Imaging optical lens

摘要

PROBLEM TO BE SOLVED: To provide an imaging optical lens. SOLUTION: A first lens, a second lens, a third lens, a fourth lens and a fifth lens are provided in order from the object side to the image side, and the focal distance of the imaging optical lens is set to f, the first lens, and the like. The focal distances of the second lens, the third lens, and the fifth lens are f1, f2, f3, and f5, respectively, and the radius of curvature of the object side surface and the image side surface of the second lens are R3, R4, and the fourth lens, respectively. When the radius of curvature of the surface on the object side and the surface on the image side are R7 and R8, respectively, and the radius of curvature of the surface on the object side and the surface on the image side of the fifth lens are R9 and R10, respectively, −0.50 ≦ f1 / F2 ≦ −0.35, 5.00 ≦ f3 / f ≦ 14.00, -3.10 ≦ (f2 + f5) / f ≦ -2.40, 3.00 ≦ (R3 + R4) / (R3-R4) ≦ The relational expression of 4.00, 1.20 ≦ (R7 + R8) / (R7-R8) ≦ 1.30, 0.25 ≦ (R9 + R10) / (R9-R10) ≦ 0.65 is satisfied. [Selection diagram] Fig. 1