Imaging lens and imaging device
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United States of America Patent
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Feb 25, 2014
Grant Date -
Dec 20, 2012
app pub date -
Feb 17, 2011
filing date -
Feb 26, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is an imaging lens by which astigmatism and field curvature are satisfactorily corrected by arranging on a first surface a concave surface having an appropriate radius of curvature. Condition (1) defines the radius of curvature of the concave surface arranged on the object-side surface of a bonded compound lens. By fulfilling condition (1), a lens can be obtained in which astigmatism and field curvature are satisfactorily corrected. Condition (1): −1.5
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