US 12,038,561 B2
Optical imaging lens including eight lenses of +−−++−+−, ++−++−+− or +−−+−−+− refractive powers
Run Hu, Fujian (CN); and Ou Zhou, Fujian (CN)
Assigned to Genius Electronic Optical (Xiamen) Co., Ltd., Fujian (CN)
Filed by Genius Electronic Optical (Xiamen) Co., Ltd., Fujian (CN)
Filed on Feb. 19, 2021, as Appl. No. 17/179,411.
Claims priority of application No. 202011425837.2 (CN), filed on Dec. 9, 2020.
Prior Publication US 2022/0179173 A1, Jun. 9, 2022
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 eight 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, wherein:
the third lens element has negative refracting power, and a periphery region of the object-side surface of the third lens element is concave;
an optical axis region of the image-side surface of the fourth lens element is convex;
the sixth lens element has negative refracting power, and an optical axis region of the object-side surface of the sixth lens element is convex;
the seventh lens element has positive refracting power;
wherein lens elements included by the optical imaging lens are only the eight lens elements described above, and wherein the optical imaging lens satisfies the relationship: |V2−V3|≤5.000, D12/(G45+G67)≤3.000 and (T1+G34+T8)/BFL≤1.700, wherein V2 is an Abbe number of the second lens element, V3 is an Abbe number of the third lens element, D12 is a distance from the object-side surface of the first lens element to the image-side surface of the second lens element along the optical axis, G34 is an air gap between the third lens element and the fourth lens element along the optical axis, G45 is an air gap between the fourth lens element and the fifth lens element along the optical axis, G67 is an air gap between the sixth lens element and the seventh lens element along the optical axis, T1 is a thickness of the first lens element along the optical axis, T8 is a thickness of the eighth lens element along the optical axis, BFL is a distance from the image-side surface of the eighth lens element to an image plane along the optical axis.