bipotential electrostatic lens
bipotential electrostatic lens[¦bī·pə′ten·chəl i‚lek·trə′stad·ik ′lenz]
An electron lens in which image and object space are field-free, but at different potentials; examples are the lenses formed between apertures of cylinders at different potentials. Also known as immersion electrostatic lens.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.