Abstract: An optical imaging lens includes a lens barrel, a front lens element, plural intermediate lens elements, and a rear lens element. The front lens element has a first central lens portion and a first assembly portion. The first assembly portion has a first front abutting section, a first front slanting surface section, and a first rear slanting surface section. Each of the intermediate lens elements has a second central lens portion and a second assembly portion. The second assembly portion has a second front slanting surface section and a second rear slanting surface section. The rear lens element has a third central lens portion and a third assembly portion. The third assembly portion has a third front slanting surface section.

Abstract: An imaging lens includes first, second, third, fourth and fifth lens elements arranged from an object side to an image side in the given order. The first lens element has a positive refractive power. The second lens element has a negative refractive power, and has an object-side surface with a concave portion, and an image-side surface with a concave portion. The third lens element has an object-side surface with a concave portion. The fourth lens element has an image-side surface with a convex portion. The fifth lens element has an object-side surface with a concave portion.

Abstract: Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises four lens elements positioned sequentially from an object side to an image side. Though controlling the convex or concave shape of the surfaces, the refraction power and/or the ratio among the parameters of the lens element(s), the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.