Optical imaging lens
AssigneeGenius Electronic Optical (Xiamen) Co., Ltd.
InventorsHung-Chien Hsieh, Jiali Lian, Jing Ning
Life of this patent
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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 a sixth lens element, a seventh lens element and a eighth lens element positioned sequentially from an object side to an image side. Through arrangement of convex or concave surfaces of the eight 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 a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element sequentially from an object side to an image side along an optical axis, each of the first, second, third, fourth, fifth, sixth, seventh and eighth lens elements having an object-side surface facing toward the object side and allowing imaging rays to pass through and an image-side surface facing toward the image side and allowing the imaging rays to pass through, wherein:
- the object-side surface of the first lens element comprises a convex portion in a vicinity of the optical axis;
- the image-side surface of the second lens element comprises a concave 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 concave portion in a vicinity of a periphery of the fourth lens element;
- the fifth lens element is a plastic lens element;
- the image-side surface of the sixth lens element comprises a convex portion in a vicinity of the optical axis;
- the object-side surface of the seventh lens element comprises a convex portion in a vicinity of the optical axis;
- the eighth lens element is a plastic lens element;
- an Abbe number of the first lens element is represented by V1, an Abbe number of the second lens element is represented by V2, an Abbe number of the third lens element is represented by V3, an Abbe number of the fourth lens element is represented by V4, an Abbe number of the fifth lens element is represented by V5, an Abbe number of the sixth lens element is represented by V6, an Abbe number of the seventh lens element is represented by V7, an Abbe number of the eighth lens element is represented by V8, and the optical imaging lens has refracting powers only for the first, second, third, fourth, fifth, sixth, seventh and eighth lens elements and satisfies an inequality:
- (V5+V6+V7+V8)−(V1+V2+V3+V4)≥35.000
Dependencies are inferred from the claim text.