Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having multiple lenses that have corresponding focal points in the same plane

from the GNU version of the Collaborative International Dictionary of English

  • adj. 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 The Century Dictionary and Cyclopedia

  • 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.

Etymologies

Sorry, no etymologies found.

Examples

  • 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

  • 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

  • My old 70-200 2.8 IS was perfectly parfocal, and allowed this technique ...

    News: Digital Photography Review (dpreview.com)

  • 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.

    physicsworld.com: all content

  • 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.

    physicsworld.com: all content

  • All but toy microscopes are parfocal and parcentered.

    MAKE Magazine

  • ; today the media's parfocal lens is focused on a silly-money transfer to Manchester City.

    The Guardian World News

  • 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

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