Patent ID: 9658430
Date: 2017-05-23
CPC Classifications: G02B,H04N

Claim:
1. An optical imaging lens set, from an object side toward an image side in order along an optical axis comprising: a first lens element, a second lens element, a third lens element and a fourth lens element, said first to fourth lens elements having an object-side surface facing toward the object side as well as an image-side surface facing toward the image side, wherein: said first lens element has negative refractive power; said second lens element has an image-side surface with a concave part in a vicinity of the optical axis; said third lens element has positive refractive power, and has an object-side surface with a convex part in a vicinity of the optical axis; said fourth lens element has an image-side surface with a concave part in a vicinity of the optical axis; and wherein the optical imaging lens set does not include any lens element with refractive power other than said first, second, third and fourth lens elements, in addition, a thickness T