focal distance


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Related to focal distance: Effective focal length

focal distance

[′fō·kəl ‚dis·təns]
(optics)
References in periodicals archive ?
The focal distance changes depending on the type of lens (5" and 7.
Its minimized focal distance and mm/pixel ratio maximizes diagnostic quality through improved image resolution.
is designed in stunningly compact metallic profile with retractable structure despite a lens with this versatile focal distance of 35-100 mm (Equivalent to 70-200 mm on a 35mm camera).
As he taped, he adjusted levels of color, focal distance, speed, and size of image.
For our experiment we have used a normal optical objective with a focal distance of 12 mm and a recording rate of 250 frames/second with a maximum resolution of 640 x 480 pixels.
Large monitor configurations have the tendency to prohibit users from having all monitors within the same focal distance," said Michael Mullen, Design Development Manager for Anthro Corporation.
The focal distance of the projection system is reduced by optimizing the configuration of the 11 aspherical plastic and glass lenses.
Typical reading glasses have a finite focal distance of about 16-20 inches but most computer monitors sit, or should sit, 22-30 inches away.

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