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US 8,913,330 B1Granted
Mobile device and optical imaging lens thereof
AssigneeGenius Electronic Optical Co., Ltd.
InventorsKuo-Wen Chang, Poche Lee, Sheng Wei Hsu
Life of this patent
Estimating the term…
Abstract
Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises five lens elements positioned in an order from an object side to an image side. Through controlling the convex or concave shape of the surfaces of the lens elements to allow the thickness of the second lens element and the sum of all air gaps between all five lens elements along the optical axis satisfying the relation: 0.20<T2<0.50 (mm) and 0.27<(T2/Gaa)<0.40, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.
Claims17
An optical imaging lens comprising, from an object side to an image side:
- an aperture stop;
- a first lens element;
- a second lens element;
- a third lens element;
- a fourth lens element;
- and
- a fifth lens element, each of the first, second, third, fourth and fifth lens element having an object-side surface facing toward the object side and an image-side surface facing toward the image side, wherein:
- the first lens element has a positive refracting power and the object-side surface of the first lens element has a convex portion in a vicinity of an optical axis and a convex portion near a circumference of the first lens element;
- the second lens element has a negative refracting power;
- the object-side surface of the third lens element has a concave portion near a circumference of the third lens element and the image-side surface of the third lens element has a convex portion near the circumference of the third lens element;
- the fourth lens element has a positive refracting power, the object-side surface of the fourth lens element has a concave portion in a vicinity of the optical axis and a concave portion near a circumference of the fourth lens element, and the image-side surface of the fourth lens element has a convex portion in a vicinity of the optical axis and a convex portion near the circumference of the fourth lens element;
- the fifth lens element has a negative refracting power, the image-side surface of the fifth lens element has a concave portion in a vicinity of the optical axis and a convex portion near a circumference of the fifth lens element;
- the optical imaging lens has only five lens elements having a refracting power;
- and
- the optical imaging lens satisfies the following relations:
- 2.200≦T2/AG12≦3.100;
- 0.659≦T2/T3≦1.219;
- and
- 1.551≦ALT/AAG≦2.531,
- wherein T2 is a thickness of the second lens element along the optical axis, T3 is a thickness of the third lens element along the optical axis, AG12 is a width of an air gap between the first and second lens elements along the optical axis, ALT is a sum of thicknesses of the first to fifth lens elements, and AAG is a sum of widths of air gaps between the first to fifth lens elements.
17 more elements
An optical imaging lens comprising, from an object side to an image side:
- an aperture stop;
- a first lens element;
- a second lens element;
- a third lens element;
- a fourth lens element;
- and
- a fifth lens element, each of the first, second, third, fourth and fifth lens elements having an object-side surface facing toward the object side and an image-side surface facing toward the image side, wherein:
- the first lens element has a positive refracting power, and the object-side surface of the first lens element has a convex portion in a vicinity of an optical axis and a convex portion near a circumference of the first lens element;
- the second lens element has a negative refracting power;
- the object-side surface of the third lens element has a concave portion near a circumference of the third lens element and the image-side surface of the third lens element has a convex portion near the circumference of the third lens element;
- the fourth lens element has a positive refracting power, the object-side surface of the fourth lens element has a concave portion in a vicinity of the optical axis and a concave portion near a circumference of the fourth lens element, and the image-side surface of the fourth lens element has a convex portion in a vicinity of the optical axis;
- the fifth lens element has a negative refracting power and the image-side surface of the fifth lens element has a concave portion in a vicinity of the optical axis and a convex portion near a circumference of the fifth lens element;
- the optical imaging lens has only five lens elements having a refracting power;
- and
- the optical imaging lens satisfies the following relations:
- 19.390≦ALT/AG12≦41.996;
- 0.386≦AG23/AG45≦1.189;
- and
- 0.132≦AG45/AAG≦0.398,
- wherein ALT is a sum of thicknesses of the first to fifth lens elements, AG12 is a width of an air gap between the first and second lens elements along the optical axis, AG23 is a width of an air gap between the second and third lens elements along the optical axis, AG45 is a width of an air gap between the fourth and fifth lens elements along the optical axis, and AAG is a sum of widths of air gaps between the first to fifth lens elements.
17 more elements
An optical imaging lens comprising, from an object side to an image side:
- an aperture stop;
- a first lens element;
- a second lens element;
- a third lens element;
- a fourth lens element;
- and
- a fifth lens element, each of the first, second, third, fourth and fifth lens element having an object-side surface facing toward the object side and an image-side surface facing toward the image side, wherein:
- the first lens element has a positive refracting power and the object-side surface of the first lens element has a convex portion in a vicinity of an optical axis and a convex portion near a circumference of the first lens element;
- the second lens element has a negative refracting power;
- the object-side surface of the third lens element has a concave portion near a circumference of the third lens element and the image-side surface of the third lens element has a convex portion near the circumference of the third lens element;
- the fourth lens element has a positive refracting power, the object-side surface of the fourth lens element has a concave portion in a vicinity of the optical axis and a concave portion near a circumference of the fourth lens element, and the image-side surface of the fourth lens element has a convex portion in a vicinity of the optical axis;
- the fifth lens element has a negative refracting power and the image-side surface of the fifth lens element has a concave portion in a vicinity of the optical axis and a convex portion near a circumference of the fifth lens element;
- the optical imaging lens has only five lens elements having a refracting power;
- and
- the optical imaging lens satisfies the following relations:
- 0.497≦T2/AG45≦0.728;
- 0.132≦AG45/AAG≦0.398;
- 0.659≦T2/T3≦1.219;
- and
- 2.200≦T2/AG12≦5.612,
- wherein T2 is a thickness of the second lens element along the optical axis, AG45 is a width of an air gap between the fourth and fifth lens elements along the optical axis, AAG is a sum of widths of air gaps between the first to fifth lens elements, T3 is a thickness of the third lens element along the optical axis, and AG12 is a width of an air gap between the first and second lens elements along the optical axis.
18 more elements
Dependencies are inferred from the claim text.