Optical imaging lens
AssigneeGenius Electronic Optical (Xiamen) Co., Ltd.
InventorsMatthew BONE, Jiasin JHANG, Huifeng PAN, Ruyou TANG
Life of this patent
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Abstract
Present embodiments provide for an optical imaging lens. The optical imaging lens includes at least a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element positioned in an order from an object side to an image side. Through forming a vignetting aperture and designing parameters satisfying at least two inequalities, the improved optical imaging lens may provide better optical characteristics, a decreased effective focal length and an enlarged angle of view while the total length of the optical imaging lens may be shortened.
Claims20
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 and an image-side surface facing toward the image side, wherein:
- the image-side surface of the first lens element comprises a concave portion in a vicinity of a periphery of the first lens element;
- the object-side surface of the third lens element comprises a convex portion in a vicinity of the optical axis;
- the image-side surface of the third lens element comprises a convex portion in a vicinity of a periphery of the third lens element;
- the object-side surface of the fourth lens element comprises a convex portion in a vicinity of the optical axis;
- the optical imaging lens comprises no other lens elements beyond the first, second, third, fourth, fifth and sixth lens elements;
- an effective focal length of the optical imaging lens is represented by EFL, a central thickness of the sixth lens element along the optical axis is represented by T6, a distance from the image-side surface of the sixth lens element to an image plane along the optical axis is represented by BFL, and EFL, T6, and BFL satisfy the inequalities:
- EFL/T6≤10.4 and EFL/BFL≤3.9.
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 and an image-side surface facing toward the image side, wherein:
- the object-side surface of the first lens element comprises a convex portion in a vicinity of a periphery of the first lens element;
- the object-side surface of the fourth lens element comprises a convex portion in a vicinity of the optical axis;
- the object-side surface of the fifth lens element comprises a convex portion in a vicinity of the optical axis;
- the optical imaging lens comprises no other lens elements beyond the first, second, third, fourth, fifth and sixth lens elements;
- an effective focal length of the optical imaging lens is represented by EFL, a central thickness of the sixth lens element along the optical axis is represented by T6, a distance from the image-side surface of the sixth lens element to an image plane along the optical axis is represented by BFL, and EFL, T6, and BFL satisfy the inequalities:
- EFL/T6≤10.4 and EFL/BFL≤3.9.
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 and an image-side surface facing toward the image side, wherein:
- the image-side surface of the first lens element comprises a concave portion in a vicinity of a periphery of the first lens element;
- the object-side surface of the fourth lens element comprises a convex portion in a vicinity of the optical axis;
- the optical imaging lens comprises no other lens elements beyond the first, second, third, fourth, fifth and sixth lens elements;
- an effective focal length of the optical imaging lens is represented by EFL, a central thickness of the sixth lens element along the optical axis is represented by T6, a distance from the image-side surface of the sixth lens element to an image plane along the optical axis is represented by BFL, an air gap between the fourth lens element and the fifth lens element along the optical axis is represented by G4, an air gap between the fifth lens element and the sixth lens element along the optical axis is represented by G5, and EFL, T6, BFL, G4 and G5 satisfy the inequalities:
- EFL/T6≤10.4, EFL/BFL≤3.9 and G4/G5≤2.2.
Dependencies are inferred from the claim text.