transmitted light compound microscopes. A condenser is a lens that serves to concentrate light from the illumination source that is in turn focused through the object and magnified by the objective lens. It is a basic component of almost all compound light microscopes manufactured since the 19th Century. An equivalent condenser, which focuses an electron beam, is a basic component of both transmission and scanning electron microscopes.