US 12,265,205 B2
Optical imaging system assembly, imaging apparatus and electronic device
Chun-Yen Chen, Taichung (TW); and Tzu-Chieh Kuo, Taichung (TW)
Assigned to LARGAN PRECISION CO., LTD., Taichung (TW)
Filed by LARGAN PRECISION CO., LTD., Taichung (TW)
Filed on Apr. 12, 2022, as Appl. No. 17/718,445.
Claims priority of application No. 110133479 (TW), filed on Sep. 8, 2021.
Prior Publication US 2023/0070553 A1, Mar. 9, 2023
Int. Cl. G02B 13/00 (2006.01); G02B 9/64 (2006.01); G02B 13/18 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01); G02B 13/18 (2013.01)] 27 Claims
OG exemplary drawing
 
1. An optical imaging system assembly comprising seven lens elements, the seven lens elements being, in order from an object side to an image side along an optical path:
a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element; each of the seven lens elements has an object-side surface towards the object side and an image-side surface towards the image side;
wherein the second lens element has negative refractive power;
the object-side surface of the third lens element is convex in a paraxial region thereof;
the image-side surface of the fifth lens element is convex in a paraxial region thereof;
the sixth lens element has negative refractive power, the object-side surface of the sixth lens element is convex in a paraxial region thereof, the image-side surface of the sixth lens element is concave in a paraxial region thereof, and
the seventh lens element has negative refractive power;
wherein at least one of the object-side surface and the image-side surface of at least one of the first lens element to the seventh lens element comprises at least one inflection point;
wherein an Abbe number of the fourth lens element is V4, an Abbe number of the fifth lens element is V5, an Abbe number of the sixth lens element is V6, an axial distance between the first lens element and the second lens element is T12, an axial distance between the second lens element and the third lens element is T23, and the following conditions are satisfied:
4.4<(V5+V6)/V4<12; and
0.70<T23/T12<3.6.