| 摘要 |
An image pickup lens, an image pickup apparatus, and a mobile terminal are provided to configure the image pickup lens with a positive lens group made of first, second, third lenses and a biconcave-shaped fourth lens having a negative refractive power in a teleport type, thereby shortening the total length of the image pickup lens. An image pickup lens(10) forms a subject image on the photoelectric converting unit(51a) of a solid-state imaging device(51). The image pickup lens includes an iris(S), a first lens(L1), a second lens(L2), a third lens(L3), and a fourth lens(L4). The first lens has a positive refractive power. The second lens has a negative refractive power. The third lens has a positive refractive power. The fourth lens has a biconcave shape and a negative refractive power including at least one aspheric surface. The lenses satisfy following conditions of 0.30<f1/f<0.85 and 0.30<f3/f<1.00. f1 is a focusing distance of the first lens. f3 is a focusing distance of the third lens. f is a focusing distance of the image pickup lens system.
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