Imaging lens, associated camera, and imaging system

An imaging lens, the imaging lens having a lens axis and comprising:

• a monolithic body made of an optical material, the monolithic body having:
• an entrance optical surface configured for receiving light incident thereon, the entrance optical surface being spherically curved with a convex curvature and an entrance center of curvature located on the lens axis;
• an exit optical surface configured for direct coupling to a spherically-curved image sensor array, the exit optical surface being spherically curved with a convex curvature and an exit center of curvature located on the lens axis;
• and
• a lateral surface extending from a periphery of the entrance optical surface to a periphery of the exit optical surface, the lateral surface being shaped such that the monolithic body has a minimum sectional diameter, the minimum sectional diameter and the entrance center of curvature being located in a same plane, the minimum sectional diameter defining an aperture stop centered on the lens axis and conjugate to an entrance pupil of the imaging lens;
• wherein the imaging lens has a focal surface that is spherically curved with a focal curvature corresponding to the convex curvature of the exit optical surface, the focal surface being coincident with the exit optical surface.