US 12,411,314 B2
Image capturing optical lens system, imaging apparatus and electronic device
Kuan-Ting Yeh, Taichung (TW); and Wei-Yu Chen, Taichung (TW)
Assigned to LARGAN PRECISION CO., LTD., Taichung (TW)
Filed by LARGAN PRECISION CO., LTD., Taichung (TW)
Filed on Feb. 20, 2024, as Appl. No. 18/581,532.
Application 18/581,532 is a continuation of application No. 17/376,250, filed on Jul. 15, 2021, granted, now 11,940,597.
Claims priority of application No. 110103723 (TW), filed on Feb. 1, 2021.
Prior Publication US 2024/0192468 A1, Jun. 13, 2024
Int. Cl. G02B 13/00 (2006.01); G02B 9/34 (2006.01)
CPC G02B 13/004 (2013.01) [G02B 9/34 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An image capturing optical lens system comprising four lens elements, the four 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 and a fourth lens element;
wherein the second lens element has negative refractive power;
the third lens element has positive refractive power;
the fourth lens element has an object-side surface being concave in a paraxial region thereof;
wherein the image capturing optical lens system further comprises an aperture stop disposed between the second lens element and the fourth lens element; a curvature radius of an object-side surface of the third lens element and a curvature radius of an image-side surface of the third lens element have the same sign; an axial distance between the second lens element and the third lens element is greater than an axial distance between the third lens element and the fourth lens element;
wherein an Abbe number of the second lens element is V2, an Abbe number of the third lens element is V3, a central thickness of the first lens element is CT1, a central thickness of the second lens element is CT2, and the following conditions are satisfied:
10<V2+V3<70; and
0.30<CT1/CT2<3.0.