Imaging lens, camera module and electronic device

An imaging lens, a camera module and an electronic device are provided, and the imaging lens has an optical axis and includes a lens barrel, a plurality of optical lenses, an annular fixing element and a nano microstructure. At least one of the optical lenses is disposed inside the lens barrel. The annular fixing element is in physical contact with at least one of the optical lenses and comprises an object side surface, an image side surface, an outer diameter surface and a light through hole. The object side surface and the image side surface respectively face the object side and the image side of the imaging lens. The outer diameter surface connects the object-side surface and the image-side surface. The optical axis passes through the center of the light through hole. The nanometer microstructure is provided with a plurality of irregular ridge-shaped protrusions. When the imaging lens is observed along the direction parallel to the optical axis, the lens cone, the nanometer microstructure and the optical l