optical condenser(n = noun.artifact) condenser - lens used to concentrate light on an object;
is a kind of lens, lens system, lense
has particulars: abbe condenser

abbe condenser, bypass condenser, condenser, condenser microphone, electrical condenser, electrolytic condenser, liebig condenser, optical, optical aberration, optical activity, optical bench, optical cable, optical crown, optical crown glass, optical device, optical disc, optical disk, optical fiber, optical fibre, optical flint, optical fusion, optical glass, optical illusion, optical instrument, optical lens, optical maser, optical opacity, optical phenomenon, optical prism, optical pyrometer, optical telescope, reflux condenser