Optical imaging lens
AssigneeGenius Electronic Optical (Xiamen) Co., Ltd.
InventorsHuabin LIAO, Hai LIN, Hung-Chien HSIEH
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Abstract
The present invention provides an optical imaging lens. The optical imaging lens comprises five lens elements positioned in an order from an object side to an image side. Through controlling the convex or concave shape of the surfaces of the lens elements and satisfying inequalities, the optical imaging lens may be provided with smaller volume and great field of view.
Claims20
An optical imaging lens, comprising a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element sequentially from an object side to an image side along an optical axis, each of the first, second, third, fourth and fifth lens element 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 object-side surface of the first lens element is convex;
- an optical axis region of the image-side surface of the second lens element is concave;
- the fifth lens element has positive refracting power;
- a greatest thickness of the first, second, third, fourth and fifth lens element along the optical axis is represented by Tmax;
- a second greatest thickness of a lens element along the optical axis among the first lens element to the fifth lens element is represented by Tmax2;
- a f-number of the optical imaging lens is represented by Fno;
- an image height of the optical imaging lens is represented by ImgH;
- an abbe number of the second lens element is represented by V2;
- an abbe number of the third lens element is represented by V3;
- and
- lens elements of the optical imaging lens are only the five lens elements described above;
- the optical imaging lens satisfies the inequalities:
- Tmax+Tmax2≤1000.000 μm, Fno/ImgH≥2.000 mm−1 and V2+V3≥70.000.
An optical imaging lens, comprising a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element sequentially from an object side to an image side along an optical axis, each of the first, second, third, fourth and fifth lens element 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 object-side surface of the first lens element is convex;
- an optical axis region of the image-side surface of the second lens element is concave;
- the third lens element has positive refracting power, or an optical axis region of the image-side surface of the third lens element is convex;
- a greatest thickness of the first, second, third, fourth and fifth lens element along the optical axis is represented by Tmax;
- a second greatest thickness of a lens element along the optical axis among the first lens element to the fifth lens element is represented by Tmax2;
- a f-number of the optical imaging lens is represented by Fno;
- an image height of the optical imaging lens is represented by ImgH;
- a distance from the object-side surface of the first lens element to the image-side surface of the fifth lens element along the optical axis is represented by TL;
- an effective focal length of the optical imaging lens is represented by EFL;
- and
- lens elements of the optical imaging lens are only the five lens elements described above;
- the optical imaging lens satisfies the inequalities:
- Tmax+Tmax2≤1000.000 μm, Fno/ImgH≥2.000 mm−1 and TL/EFL≥1.200.
An optical imaging lens, comprising a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element sequentially from an object side to an image side along an optical axis, each of the first, second, third, fourth and fifth lens element 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 object-side surface of the first lens element is convex;
- an optical axis region of the image-side surface of the second lens element is concave;
- the third lens element has positive refracting power, or an optical axis region of the image-side surface of the third lens element is convex;
- a greatest thickness of the first, second, third, fourth and fifth lens element along the optical axis is represented by Tmax;
- a second greatest thickness of a lens element along the optical axis among the first lens element to the fifth lens element is represented by Tmax2;
- a f-number of the optical imaging lens is represented by Fno;
- an image height of the optical imaging lens is represented by ImgH;
- a distance from the object-side surface of the first lens element to an image plane along the optical axis is represented by TTL;
- an effective focal length of the optical imaging lens is represented by EFL;
- a distance from the image-side surface of the fifth lens element to an image plane along the optical axis is represented by BFL;
- and
- lens elements of the optical imaging lens are only the five lens elements described above;
- the optical imaging lens satisfies the inequalities:
- Tmax+Tmax2≤1000.000 μm, Fno/ImgH≥2.000 mm−1 and TTL/(EFL+BFL)≥1.200.
Dependencies are inferred from the claim text.