US 12,474,549 B2
Optical imaging lens
Chuanbo Dong, Xiamen (CN); Jiayuan Zhang, Xiamen (CN); Wei-Jeh Kao, Xiamen (CN); and Hung-Chien Hsieh, Xiamen (CN)
Assigned to Genius Electronic Optical (Xiamen) Co., Ltd., Xiamen (CN)
Filed by Genius Electronic Optical (Xiamen) Co., Ltd., Xiamen (CN)
Filed on Jun. 9, 2022, as Appl. No. 17/836,301.
Claims priority of application No. 202111626317.2 (CN), filed on Dec. 28, 2021.
Prior Publication US 2023/0204922 A1, Jun. 29, 2023
Int. Cl. G02B 13/00 (2006.01); G02B 9/64 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01)] 19 Claims
OG exemplary drawing
 
1. 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 second lens element has negative refracting power, and a periphery region of the object-side surface of the second lens element is convex;
a periphery region of the object-side surface of the third lens element is concave;
the fourth lens element has negative refracting power, an optical axis region of the object-side surface of the fourth lens element is concave, and a periphery region of the image-side surface of the fourth lens element is convex;
the fifth lens element has positive refracting power, and 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;
an optical axis region of the image-side surface of the eighth lens element is concave; and
lens elements of the optical imaging lens are only the eight lens elements; and
a thickness of the first lens element along the optical axis is represented by T1, a thickness of the second lens element along the optical axis is represented by T2, a thickness of the third lens element along the optical axis is represented by T3, 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 second lens element to the object-side surface of the third lens element along the optical axis is represented by G23, and T1, T2, T3, G12 and G23 satisfy the inequality:
T1+T2+T3)/(G12+G23)≤4.000.
 
7. 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 second lens element has negative refracting power, and a periphery region of the image-side surface of the second lens element is concave;
a periphery region of the object-side surface of the third lens element is concave, and an optical axis region of the image-side surface of the third lens element is convex;
the fourth lens element has negative refracting power, and an optical axis region of the object-side surface of the fourth lens element is concave, and a periphery region of the image-side surface of the fourth lens element is convex;
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;
an optical axis region of the image-side surface of the eighth lens element is concave; and
lens elements of the optical imaging lens are only the eight lens elements;
a thickness of the first lens element along the optical axis is represented by T1, a thickness of the second lens element along the optical axis is represented by T2, a thickness of the third lens element along the optical axis is represented by T3, 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 second lens element to the object-side surface of the third lens element along the optical axis is represented by G23, and T1, T2, T3, G12 and G23 satisfy the inequality:
(T1+T2+T3)/(G12+G23)≤4.000.
 
14. 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 first lens element has positive refracting power, and a periphery region of the image-side surface of the first lens element is concave;
the second lens element has negative refracting power;
a periphery region of the object-side surface of the third lens element is concave;
an optical axis region of the object-side surface of the fourth lens element is concave, and a periphery region of the image-side surface of the fourth lens element is convex;
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 convex; and
lens elements of the optical imaging lens are only the eight lens elements; and
a maximum value of the seven air gaps from the first lens element to the eighth lens element along the optical axis is represented by Gmax, a minimum value of the seven air gaps from the first lens element to the eighth lens element along the optical axis is represented by Gmin, a maximum value of the eight thicknesses of lens elements from the first lens element to the eighth lens element along the optical axis is represented by Tmax, and a minimum value of the eight thicknesses of lens elements from the first lens element to the eighth lens element along the optical axis is represented by Tmin, and the optical imaging lens satisfies:
(Gmax−Gmin)/(Tmax−Tmin)=1.500.