Optical imaging lens
AssigneeGenius Electronic Optical (Xiamen) Co., Ltd.
InventorsCHUANBO DONG, SONGCHAO HUANG, CHING-HAN YANG, HUNG-CHIEN HSIEH
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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 and a sixth lens element positioned in an order from an object side to an image side. Through designing concave and/or convex surfaces of the lens elements and an inequality, the optical imaging lens may increase field of view, shrink volume and provide well image 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 and a sixth lens element sequentially from an object side to an image side along an optical axis, each of the first, second, third, fourth, fifth and sixth 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 first lens element has negative refracting power;
- an optical axis region of the image-side surface of the second lens element is convex;
- the fourth lens element has negative refracting power, and a periphery region of the object-side surface of the fourth lens element is concave;
- the sixth lens element has negative refracting power, and an optical axis region of the object-side surface of the sixth lens element is concave;
- lens elements of the optical imaging lens are only the six lens elements described above;
- and
- a distance from the image-side surface of the sixth lens element to an image plane along the optical axis is represented by BFL, a distance from the image-side surface of the second lens element to the object-side surface of the third lens element along the optical axis is represented by G23, a distance from the image-side surface of the third lens element to the object-side surface of the fourth lens element along the optical axis is represented by G34, a distance from the image-side surface of the fourth lens element to the object-side surface of the fifth lens element along the optical axis is represented by G45, a distance from the image-side surface of the fifth lens element to the object-side surface of the sixth lens element along the optical axis is represented by G56, and the optical imaging lens satisfies the inequality:
- BFL/(G23+G34+G45+G56)≥3.600.
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 and a sixth lens element sequentially from an object side to an image side along an optical axis, each of the first, second, third, fourth, fifth and sixth 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:
- an optical axis region of the image-side surface of the second lens element is convex;
- the third lens element has positive refracting power;
- the fourth 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 object-side surface of the sixth lens element is concave, and a periphery region of the image-side surface of the sixth lens element is concave;
- lens elements of the optical imaging lens are only the six lens elements described above;
- and
- a distance from the image-side surface of the sixth lens element to an image plane along the optical axis is represented by BFL, a distance from the image-side surface of the second lens element to the object-side surface of the third lens element along the optical axis is represented by G23, a distance from the image-side surface of the third lens element to the object-side surface of the fourth lens element along the optical axis is represented by G34, a distance from the image-side surface of the fourth lens element to the object-side surface of the fifth lens element along the optical axis is represented by G45, a distance from the image-side surface of the fifth lens element to the object-side surface of the sixth lens element along the optical axis is represented by G56, and the optical imaging lens satisfies the inequality:
- BFL/(G23+G34+G45+G56)≥3.300.
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 and a sixth lens element sequentially from an object side to an image side along an optical axis, each of the first, second, third, fourth, fifth and sixth 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 fourth lens element has negative refracting power;
- a periphery region of the image-side surface of the fifth lens element is convex;
- the sixth lens element has negative refracting power;
- an optical axis region of the image-side surface of the sixth lens element is convex, and a periphery region of the image-side surface of the sixth lens element is concave;
- lens elements of the optical imaging lens are only the six lens elements described above;
- and
- a distance from the image-side surface of the first lens element to the object-side surface of the second lens element along the optical axis is represented by G12, a distance from the image-side surface of the sixth lens element to the image plane along the optical axis is represented by BFL, a distance from the image-side surface of the second lens element to the object-side surface of the third lens element along the optical axis is represented by G23, a distance from the image-side surface of the third lens element to the object-side surface of the fourth lens element along the optical axis is represented by G34, a distance from the image-side surface of the fourth lens element to the object-side surface of the fifth lens element along the optical axis is represented by G45, a distance from the image-side surface of the fifth lens element to the object-side surface of the sixth lens element along the optical axis is represented by G56, and the optical imaging lens satisfies the inequality:
- (G12+BFL)/(G23+G34+G45+G56)≥3.000.
Dependencies are inferred from the claim text.