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zoom Dictionary Terms
variable-focus lens
A lens assembly containing several movable elements to permit changing of the effective focal length (EFL). Unlike a zoom lens, a variable-focus lens may require refocusing with each change of EFL. See multifocal lens.
multifocal lens
A lens with internally adjustable elements to produce a range of focal lengths. Unlike a true zoom lens, a multifocal lens...
wide-angle lens
A wide-angle lens is a type of camera lens that has a shorter focal length than a standard or normal lens, allowing it to...
zoom
To control, by magnifying or reducing, the size of a televised image, either electronically or optically.
image jump
In optics, the term image jump refers to a displacement or shift in the apparent position of an image when a change occurs...
optically compensating zoom system
A variable focal length lens system that retains the object in focus as one or more lenses move as a unit along its optical...
zoom lens
An optical system of variable focal length, the focal plane remaining in a fixed position. This result is achieved by moving...
virtual histology
Virtual histology refers to the use of digital technology and computational methods to simulate or recreate histological...
machine vision lens
A machine vision lens is a specialized optical lens designed for use in machine vision systems, which are used for automated...
(9 results found)
April 2024
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