US 11,719,915 B2
Optical imaging lens including eight lenses of +−+−++−+, −−+−−+−− or +−+−++−−, or nine lenses of +−+−++−− or +−+−++−+− refractive powers
Hung-Chien Hsieh, Fujian (CN); Huabin Liao, Fujian (CN); and Lanlan Zhang, Fujian (CN)
Assigned to Genius Electronic Optical (Xiamen) Co., Ltd., Xiamen (CN)
Filed by Genius Electronic Optical (Xiamen) Co., Ltd., Fujian (CN)
Filed on Sep. 8, 2020, as Appl. No. 17/14,990.
Claims priority of application No. 202010571664.9 (CN), filed on Jun. 22, 2020.
Prior Publication US 2021/0396965 A1, Dec. 23, 2021
Int. Cl. G02B 13/00 (2006.01); G02B 9/64 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01)] 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, 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 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 is arranged to be a lens element in a first order from the object side to the image side;
a periphery region of image-side surface of the first lens element is convex;
the second lens element is arranged to be a lens element in a second order from the object side to the image side;
the third lens element is arranged to be a lens element in a third order from the object side to the image side and has positive refracting power;
the fourth lens element is arranged to be a lens element in a fourth order from the object side to the image side and has negative refracting power;
a periphery region of object-side surface of the fourth lens element is concave;
the fifth lens element is arranged to be a lens element in a fifth order from the object side to the image side;
the sixth lens element is arranged to be a lens element in a sixth order from the object side to the image side and has positive refracting power;
the seventh lens element is arranged to be a lens element in a seventh order from the object side to the image side and has negative refracting power;
the eighth lens element is arranged to be a lens element in a first order from the image side to the object side; and
the optical imaging lens satisfies one of the third, fourth, fifth and sixth lens element is the lens element with the maximum thickness along the optical axis.