Imaging lens and imaging apparatus
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United States of America Patent
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May 21, 2019
Grant Date -
Jan 25, 2018
app pub date -
Jun 12, 2017
filing date -
Jul 20, 2016
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The imaging lens consists of, in order from an object side, a positive first lens L1, a negative second lens L2, a positive third lens L3, and a positive fourth lens L4. Conditional expressions relating to a focal length f of an entire system, a combined focal length f234 of the second lens L2 to the fourth lens L4, an Abbe number νd1 of the first lens L1, an Abbe number νd2 of the second lens L2, a radius of curvature R1 of a surface of the first lens L1 on the object side, and a radius of curvature R2 of a surface of the first lens L1 on an image side: 0.4
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