Imaging lens

An imaging lens comprising in order from an object side to an image side,

• a first lens,
• a second lens having negative refractive power near the optical axis,
• a third lens having a convex surface facing the image side near the optical axis,
• a fourth lens, and
• a fifth lens, wherein said first lens has negative refractive power near the optical axis, an object-side surface of said second lens has a convex surface facing the object side near the optical axis, an object-side surface of said fifth lens has a concave surface facing the object side near the optical axis, and below conditional expressions (3) and (4) are satisfied:
• 1.60<T1/f<3.70 (3)
• 0.10<T2/T3<0.80 (4)
• where
• T1:
• a distance along the optical axis from the image-side surface of the first lens to the object-side surface of the second lens,
• f:
• a focal length of the overall optical system of the imaging lens,
• T2:
• a distance along the optical axis from the image-side surface of the second lens to the object-side surface of the third lens,
• T3:
• a distance along the optical axis from the image-side surface of the third lens to the object-side surface of the fourth lens.

An imaging lens comprising in order from an object side to an image side,

• a first lens,
• a second lens having negative refractive power near the optical axis,
• a third lens having a convex surface facing the image side near the optical axis,
• a fourth lens, and
• a fifth lens, wherein an object-side surface of said second lens has a convex surface facing the object side near the optical axis, an image-side surface of said fifth lens has a convex surface facing the image side near the optical axis, and below conditional expressions (1) and (5) are satisfied:
• 3.00<(T4/f)×100<5.90 (1)
• −19.5<(D5/f5)×100<−9.00 (5)
• where
• T4:
• a distance along the optical axis from the image-side surface of the fourth lens to the object-side surface of the fifth lens,
• f:
• a focal length of the overall optical system of the imaging lens,
• D5:
• a thickness along the optical axis of the fifth lens,
• f5:
• a focal length of the fifth lens.