Imaging lens capable of eliminating stray light

An imaging lens capable of eliminating stray light includes a lens barrel, an imaging unit arranged in the lens barrel, and a light shielding device arranged in the imaging unit. The light shielding device includes a fixing portion clamped by the imaging unit; an object-side protruding portion protruded from an inner circumferential edge of the fixing portion close to the object side and obliquely extended toward the inside until terminating at a terminal edge; and a image-side protruding portion protruded from an inner circumferential edge of the fixing portion close to the image side and obliquely extended toward the inside until terminating at a terminal edge. The fixing portion of the light shielding device enables the light shielding device to be easily positioned and conveniently assembled, so as to maintain an excellent assembling precision. The object-side and image-side protruding portions can effectively exclude stray light so as to reduce unnecessary image resulted from the stray light in an imagin