Overview

equivalent focal length


Related Overviews

 

'equivalent focal length' can also refer to...

 

More Like This

Show all results sharing this subject:

  • Astronomy and Astrophysics

GO

Show Summary Details

Quick Reference

The focal length of an optical system expressed as if it consisted of a single optical element. It is used to describe the focal length of an enclosed optical system, such as an eyepiece, which has no position from which the focal distance can be measured.

Subjects: Astronomy and Astrophysics.


Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.