Optical lens and electronic apparatus

An optical lens being a zoom lens which zooms between a telescopic end and a wide-angle end, the optical lens, in order from an object side to an image-forming side comprising:

• a first lens having positive refractive power and an Abbe number of V1;
• a second lens having negative refractive power;
• a third lens having positive refractive power;
• a fourth lens having positive refractive power;
• a fifth lens having negative refractive power;
• a sixth lens having negative refractive power;
• a seventh lens having negative refractive power;
• and
• an eighth lens, which is a lens closest to the image-forming side, having refractive power and an Abbe number of V8, and V8>V1, wherein Y is an image height of the optical lens, Ft is a focal length at the telescopic end, Fw is a focal length at the wide-angle end, TTL is a distance between an object-side surface of the first lens and an imaging plane, and the optical lens satisfies at least one of the following conditions:
• 8<Fw/Y<20, 0.85≤TTL/Ft≤1.80 mm≤Ft≤110 mm, 35 mm≤Fw≤60 mm and 1.7≤Ft/Fw≤2.3,
• wherein the optical lens comprises no fewer than and no more than eight lenses.