US 11,953,654 B2
Image capturing lens system, image capturing apparatus and electronic device
Chun-Che Hsueh, Taichung (TW); Hsin-Hsuan Huang, Taichung (TW); and Shu-Yun Yang, Taichung (TW)
Assigned to LARGAN PRECISION CO., LTD., Taichung (TW)
Filed by LARGAN PRECISION CO., LTD., Taichung (TW)
Filed on Aug. 30, 2021, as Appl. No. 17/460,427.
Application 17/460,427 is a continuation of application No. 16/574,155, filed on Sep. 18, 2019, granted, now 11,137,574.
Application 16/574,155 is a continuation of application No. 15/869,252, filed on Jan. 12, 2018, granted, now 10,459,197, issued on Oct. 29, 2019.
Application 15/869,252 is a continuation of application No. 15/161,431, filed on May 23, 2016, granted, now 9,904,034, issued on Feb. 27, 2018.
Claims priority of application No. 105103311 (TW), filed on Feb. 2, 2016.
Prior Publication US 2021/0389560 A1, Dec. 16, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 13/00 (2006.01); G02B 9/34 (2006.01); G02B 27/01 (2006.01)
CPC G02B 13/004 (2013.01) [G02B 9/34 (2013.01); G02B 2027/011 (2013.01); G02B 2027/0123 (2013.01); G02B 2027/0138 (2013.01); G02B 2027/015 (2013.01); G02B 2027/0152 (2013.01); G02B 27/017 (2013.01); G02B 27/0172 (2013.01); G02B 2027/0178 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An optical image lens assembly comprising, in order from an object side to an image side:
a first lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof;
a second lens element with negative refractive power having an object-side surface being concave in a paraxial region thereof;
a third lens element with positive refractive power having an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof; and
a fourth lens element having negative refractive power;
wherein the optical image lens assembly further comprises an aperture stop disposed between the first lens element and an image surface;
wherein an axial distance between the second lens element and the third lens element is a maximum among all axial distances between adjacent lens elements in the optical image lens assembly; a total number of lens elements in the optical image lens assembly is four;
wherein an f-number of the optical image lens assembly is Fno, the axial distance between the second lens element and the third lens element is T23, a central thickness of the second lens element is CT2, and the following conditions are satisfied:
1.50<Fno≤2.10; and
0.80<T23/CT2<2.50;
wherein a maximum of absolute values of curvature radii of object-side surfaces and image-side surfaces of the first lens element, the second lens element, the third lens element and the fourth lens element is an absolute value of a curvature radius of the object-side surface of the third lens element.