Multifocal objective
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United States of America Patent
Stats
-
May 3, 1988
Grant Date -
N/A
app pub date -
Nov 29, 1984
filing date -
Mar 29, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to an image-forming objective which is capable of forming sharp images of objects at at least two different distances from the objective, there being arranged at one focal plane of the objective a corrective element divided into at least two fields in which the refractive power differs between them.
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Cited Art Landscape
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