US 12,455,433 B2
Optical imaging lens including six lenses of −+−+−−, −+−++−, −+−+++ or −+++−− refractive powers
Qingzhi Zhu, Fujian (CN); Jiali Lian, Fujian (CN); and Chuanbo Dong, Fujian (CN)
Assigned to GENIUS ELECTRONIC OPTICAL (XIAMEN) CO., LTD., Fujian (CN)
Filed by GENIUS ELECTRONIC OPTICAL (XIAMEN) CO., LTD., Fujian (CN)
Filed on Jan. 16, 2023, as Appl. No. 18/154,872.
Application 18/154,872 is a continuation of application No. 16/984,160, filed on Aug. 4, 2020, granted, now 11,579,404.
Claims priority of application No. 202010504458.6 (CN), filed on Jun. 5, 2020.
Prior Publication US 2023/0305268 A1, Sep. 28, 2023
Int. Cl. G02B 9/62 (2006.01); G02B 13/00 (2006.01)
CPC G02B 9/62 (2013.01) [G02B 13/0045 (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 and a sixth lens element arranged in sequence from an object side to an image side along an optical axis, wherein each of the first lens element to the sixth lens element comprises an object-side surface facing the object side and allowing an imaging ray to pass through and an image-side surface facing the image side and allowing the imaging ray to pass through,
a periphery region of the object-side surface of the first lens element is convex;
a periphery region of the image-side surface of the third lens element is concave;
an optical axis region of the object-side surface of the fifth lens element is concave; and an optical axis region of the image-side surface of the fifth lens element is convex; and
an optical axis region of the object-side surface of the sixth lens element is convex,
wherein the optical imaging lens only has the abovementioned six lens elements,
wherein the optical imaging lens satisfies:
TL/EFL≤2.900;
TTL/(T5+G56+T6)≥6.500;
EFL/BFL≥1.300; and
TTL/AAG≥4.900,
wherein TL is a distance from the object-side surface of the first lens element to the image-side surface of the sixth lens element along the optical axis, EFL is an effective focal length of the optical imaging lens, TTL is a distance from the object-side surface of the first lens element to an image plane of the optical imaging lens along the optical axis, T5 is a thickness of the fifth lens element along the optical axis, G56 is 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, T6 is a thickness of the sixth lens element along the optical axis, BFL is a distance from the image-side surface of the sixth lens element to the image plane along the optical axis, and AAG is a sum of five air gaps of the first lens element to the sixth lens element along the optical axis.