Definitions
from The Century Dictionary.
- With the lower focal points all in the same plane: said of interchangeable eyepieces, for microscopes or telescopes, so mounted that whichever one is used the focus remains the same. See
eyepiece .
from the GNU version of the Collaborative International Dictionary of English.
- adjective (Opt.) With the lower focal points all in the same plane; -- said of sets of eyepieces so mounted that they may be interchanged without varying the focus of the instrument (as a microscope or telescope) with which they are used.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective Having multiple
lenses that have correspondingfocal points in the sameplane
Etymologies
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Examples
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Preamble: Yesterday figures close to Wayne Rooney let it be known that he was considering a move from Old Trafford; today the media's parfocal lens is focused on a silly-money transfer to Manchester City.
Sir Alex Ferguson's press conference on Wayne Rooney | 19 October Sean Ingle 2010
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The CRAIC Technologies Universal C-mount Adapter is designed allow a camera or a spectrophotometer, such as the CRAIC Technologies QDI 302 (TM), to be parfocal and parcentral with the eyepieces on the microscope.
ThomasNet News - Today's New Product News ThomasNet News 2010
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My old 70-200 2.8 IS was perfectly parfocal, and allowed this technique ...
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My old 70-200 2.8 IS was perfectly parfocal, and allowed this technique ...
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The CRAIC Technologies Universal C-mount Adapter is designed allow a camera or a spectrophotometer, such as the QDI 302 ™, to be parfocal and parcentral with the eyepieces on the microscope.
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CRAIC Technologies Universal C-mount Adapter for Microscope Cameras CRAIC Technologies Universal C-mount Adapter is designed allow a camera or a spectrophotometer to be parfocal and parcentral with the eyepieces on your microscope.
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All but toy microscopes are parfocal and parcentered.
MAKE Magazine 2009
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; today the media's parfocal lens is focused on a silly-money transfer to Manchester City.
The Guardian World News Sean Ingle 2010
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The Universal C-mount Adapter was introduced at the request of a number of customers who wanted to their camera images to be parfocal and parcentral with the images seen in the microscope eyepieces "states Dr. Paul Martin, President of CRAIC Technologies.
ThomasNet News - Today's New Product News ThomasNet News 2010
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