Patent ID: 8437091

Claim:
A wide viewing angle optical lens assembly, comprising, in order from an object side to an image side: a first lens element with negative refractive power having a convex object-side surface and a concave image-side surface; a second lens element with positive refractive power having a convex object-side surface; and a third lens element with positive refractive power having a convex image-side surface; wherein the wide viewing angle optical assembly has only three lens elements with refractive power, the first lens element, the second lens element, and the third lens element are non-cemented, near an optical axis, the second lens element has a focal length f 2 , the third lens element has a focal length f 3 , the object-side surface of the first lens element has a curvature radius R 1 , the object-side surface of the third lens element has a curvature radius R 5 , the image-side surface of the third lens element has a curvature radius R 6 , and the following relations are satisfied: 0.8 <f 2 /f 3 <1.2; 0 <R 1 /|R 5 |<1.0; and 0.4<( R 5 +R 6 )/( R 5 −R 6 )<2.0.