| 摘要 |
An optical imaging lens includes: a first, second, third, fourth and fifth lens element, the first lens element has an object-side surface with a convex part in a vicinity of the optical axis and a convex part in a vicinity of its periphery; the second lens element has an object-side surface with a convex part in a vicinity of its periphery; the third lens element has positive refractive power, having an object-side surface with a concave part in a vicinity of its periphery; the fourth lens element has positive refractive power, having an object-side surface with a concave part in a vicinity of its periphery and an image-side surface with a convex part in a vicinity of the optical axis; the fifth lens element has an image-side surface with a concave part in a vicinity of the optical axis and a convex part in a vicinity of its periphery. |
| 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:
the first lens element has positive refractive power, having a convex object-side surface with a convex part in a vicinity of the optical axis and with a convex part in a vicinity of its periphery; the second lens element has negative refractive power, having an object-side surface with a convex part in a vicinity of its periphery; the third lens element has positive refractive power, having an object-side surface with a concave part in a vicinity of its periphery; the fourth lens element has positive refractive power, having an object-side surface with a concave part in a vicinity of its periphery, and an image-side surface with a convex part in a vicinity of the optical axis; and the fifth lens element has an image-side surface with a concave part in a vicinity of the optical axis, and a convex 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, the sum of all four air gaps AAG between each lens element from said first lens element to said fifth lens element along the optical axis, and a thickness T3 of said third lens element along said optical axis satisfy a relationship AAG/T3≦3.0. |
