Patent ID: 8717688
Filing Date: 2014-05-06
Classification: G02B

Abstract:
1. An image capturing lens system comprising, in order from an object side to an image side: a first lens element with positive refractive power having a convex object-side surface at a paraxial region; a second lens element with negative refractive power having a concave object-side surface at a paraxial region; a third lens element with positive refractive power having a convex object-side surface at a paraxial region; a fourth lens element with negative refractive power having a concave object-side surface at a paraxial region and a convex image-side surface at a paraxial region; and a fifth lens element with refractive power having a concave image-side surface at a paraxial region, the shape of the image-side surface changing from concave at the paraxial region thereof to convex while away from the paraxial region thereof, both of the object-side and image-side surfaces being aspheric; wherein a curvature radius of the object-side surface of the second lens element is R3, a curvature radius of the image-side surface of the second lens element is R4, a curvature radius of the object-side surface of the third lens element is R5, a curvature radius of the image-side surface of the third lens element is R6, and they satisfy the following relations: