US 12,405,450 B2
Optical imaging lens
Huabin Liao, Fujian (CN); Chuanbo Dong, Fujian (CN); Wei-Jeh Kao, Taichung (TW); and Hung-Chien Hsieh, Taichung (TW)
Assigned to Genius Electronic Optical (Xiamen) Co., Ltd., Fujian (CN)
Filed by Genius Electronic Optical (Xiamen) Co., Ltd., Fujian (CN)
Filed on Jun. 9, 2022, as Appl. No. 17/835,973.
Claims priority of application No. 202111626412.2 (CN), filed on Dec. 28, 2021.
Prior Publication US 2023/0204919 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, from an object side to an image side in order along an optical axis 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, the first lens element to the eighth lens element each 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;
the second lens element has negative refracting power;
the third lens element has negative refracting power and a periphery region of the object-side surface of the third lens element is concave;
the seventh lens element has negative refracting power; and
an optical axis region of the object-side surface of the eighth lens element is convex and a periphery region of the image-side surface of the eighth lens element is convex;
wherein lens elements included by the optical imaging lens are only the eight lens elements described above, Tavg567 is an average of three thicknesses from the fifth lens element to the seventh lens element along the optical axis, Tstd567 is a population standard deviation of the three thicknesses from the fifth lens element to the seventh lens element along the optical axis, Fno is a f-number of the optical imaging lens, D11t32 is defined as a distance from the object-side surface of the first lens element to the image-side surface of the third lens element along the optical axis, G78 is an air gap between the seventh lens element and the eighth lens element along the optical axis, T8 is a thickness of the eighth lens element along the optical axis to satisfy the relationship: Tavg567/Tstd567≥3.600 and Fno*D11 t32/(G78+T8)≤4.000.