symmetrical achromat lens

symmetrical achromat lens

[sə′me·trə·kəl ′ak·rə‚mat ′lenz]
(optics)
An older type of camera lens in which two positive achromatic meniscus lenses are symmetrically arranged about the stop.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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