Stuck on a problem? Get great tutoring at an affordable price with Chegg. Click here to join and get your 1st 30 minutes Free!

Entrance pupil

From Biology-Online Dictionary
Jump to: navigation, search

Entrance pupil

(Science: microscopy) The apparent size of the limiting aperture of a lens or lens system (properly that of the diaphragm), as seen from the object plane. This can shift and become a complex matter in some circumstances. In a properly set up microscope system it should be that of the substage iris diaphragm.