Webster's Online Dictionary
with Multilingual Thesaurus Translation

 
Earth's largest dictionary with more than 1226 modern languages and Eve!

Common Expressions: EXIT PUPIL

ExpressionsDefinition
Exit pupilThe exit pupil is a concept in optics, and is defined as the minimum diameter of the light beam leaving an eyepiece through which all of the light from the eyepiece passes. For a telescope, it can be calculated by dividing the focal length of the eyepiece by the focal ratio (f number) of the telescope. More simply, it is the diameter of the objective lens divided by the magnification. (references)

Source: compiled by the editor from various references; see credits.

Top

Specialty Expressions: EXIT PUPIL

ExpressionsDomainDefinition
Exit pupilPhysicsThe image of the aperture stop formed by the portion of an optical system on the image side of the stop. Source: European Union. (references)

Source: compiled by the editor from various references; see credits.

Top