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US 9,001,438 B2Granted
Imaging lens and imaging device
AssigneeSony Corporation
InventorHideaki Okano
Life of this patent
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AssigneeSony Corporation
InventorHideaki Okano
Estimating the term…
The present invention is to provide an imaging lens and an imaging device that achieve optical performance high enough for high-pixel imaging elements, and have the smallest possible sizes and thicknesses. A first lens having positive refractive power, an aperture stop, a second lens having positive or negative refractive power, a third lens having negative refractive power, a fourth lens having positive refractive power, and a fifth lens having negative refractive power are provided in this order from the object side, and the following conditional expressions (1), (2), and (3) are satisfied: (1) 0.80<f1/f<1.40, (2) f1/|f3|<1.50, and (3) −0.20<f1/f2<0.90, where f represents the focal length of the entire lens system, f1 represents the focal length of the first lens, f2 represents the focal length of the second lens, and f3 represents the focal length of the third lens.
An imaging lens comprising, in order from an object side, a first lens having positive refractive power, an aperture stop, a second lens having positive or negative refractive power, a third lens having negative refractive power, a fourth lens having positive refractive power, and a fifth lens having negative refractive power, the imaging lens satisfying the following conditional expressions (1), (2), and (3):
An imaging device comprising an imaging lens, and an imaging element configured to convert an optical image formed by the imaging lens into an electrical signal,
Dependencies are inferred from the claim text.