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electrostatic lens

American  

noun

  1. an electron lens that focuses an electron beam by passing it through a series of electrodes kept at different voltages.


electrostatic lens British  

noun

  1. an electron lens consisting of a system of metal electrodes, the electrostatic field of which focuses the charged particles

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of electrostatic lens

First recorded in 1950–55