This shows grade level based on the word's complexity.
entrance pupil
Save This Word!
This shows grade level based on the word's complexity.
noun Optics.
the image of the aperture viewed from the objective of an optical system limiting the rays that enter the system.
QUIZ
THINGAMABOB OR THINGUMMY: CAN YOU DISTINGUISH BETWEEN THE US AND UK TERMS IN THIS QUIZ?
Do you know the difference between everyday US and UK terminology? Test yourself with this quiz on words that differ across the Atlantic.
Question 1 of 7
In the UK, COTTON CANDY is more commonly known as…
Compare exit pupil.
Words nearby entrance pupil
entrain, entrainment, entrammel, entrance, entranced, entrance pupil, entranceway, entrancing, entrant, entrap, entrapment
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use entrance pupil in a sentence
The field of view 2w retains its importance 427 if the entrance pupil is increased.
The axis of such a cone, which connects the object point with the centre of the entrance pupil, is called the principal ray.
The centre of the projection or the perspective centre is the middle point of the entrance pupil C.