Huygens ocular
Also found in: Dictionary, Thesaurus.
Huy·gens oc·u·lar
(hoy'genz),the compound ocular of a microscope, composed of two planoconvex lenses so arranged that the plane side of each is directed toward the observer.
Huygens,
Christian, Dutch physicist, 1629-1695.Huygens ocular - the compound ocular of a microscope, composed of two planoconvex lenses so arranged that the plane side of each is directed toward the observer.
Huygens principle - used in ultrasound technology.