IMAGING LENS AND IMAGING APPARATUS
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United States of America Patent
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Issued Date -
Sep 22, 2016
app pub date -
Mar 8, 2016
filing date -
Mar 8, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
An imaging lens is constituted by, in order from the object side to the image side, a first lens group having a positive refractive power; a second lens group having a negative refractive power; and a third lens group having a positive refractive power. An aperture stop is positioned at the object side of the second lens group. The first lens group has at least two positive lenses and at least one negative lens. The second lens group is constituted by one positive lens and one negative lens. The third lens group has at least two positive lenses and at least two negative lenses that include at least one cemented lens. Focusing operations are performed by only the second lens group moving.
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