An imaging lens system includes a first lens having refractive power, a second lens having refractive power, a third lens having refractive power, a fourth lens having refractive power, a fifth lens having refractive power, a sixth lens having refractive power and having a convex object-side surface, a seventh lens having refractive power, and an eighth lens having refractive power, wherein a field of view (FOV) of the imaging lens system is 78-85 degrees.