US 12,468,127 B2
Optical imaging lens assembly, image capturing unit and electronic device
Cheng-Yuan Liao, 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 Dec. 13, 2023, as Appl. No. 18/539,054.
Application 18/539,054 is a continuation of application No. 16/878,496, filed on May 19, 2020, granted, now 11,874,438.
Application 16/878,496 is a continuation of application No. 15/867,534, filed on Jan. 10, 2018, granted, now 10,698,180, issued on Jun. 30, 2020.
Claims priority of application No. 106133142 (TW), filed on Sep. 27, 2017.
Prior Publication US 2024/0134164 A1, Apr. 25, 2024
Int. Cl. G02B 3/02 (2006.01); G02B 9/62 (2006.01); G02B 13/00 (2006.01); G02B 13/02 (2006.01); G02B 13/06 (2006.01); G02B 13/18 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 3/02 (2013.01); G02B 9/62 (2013.01); G02B 13/006 (2013.01); G02B 13/02 (2013.01); G02B 13/06 (2013.01); G02B 13/18 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An optical imaging lens assembly comprising six lens elements, the six 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 and a sixth lens element, and each of the six lens elements having an object-side surface facing toward the object side and an image-side surface facing toward the image side;
wherein a total number of lens elements in the optical imaging lens assembly is six, the first lens element has negative refractive power, the object-side surface of the second lens element is convex in a paraxial region thereof, the image-side surface of the second lens element is concave in a paraxial region thereof, at least one of the object-side surface and the image-side surface of the second lens element has at least one inflection point, the image-side surface of the third lens element is convex in a paraxial region thereof, the object-side surface of the fourth lens element is convex in a paraxial region thereof, the fifth lens element has negative refractive power, the image-side surface of the fifth lens element is concave in a paraxial region thereof, the sixth lens element has positive refractive power, and the image-side surface of the sixth lens element is convex in a paraxial region thereof;
wherein an axial distance between the second lens element and the third lens element is larger than an axial distance between the first lens element and the second lens element, a central thickness of the third lens element is larger than an axial distance between the third lens element and the fourth lens element, and an absolute value of a curvature radius of the object-side surface of the fifth lens element is larger than an absolute value of a curvature radius of the object-side surface of the sixth lens element;
wherein a focal length of the optical imaging lens assembly is f, an entrance pupil diameter of the optical imaging lens assembly is EPD, the central thickness of the third lens element is CT3, a central thickness of the fourth lens element is CT4, and the following conditions are satisfied:
f/EPD≤2.00; and
CT4/CT3<1.0.