Optical imaging lens
AssigneeGenius Electronic Optical (Xiamen) Co., Ltd.
InventorsMAOZONG LIN, JIAYUAN ZHANG
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Abstract
An optical imaging lens may include 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 positioned in an order from an object side to an image side along an optical axis. Through designing concave and/or convex surface of the lens elements, the optical imaging lens may have improved imaging quality, reduced system length, enlarged aperture, and broad field of view while the optical imaging lens may satisfy at least one inequality.
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 element having an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through, wherein:
- a periphery region of the image-side surface of the first lens element is concave;
- an optical axis region of the object-side surface of the fifth lens element is concave;
- an optical axis region of the image-side surface of the sixth lens element is concave;
- a periphery region of the object-side surface of the seventh lens element is concave;
- lens elements of the optical imaging lens are composed of the first, second, third, fourth, fifth, sixth, seventh, and eighth lens element;
- a thickness of the fourth lens element along the optical axis is less than a thickness of the third lens element along the optical axis;
- an air gap between the third lens element and the fourth lens element along the optical axis is represented by G34, an air gap between the seventh lens element and the eighth lens element along the optical axis is represented by G78, a thickness of the sixth lens element along the optical axis is represented by T6, and the optical imaging lens satisfies:
- (G34+G78)/T6≥1.800;
- and
- an air gap between the second lens element and the third lens element along the optical axis is represented by G23, a thickness of the fifth lens element along the optical axis is represented by T5, a thickness of the seventh lens element along the optical axis is represented by T7, and the optical imaging lens satisfies:
- either an optical axis region of the image-side surface of the seventh lens element is convex or (G23+G34+T5)/T7≤1.800.
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 element having an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through, wherein:
- the second lens element has negative refracting power;
- an optical axis region of the image-side surface of the fifth lens element is convex;
- an optical axis region of the image-side surface of the sixth lens element is concave;
- an optical axis region of the image-side surface of the seventh lens element is convex;
- a periphery region of the object-side surface of the eighth lens element is concave;
- lens elements of the optical imaging lens are composed of the first, second, third, fourth, fifth, sixth, seventh, and eighth lens element;
- an air gap between the second lens element and the third lens element along the optical axis is represented by G23, an air gap between the third lens element and the fourth lens element along the optical axis is represented by G34, a thickness of the fifth lens element along the optical axis is represented by T5, a thickness of the seventh lens element along the optical axis is represented by T7, and the optical imaging lens satisfies:
- (G23+G34+T5)/T7≤1.800;
- and
- a thickness of the fourth lens element along the optical axis is less than a thickness of the third lens element along the optical axis.
Dependencies are inferred from the claim text.