Imaging optical lens

摘要

PROBLEM TO BE SOLVED: To disclose an imaging optical lens in the field of an optical lens. An imaging optical lens is composed of a first lens having a positive refractive power, a second lens having a negative refractive power, and a third lens having a positive refractive power in this order from the object side to the image side. And the conditional expression 0.80 ≦ f1 / f ≦ 1.10, 0.30 ≦ d3 / d5 ≦ 1.00, -20.00 ≦ (R5 + R6) / (R5-R6) ≦ -10.00, 5.00 ≦ R2 / f ≦ 50.00, -10.00 ≦ (R3 + R4) / (R3-R4) ≦ -4.00 are satisfied. The imaging optical lens according to the present invention has good optical performance and meets the design requirements for wide-angle and ultra-thinning. [Selection diagram] Fig. 1