Optical lens and electronic device with same

An optical lens comprises a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element which are sequentially arranged from an object side to an image side. The first lens element comprises a first surface and a second surface, the second lens element comprises a third surface and a fourth surface, the third lens element comprises a fifth surface and a sixth surface, the fourth lens element comprises a seventh surface and an eighth surface, the fifth lens element comprises a ninth surface and a tenth surface, the sixth lens element comprises an eleventh surface and a twelfth surface, the optical lens satisfies the following relational expression: | PVS1-S6 | < = 0.3 (formula 1) | PVS7-PVS8 | < = | PVS11-PVS12 | < = 1 (formula 2) | PVS1/PVS12 | < = 3 (formula 3) where PV is an error between an actual surface type and a standard surface type of the surfaces of the first, second, third, fourth, fifth and sixth lens elements, PVSn is an er