US 12,216,253 B2
Image capturing optical system, imaging apparatus and electronic device
Po-Lun Hsu, Taichung (TW); and Hsin-Hsuan Huang, Taichung (TW)
Assigned to LARGAN PRECISION CO., LTD., Taichung (TW)
Filed by LARGAN PRECISION CO., LTD., Taichung (TW)
Filed on Dec. 28, 2023, as Appl. No. 18/398,377.
Application 18/398,377 is a division of application No. 18/146,484, filed on Dec. 27, 2022, granted, now 11,971,528.
Application 18/146,484 is a continuation of application No. 17/572,950, filed on Jan. 11, 2022, granted, now 11,573,408, issued on Feb. 7, 2023.
Application 17/572,950 is a continuation of application No. 16/731,212, filed on Dec. 31, 2019, granted, now 11,256,069, issued on Feb. 22, 2022.
Application 16/731,212 is a continuation of application No. 16/384,036, filed on Apr. 15, 2019, granted, now 10,564,403, issued on Feb. 18, 2020.
Application 16/384,036 is a continuation of application No. 15/691,928, filed on Aug. 31, 2017, granted, now 10,310,227, issued on Jun. 4, 2019.
Claims priority of application No. 106105479 (TW), filed on Feb. 18, 2017.
Prior Publication US 2024/0134159 A1, Apr. 25, 2024
Int. Cl. G02B 13/00 (2006.01); G02B 9/64 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An image capturing optical system comprising seven lens elements, the seven lens elements being, in order from an object side to an image side:
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; wherein each of the seven lens elements has an object-side surface facing towards the object side and an image-side surface facing towards the image side;
wherein the object-side surface of the first lens element is concave in a paraxial region thereof; the image-side surface of the fourth lens element is convex in a paraxial region thereof; the image-side surface of the seventh lens element comprises at least one convex critical point in an off-axis region thereof;
wherein the image capturing optical system further comprises an aperture stop disposed between the second lens element and the third lens element; an absolute value of a curvature radius of the image-side surface of the fifth lens element is larger than an absolute value of a curvature radius of the object-side surface of the fifth lens element.