Question #acc69

1 Answer
SCooke
Feb 24, 2018

It is the largest lens, the first one that light enters.

Explanation:

In optical engineering, the objective is the optical element that gathers light from the object being observed and focuses the light rays to produce a real image.
https://lco.global/spacebook/refracting-telescopes/

The lens or system of lenses in a telescope or microscope that is nearest the object being viewed.
https://www.vocabulary.com/dictionary/objective lens

Related questions
Impact of this question
227 views around the world
You can reuse this answer
Creative Commons License