Image pickup lens, image pickup device, and mobile terminal device

An image pickup lens, comprising sequentially from an object side:

• an aperture stop,
• a first lens, and
• a second lens,
• wherein the first lens is a positive meniscus lens which has a convex surface at the object side and a concave surface at an image side opposite to the object side, the second lens has a concave surface at the object side and an image side surface whose radius of curvature on an paraxial region is infinite or a negative value, and the image side surface of the second lens includes an aspheric surface on which a positive power is made strong toward a lens peripheral region, and
• wherein the image pickup lens is made to satisfy the following conditional formulas:
• 1.55<n1<1.80 (1)
• 1.063/2.962≦D3/f<0.6 (2)
• 40.0<v2<90.0 (3)
• −0.15<f/r4<0.0 (4)
• where n1 represents a refractive index of the first lens for d spectral line, D3 represents a thickness (mm) of the second lens on an optical axis, f represents a focal distance (mm) of an entire system of the image pickup lens, v2 represents of an Abbe's number of the second lens, and r4 represents a radius of curvature (mm) of an image side surface of the second lens.