US 11,940,667 B2
Optical photographing lens assembly, image capturing device and electronic device
Dung-Yi Hsieh, Taichung (TW); Chun-Yen Chen, Taichung (TW); Chun-Che Hsueh, 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 Oct. 20, 2022, as Appl. No. 18/048,072.
Application 18/048,072 is a continuation of application No. 16/781,375, filed on Feb. 4, 2020, granted, now 11,513,318.
Application 16/781,375 is a continuation of application No. 15/827,233, filed on Nov. 30, 2017, granted, now 10,591,701, issued on Mar. 17, 2020.
Application 15/827,233 is a continuation of application No. 14/834,629, filed on Aug. 25, 2015, granted, now 9,864,171, issued on Jan. 9, 2016.
Claims priority of application No. 104124080 (TW), filed on Jul. 24, 2015.
Prior Publication US 2023/0071318 A1, Mar. 9, 2023
Int. Cl. G02B 9/60 (2006.01); G02B 13/00 (2006.01)
CPC G02B 9/60 (2013.01) [G02B 13/0045 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An optical photographing lens assembly comprising five lens elements, the five 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 and a fifth lens element;
wherein each of the five lens elements has an object-side surface facing towards the object side and an image-side surface facing towards the image side;
wherein the first lens element has positive refractive power, the object-side surface of the first lens element is convex in a paraxial region thereof, and the image-side surface of the first lens element is concave in a paraxial region thereof; the second lens element has negative refractive power, the object-side surface of the second lens element is convex in a paraxial region thereof, and the image-side surface of the second lens element is concave in a paraxial region thereof; the third lens element has positive refractive power, the object-side surface of the third lens element is convex in a paraxial region thereof, and the image-side surface of the third lens element is concave in a paraxial region thereof; the object-side surface of the fourth lens element is concave in a paraxial region thereof;
wherein the optical photographing lens assembly further comprises an aperture stop; a focal length of the fourth lens element and a focal length of the fifth lens element have different signs; a focal length of the optical photographing lens assembly is f, an axial distance between the object-side surface of the first lens element and an image surface is TL, an axial distance between the aperture stop and the image-side surface of the fifth lens element is SD, an axial distance between the object-side surface of the first lens element and the image-side surface of the fifth lens element is TD, a curvature radius of the object-side surface of the first lens element is R1, a curvature radius of the image-side surface of the first lens element is R2, and the following conditions are satisfied:
0.95<f/TL<1.35;
0.60<SD/TD<1.2; and
(R1+R2)/(R1−R2)<−1.0.