rotationally symmetric lens
rotationally symmetric lens
A lens whose symmetry does not change even when rotated with respect to the lens axis. Conventionally-used lenses (objective lens, condenser lens, etc.) are "rotationally symmetric lenses." On the other hand, recently-developed lenses for analytical purposes, such as the Wien filter, the omega filter, the alfa filter and the Cs corrector, are non-rotationally symmetric lenses.
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Term(s) with "rotationally symmetric lens" in the description


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