parfocal

Also found in: Medical, Wikipedia.
(redirected from Parfocal lens)

parfocal

(pɑːˈfəʊkəl)
adj
(General Physics) optics (of a lens) maintaining focus even if magnification is changed
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Mentioned in
References in periodicals archive
Parfocal lens design allows you to maintain precise focus while using the zoom control
Tokina goes super wide
The Vinden CZ 640 has a 35 -105 mm continuous-zoom parfocal lens with a 3x optical zoom, 4x digital zoom, and horizontal field of view (HFOV) from 17.1 degrees to 1.5 degrees.
Sierra-Olympic Introduces LWIR Chassis Camera with Continuous Zoom & Digital Signal Processing
Copyright © 2003-2025 Farlex, Inc Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.