Patent ID: 9535233
Date: 2017-01-03
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, an aperture stop, 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 an object-side surface with a convex part in a vicinity of the its periphery; said second lens element has an image-side surface with a concave part in a vicinity of the optical axis, and said second lens element has negative refractive power; said aperture stop is disposed between said second lens element and said third lens element; said third lens element has positive refractive power, and has an image-side surface with a convex part in a vicinity of the optical axis; said fourth lens element is made of plastic material and has positive refractive power, and has an object-side surface with a concave part in a vicinity of the optical axis; and the optical imaging lens set does not include any lens element with refractive power other than said first, second, third and fourth lens elements.