Imaging lens and imaging apparatus equipped with the imaging lens

An imaging lens consisting of four lenses, including, in order from the object side to the image side:

• a first lens having a positive refractive power;
• a second lens having a negative refractive power;
• a third lens having a positive refractive power;
• and
• a fourth lens having a negative refractive power;
• an aperture stop being positioned at the object side of the surface toward the object side of the first lens;
• and
• the conditional formulae below being satisfied:
• 0.8<TL/f<1.0 (1)
• 1.0<f/fl<3.0 (2)
• 2.03 mm<f<5.16 mm (3)
• 1.0 mm<fl<3.0 mm (4)
• wherein f is the focal length of the entire lens system, fl is the focal length of the first lens, and TL is the distance along the optical axis from the surface of the first lens toward the object side to the paraxial focal point position at the image side in the case that the portion corresponding to back focus is an air converted length.

An imaging lens consisting of six lenses, including, in order from the object side to the image side:

• a first lens having a positive refractive power;
• a second lens having a negative refractive power;
• and
• four lenses;
• an aperture stop being positioned at the object side of the surface toward the object side of the first lens;
• and
• the conditional formulae below being satisfied:
• 0.8<TL/f<1.0 (1)
• 1.0<f/fl<3.0 (2)
• 2.03 mm<f<5.16 mm (3)
• 1.0 mm<fl<3.0 mm (4)
• 0.004<Da/f<0.040 (5-1)
• wherein f is the focal length of the entire lens system, fl is the focal length of the first lens, TL is the distance along the optical axis from the surface of the first lens toward the object side to the paraxial focal point position at the image side in the case that the portion corresponding to back focus is an air converted length, and Da is the distance along the optical axis between the first lens and the second lens.