Patent ID: 8730589

Claim:
An image lens, in the order from an object side to an image side thereof, comprising: a first lens comprising a first surface facing the object side and a second surface facing the image side; a second lens comprising a third surface facing the object side and a fourth surface facing the image side; a third lens comprising a fifth surface facing the object side and a sixth surface facing the image side; a fourth lens comprising a seventh surface facing the object side and an eighth surface facing the image side; and an image plane; wherein the image lens satisfies the following formulas: D/TTL> 1.11; (1) D/L> 1.13; (2) Z/Y> 0.076; (3) wherein D is the maximum image diameter of the image plane; TTL is a total length of the image lens; L is a distance from an outmost edge of the eighth surface to an optical axis of the image lens along a direction perpendicular to the optical axis of the image lens; Z is a distance from a central point of the sixth surface to an outmost edge of the sixth surface along the optical axis; Y is a distance from the outmost edge of the sixth surface to the optical axis along a direction perpendicular to the optical axis.