PHOTOGRAPHIC LENS

PROBLEM TO BE SOLVED: To provide a thin photographic lens used for a mobile camera or the like. SOLUTION: The photographic lens includes, in order from the object side to the image side: a diaphragm 1 having a predetermined aperture diameter; a first lens 2 formed from one meniscus lens whose convex face is on the object side, and having positive refractive power; a second lens 3 made of a resin material so as to have a concave face on the object side and have aspherical faces as the image side face and the object side face, and having positive refractive power; and a third lens 4 made of a resin material so as to have a convex face on the image side and have aspherical faces as the image side face and the object side face, and having negative refractive power. Such a three-group, three-lens configuration makes it possible to obtain a thin photographic lens that ensures an appropriate back focus, adequate corrections of various aberrations, the shorter full length of the lens, and copes with high density imaging element that has ≥100 pixels. COPYRIGHT: (C)2007,JPO&INPIT