Attachment optical system and image pickup system including the same
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United States of America Patent
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Aug 22, 2017
Issued Date -
N/A
app pub date -
May 9, 2016
filing date -
May 14, 2015
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Abstract
An attachment optical system detachably mounted between a lens system and an image pickup apparatus, includes: a receiver receiving first information for correcting lateral chromatic aberrations caused by the lens system; a computer deriving, based on the first information and optical characteristics of the attachment optical system, second information for correcting lateral chromatic aberrations; and a transmitter transmitting the second information to the image pickup apparatus, in which the first and second information include information for obtaining lateral chromatic aberration amounts under conditions of zoom, focus and f-number, based on ratio of image height to maximum image height, in which the first and second information indicate shift amounts of blue/red relative to green radially about optical axis, and in which the shift amounts of blue/red in the first information and in the second information are properly set as functions of ratio of image height to maximum image height.
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