Optical imaging lens
AssigneeGenius Electronic Optical (Xiamen) Co., Ltd.
InventorsJia-Sin Jhang, Baina Chen, Ruyou Tang
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Abstract
Present embodiments provide for an optical imaging lens. The optical imaging lens includes a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element positioned sequentially from an object side to an image side. Through arrangement of convex or concave surfaces of the six lens elements, the length of the optical imaging lens may be shortened while providing better optical characteristics and imaging quality.
Claims20
An optical imaging lens comprising sequentially from an object side to an image side along an optical axis:
- a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element, each of the first, second, third, fourth, fifth and sixth 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 positive refracting power;
- the object-side surface of the second lens element or the image-side surface of the second lens element is an aspherical surface;
- the image-side surface of the third lens element comprises a concave portion in a vicinity of a periphery of the third lens element;
- the image-side surface of the fourth lens element comprises a convex portion in a vicinity of the optical axis;
- the fifth lens element has negative refracting power;
- the object-side surface of the sixth lens element comprises a concave portion in a vicinity of the optical axis;
- a focal length of the first lens element is represented by f1, a focal length of the second lens element is represented by f2, a distance between the object-side surface of the first lens element and an image plane along the optical axis is represented by TTL, an effective focal length of the optical imaging lens is represented by EFL, and the optical imaging lens satisfies inequalities:
- 1.5×|f1|>|f2|;
- f1>TTL/2;
- EFL/TTL≥1.000;
- and
- TTL≤15 mm.
An optical imaging lens, sequentially from an object side to an image side along an optical axis, comprising first, second, third, fourth, fifth and sixth lens elements, each of the first, second, third, fourth, fifth and sixth lens elements having an object-side surface facing toward the object side, an image-side surface facing toward the image side, wherein:
- the first lens element has positive refracting power;
- the object-side surface of the second lens element or the image-side surface of the second lens element is an aspherical surface;
- the image-side surface of the fourth lens element comprises a convex portion in a vicinity of the optical axis;
- the fifth lens element has negative refracting power;
- the object-side surface of the fifth lens element comprises a concave portion in a vicinity of the optical axis;
- the object-side surface of the sixth lens element comprises a concave portion in a vicinity of the optical axis;
- a focal length of the first lens element is represented by f1, a focal length of the second lens element is represented by f2, a distance between the object-side surface of the first lens element and an image plane along the optical axis is represented by TTL, an effective focal length of the optical imaging lens is represented by EFL, and the optical imaging lens satisfies inequalities:
- 1.5×|f1|>|f2|;
- f1>TTL/2;
- EFL/TTL≥1.000;
- and
- TTL≤15 mm.
An optical imaging lens, sequentially from an object side to an image side along an optical axis, comprising first, second, third, fourth, fifth and sixth lens elements, each of the first, second, third, fourth, fifth and sixth lens elements having an object-side surface facing toward the object side, an image-side surface facing toward the image side, wherein:
- the first lens element has positive refracting power;
- the object-side surface of the second lens element or the image-side surface of the second lens element is an aspherical surface;
- the image-side surface of the fourth lens element comprises a convex portion in a vicinity of the optical axis;
- the fifth lens element has negative refracting power;
- the image-side surface of the fifth lens element comprises a convex portion in a vicinity of a periphery of the fifth lens element;
- the object-side surface of the sixth lens element comprises a concave portion in a vicinity of the optical axis;
- a focal length of the first lens element is represented by f1, a focal length of the second lens element is represented by f2, a distance between the object-side surface of the first lens element and an image plane along the optical axis is represented by TTL, an effective focal length of the optical imaging lens is represented by EFL, and the optical imaging lens satisfies inequalities:
- 1.5×|f1|>|f2|;
- f1>TTL/2;
- EFL/TTL≥1.000;
- and
- TTL≤9 mm.
Dependencies are inferred from the claim text.