Zoom lens and image pickup apparatus equipped with zoom lens

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9128273
APP PUB NO 20130038765A1
SERIAL NO

13567720

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A zoom lens includes a first lens unit of a positive refractive power, a second lens unit of a negative refractive power, a third lens unit of a positive refractive power, and a rear lens group including one or more lens units in order from an object side to an image side, the first, second, and third lens units being moved towards an object side during zooming from a wide-angle end to a telephoto end with respect to an image plane, wherein the first lens unit includes a positive lens and a negative lens, and movement amounts of the first, second, and third lens units during zooming from a wide-angle end to a telephoto end and a focal length of the entire zoom lens at the wide-angle end are appropriately set.

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujisaki, Toyokatsu Utsunomiya, JP 23 143

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