US 11,940,605 B2
Photographing optical lens assembly, image capturing unit and electronic device
Wei-Yu Chen, Taichung (TW)
Assigned to LARGAN PRECISION CO., LTD., Taichung (TW)
Filed by LARGAN PRECISION CO., LTD., Taichung (TW)
Filed on Apr. 3, 2023, as Appl. No. 18/130,348.
Application 18/130,348 is a continuation of application No. 17/517,450, filed on Nov. 2, 2021, granted, now 11,656,440.
Application 17/517,450 is a continuation of application No. 16/794,064, filed on Feb. 18, 2020, granted, now 11,194,132, issued on Dec. 7, 2021.
Application 16/794,064 is a continuation of application No. 16/386,172, filed on Apr. 16, 2019, granted, now 10,606,039, issued on Mar. 31, 2020.
Application 16/386,172 is a continuation of application No. 15/955,494, filed on Apr. 17, 2018, granted, now 10,310,236, issued on Jun. 4, 2019.
Application 15/955,494 is a continuation of application No. 15/676,259, filed on Aug. 14, 2017, granted, now 9,977,225, issued on May 22, 2018.
Application 15/676,259 is a continuation of application No. 15/147,679, filed on May 5, 2016, granted, now 9,766,433, issued on Sep. 19, 2017.
Application 15/147,679 is a continuation of application No. 14/513,827, filed on Oct. 14, 2014, granted, now 9,366,847, issued on Jun. 14, 2016.
Claims priority of application No. 103126474 (TW), filed on Aug. 1, 2014.
Prior Publication US 2023/0305273 A1, Sep. 28, 2023
Int. Cl. G02B 13/00 (2006.01); G02B 9/64 (2006.01); G02B 27/00 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01); G02B 27/0025 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A photographing optical lens assembly 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, and each of the seven lens elements having an object-side surface facing toward the object side and an image-side surface facing toward the image side;
wherein the second lens element has negative refractive power, the image-side surface of the seventh lens element is concave in a paraxial region thereof, the image-side surface of the seventh lens element has at least one convex shape in an off-axis region thereof, an axial distance between the sixth lens element and the seventh lens element is maximum among axial distances between each of all adjacent lens elements of the photographing optical lens assembly, an absolute value of a curvature radius of the object-side surface of the fourth lens element is larger than an absolute value of a curvature radius of the image-side surface of the seventh lens element, a curvature radius of the object-side surface of the sixth lens element and a curvature radius of the image-side surface of the sixth lens element have the same sign, a central thickness of the first lens element is larger than a central thickness of the third lens element, and a refractive index of the second lens element is larger than a refractive index of the first lens element.