OPTICAL IMAGING LENS AND ELECTRONIC DEVICE COMPRISING THE SAME

摘要

An optical imaging lens includes: a first, second, third and fourth lens element, the first lens element has an object-side surface with a convex part in a vicinity of the optical axis, the second lens element has an image-side surface with a concave part in a vicinity of its periphery; the third lens element has an image-side surface with a convex part in a vicinity of the optical axis, the fourth lens element has an object-side surface with a concave part in a vicinity of the optical axis; the fifth lens element has an object-side surface with a convex part in a vicinity of the optical axis, wherein the optical imaging lens set does not include any lens element with refractive power other than said first, second, third, fourth and fifth lens elements.

主权项

1. An optical imaging lens set, from an object side toward an image side in order along an optical axis comprising: a first lens element, an aperture stop, a second lens element, a third lens element, a fourth lens element and a fifth lens element, said first to fifth lens elements having an object-side surface facing toward the object side as well as an image-side surface facing toward the image side, wherein:
said first lens element has an object-side surface with a convex part in a vicinity of the optical axis; said second lens element has an image-side surface with a concave part in a vicinity of its periphery; said third lens element has an image-side surface with a convex part in a vicinity of the optical axis; said fourth lens element has an object-side surface with a concave part in a vicinity of the optical axis; said fifth lens element has an object-side surface with a convex part in a vicinity of the optical axis, and has an object-side surface with a concave part in a vicinity of its periphery; the optical imaging lens set does not include any lens element with refractive power other than said first lens element, second lens element, third lens element, fourth lens element and fifth lens element, in addition, a distance TTL between the object surface of the first lens element to an image plane, a distance G34 between the third lens element and the fourth lens element along the optical axis, and a thickness T4 of said fourth lens element along said optical axis satisfies the relationships TTL/G34≦12.0, and 8.0≦TTL/T4≦12.0.