Patent ID: 9581786
Date: 2017-02-28
CPC Classifications: G02B

Claim:
1. An imaging lens assembly, comprising: first, second, third and fourth optical lens elements that are arranged sequentially from an object side to an image side along an optical axis of said imaging lens assembly, said first optical lens element having a positive refractive power near the optical axis, said first optical lens element having an object-side surface that faces the object side, an image-side surface that faces the image side, and a peripheral surface that interconnects said object-side surface and said image-side surface of said first optical lens element, said image-side surface of said first optical lens element having at least one inflection point between the optical axis and said peripheral surface, said second optical lens element having a refractive power and having an object-side surface that faces the object side and an image-side surface that faces the image side, said third optical lens element having a refractive power and having an object-side surface that faces the object side and an image-side surface that faces the image side, said fourth optical lens element having a refractive power, an object-side surface that faces the object side of an image-side surface that faces the image side, and a peripheral surface that interconnect said object-side surface and said image-side surface of said fourth optical lens element, said object-side surface of said fourth optical lens element having at least one inflection point between the optical axis and said peripheral surface of said fourth optical lens element, the refractive power of at least one of said second, third and fourth optical lens elements being positive near the optical axis, at least one of said object-side surface and said image-side surface of at least one of said second, third and fourth optical lens elements being aspheric; wherein said imaging lens assembly satisfied the following optical conditions: in which, f represents a focal length of said imaging lens assembly, f1 represents a focal length of said first optical lens element, and HFOV stands for half field-of-view of said imaging lens assembly.