US 11,719,916 B2
Optical imaging lens
Lanlan Zhang, Xiamen (CN); Xinming Liu, Xiamen (CN); Hai Lin, Xiamen (CN); Chuanbo Dong, Xiamen (CN); and Hung-Chien Hsieh, Taichung (TW)
Assigned to Genius Electronic Optical (Xiamen) Co., Ltd., Xiamen (CN)
Filed by Genius Electronic Optical (Xiamen) Co., Ltd., Xiamen (CN)
Filed on Sep. 28, 2020, as Appl. No. 17/34,293.
Claims priority of application No. 202010863979.0 (CN), filed on Aug. 25, 2020.
Prior Publication US 2022/0066143 A1, Mar. 3, 2022
Int. Cl. G02B 13/18 (2006.01); G02B 13/00 (2006.01); G02B 9/62 (2006.01); G02B 27/00 (2006.01); H04N 23/55 (2023.01)
CPC G02B 13/0045 (2013.01) [G02B 9/62 (2013.01); G02B 27/0025 (2013.01); H04N 23/55 (2023.01)] 20 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, 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 as well as 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 object-side surface of the second lens element is concave;
a periphery 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 sixth lens element is concave;
lens elements included by the optical imaging lens are only the six lens elements described above;
a half field of view of the optical imaging lens is represented by HFOV;
a sum of five air gaps from the first lens element to the sixth lens element along the optical axis is represented by AAG;
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 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 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 an inequality: HFOV/(AAG+BFL)≥16.000 degrees/mm and an inequality: G12/(G45+G56)≥1.300.