Imaging lens

An imaging lens, comprising a first lens L1, an aperture stop S, a second lens L2, and a third lens L3, wherein

• said first lens L1, said aperture stop S, said second lens L2 and said third lens L3 are arranged in this sequence from an object side to an image side,
• said first lens L1 is a meniscus lens having a positive refractive power, of which convex surface faces the object side,
• said second lens L2 is a meniscus lens having a positive or negative refractive power, of which convex surface faces the image side,
• said third lens L3 is a meniscus lens having a negative refractive power, of which convex surface faces the object side,
• both surfaces of said first lens L1 are aspherical, both surfaces of said second lens L2 are aspherical, and both surfaces of said third lens L3 are aspherical, and
• the following conditions are satisfied:
• 0.90<D/f<1.20 (1)
• 0.20<r1/f<0.35 (2)
• 0.80<f1/f<1.00 (3)
• −9.00<f3/f<−3.20 (4)
• 50.0<ν<60.0 (5)
• where,
• f:
• composite focal length (focal length of imaging lens) generated by the three lenses of said first lens L1, said second lens L2 and said third lens L3;
• D:
• distance from the object side face of said first lens L1 to the image face (in the atmosphere);
• r1:
• radius of curvature of the object side face of said first lens L1 in the vicinity of the optical axis (radius of curvature at the optical axis);
• f1:
• focal length of said first lens L1;
• f3:
• focal length of said third lens L3;
• ν:
• Abbe number of said second lens L2.