Optical image lens system

An optical image 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;
• a second lens element with positive refractive power;
• a third lens element with positive refractive power;
• a fourth lens element;
• a fifth lens element with positive refractive power having a convex image-side surface, wherein at least one of an object-side surface and the image-side surface of the fifth lens element is aspheric;
• and
• a sixth lens element with negative refractive power having a concave image-side surface, wherein at least one of an object-side surface and the image-side surface of the sixth lens element is aspheric, and the sixth lens element has at least one inflection point on the image-side surface thereof;
• wherein the optical image lens system has a total of six lens elements, each of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element is a single lens, there is an air space between any two lens elements of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth len element and the sixth Lens element that are adjacent to each other a focal length of the optical image lens system is f, a focal length of the second lens element is f2, a focal lenth of the third lens element is f3, a focal length of the fourth lens element is f4, and the following relationship are satisfied:
• 0<f/f2<0.8;
• and
• 1.4<f/f3+|f/f4|<2.6.