Imaging lens

Abstract

A low-cost, compact and low-profile imaging lens with relatively high brightness, which provides a wide angle of view of about 90 degrees and corrects various aberrations properly. It is designed for use in a solid-state image sensor and includes the following elements arranged in order from an object side to an image side: a first lens as a positive or negative double-sided aspheric lens having a convex object-side surface near an optical axis; an aperture stop; a positive second lens having a convex image-side surface; a negative third lens having a concave image-side surface; a positive fourth lens having a convex image-side surface; and a fifth lens as a negative meniscus lens having a concave image-side surface near the optical axis. It satisfies a conditional expression (1) below: 0.9<ih/f<1.1  (1) where f: focal length of the overall optical system of the imaging lens ih: maximum image height

Dependencies are inferred from the claim text.