Patent ID: 8830298

Claim:
A wide-angle lens comprising: an imaging lens system, including: a front lens group arranged on an object side, a rear lens group arranged on an image side, and an aperture arranged therebetween, and the front lens group and the rear lens group are constructed of five lens elements in total, wherein the front lens group in which two lens elements, which are first and second lens elements, having negative power respectively, and one lens element, which is a third lens element having positive power, are arranged in order from the object side to an aperture side, and the rear lens group in which two lens elements, which are fourth and fifth lens elements, having positive power respectively, are arranged in order from the aperture side to the image side, and where an incident angle to an optical axis of the imaging lens system of a chief ray of a maximum angle of view passing through the aperture is θI, the following Expression 1 is satisfied, wherein 40° (degrees)<θ I< 60° (degrees) Expression 1.