Abbe condenser
noun/ˈɑ.bə kənˈdɛn.sə(ɹ)/ · /ˈæ.bi kənˈdɛn.səɹ/
Etymology Named for the German physicist Ernst Abbe.
1
A condenser composed of two lenses which concentrates and controls the light which passes through an examined specimen before that light enters the objective of a microscope, used to obtain high levels of magnification.