Imaging lens and imaging apparatus equipped with the imaging lens

An imaging lens, substantially consisting of five lenses, composed of:

• a first lens having a positive refractive power and a convex surface on the object side;
• a second lens having a negative refractive power and a concave surface on the object side;
• a third lens having a negative refractive power and a meniscus shape with a convex surface on the object side;
• a fourth lens having a positive refractive power and a meniscus shape with a concave surface on the object side;
• and
• a fifth lens having a negative refractive power and a concave surface on the image side, the image side surface having an aspherical shape with at least one inflection point located inward in a radial direction from the intersection between the image side surface and a principal ray of the maximum angle of view toward the optical axis, disposed in order from the object side,
• wherein the imaging lens satisfies conditional expressions given below:
• 0.91<f/f1<2.47 (1)
• −2.13<f/f5<−1.03 (2)
• 1.2<TTL/(f·tan ω)<1.57 (3)
• where
• f:
• focal length of the entire system,
• f1:
• focal length of the first lens,
• f5:
• focal length of the fifth lens,
• TTL:
• distance on the optical axis from the object side surface of the first lens to the image plane when the back focus is expressed in air equivalent distance, and
• ω:
• maximum half angle of view when an object at infinity is in focus.