Imaging lens and imaging apparatus equipped with the imaging lens
AssigneeFUJIFILM Corporation
InventorsMasato KONDO, Michio CHO
Life of this patent
Estimating the term…
Abstract
An imaging lens substantially includes five lenses, constituted by: 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 convex surface that faces an object side; a fourth lens having a negative refractive power and a meniscus shape with a concave surface that faces the object side; and a fifth lens having a positive refractive power, a meniscus shape with a convex surface that faces the object side, and at least one inflection point on the surface thereof toward an image side.
Claims19
An imaging lens substantially consisting of five lenses, including:
- 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 convex surface that faces an object side;
- a fourth lens having a negative refractive power and a meniscus shape with a concave surface that faces the object side;
- and
- a fifth lens having a positive refractive power, a meniscus shape with a convex surface that faces the object side, and at least one inflection point on the surface thereof toward an image side, and satisfying the following conditional formula:
- 0<f/f3<0.5 (1)
- wherein f is the focal length of the entire system, and f3 is the focal length of the third lens.
Dependencies are inferred from the claim text.