Patent ID: 8411377

Claim:
An optical lens assembly for image photographing, in order from an object side to an image side, comprising: a first lens element with positive refractive power, having a convex object-side surface; a second lens element with positive refractive power; a third lens element with positive refractive power, having a convex image-side surface; a fourth lens element with negative refractive power, made of plastic, having a concave image-side surface, both object-side surface and image-side surface being aspheric, and at least one surface having at least one inflection point; wherein T 34 is an axial distance between the third lens element and the fourth lens element, T 23 is an axial distance between the second lens element and the third lens element, and the following condition is satisfied: 0.01 <T 34 /T 23 <0.85.