To obtain a compact photographing lens whose front lens diameter is small and which has high optical performance over an entire image plane.

A positive meniscus 1st lens L1 whose convex surface is faced to an object, a negative 2nd lens L2 which has a refractive surface stronger on the image surface side than on the object side and whose both lens surfaces are concave, a positive 3rd lens L3, whose image surface side and the object side have the same refractive power and whose both lens surfaces are convex and a negative meniscus 4th lens L4 having a refractive surface stronger on the object side than on the image surface side and whose convex surface is faced to the image surface side, are arrayed in order from the object side. An AS is a movable diaphragm and is arranged between the 2nd lens L2 and the 3rd lens L3. An FS1 and an FS2 are fixed diaphragms for restricting off-axis luminous flux width and the fixed diaphragm FS1 is arranged on the 1st surface of the 1st lens L1 on the object side and the fixed diaphragm FS2 is arranged on the object side surface of the 3rd lens L3.