| 摘要 |
The present invention provides a compact and high-performance image pickup lens having a bright F-number and capable of suppressing shading by using the fact that a projection surface is curved. An image pickup lens (10) comprises a first lens (L1) having positive refractive power, a second lens (L2) having negative refractive power, a third lens (L3) having positive or negative refractive power, a fourth lens (L4) having positive or negative refractive power, and a fifth lens (L5) having negative refractive power. As to the fifth lens (L5) among these lenses, at least one surface is aspheric. The abovementioned image pickup lens (10) satisfies a conditional expression (1): -2.50<f5/f<-0.10 ···(1) where f5 is the focal length of the fifth lens (L5), and f is the focal length of the entire system of the image pickup lens (10). |
