An image pickup lens includes, in order from an object side, a first lens element having a positive refractive power and a convex surface facing the object side, an aperture stop adjusting the amount of light, a second lens element having a negative refractive power, a third lens element having a positive refractive power and a concave surface facing the object side, and a fourth lens element having a negative refractive power. In the image pickup lens, the following conditional expressions are satisfied, 0.6