Zoom lens and imaging apparatus
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United States of America Patent
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Jan 23, 2018
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N/A
app pub date -
Sep 12, 2016
filing date -
Sep 18, 2015
priority date (Note) -
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Abstract
A zoom lens is constituted by, in order from the object side to the image side: a positive first lens group which his fixed when changing magnification; at least two moving lens groups that move when changing magnification; and a positive final lens group which is fixed when changing magnification. The first lens group is constituted by, in order from the object side to the image side: a negative 1a lens group which is fixed during focusing operations, a positive 1b lens group which moves during focusing operations, and a positive 1c lens group which is fixed during focusing operations. The 1a lens group includes at least one negative lens that satisfies predetermined conditional formulae.
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