Optical imaging lens

An optical imaging lens comprising a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element sequentially from an object side to an image side along an optical axis, each of the first, second, third, fourth, fifth, sixth and seventh lens elements having an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through, the optical imaging lens comprising no other lens elements having refracting power beyond the first, second, third, fourth, fifth, sixth and seventh lens elements wherein:

• the first lens element has negative refracting power;
• an optical axis region of the image-side surface of the second lens element is convex;
• an optical axis region of the object-side surface of the third lens element is concave;
• a periphery region of the object-side surface of the fourth lens element is concave;
• a periphery region of the image-side surface of the sixth lens element is convex;
• an optical axis region of the image-side surface of the seventh lens element is concave;
• a sum of six air gaps from the first lens element to the seventh lens element along the optical axis is represented by AAG;
• a maximum of six air gaps from the first lens element to the seventh lens element along the optical axis is represented by Gmax;
• a minimum of seven thicknesses from the first lens element to the seventh lens element along the optical axis is represented by Tmin;
• and
• the optical imaging lens satisfies an inequality:
• AAG/(Gmax+Tmin)≤1.700.