US 11,703,665 B2
Image capturing lens assembly, image capturing unit and electronic device
Yi-Hsiang Chuang, Taichung (TW); Wen-Yao Yang, Taichung (TW); and Tzu-Chieh Kuo, Taichung (TW)
Assigned to LARGAN PRECISION CO., LTD., Taichung (TW)
Filed by LARGAN PRECISION CO., LTD., Taichung (TW)
Filed on Nov. 30, 2020, as Appl. No. 17/107,503.
Claims priority of application No. 109134909 (TW), filed on Oct. 8, 2020.
Prior Publication US 2022/0113497 A1, Apr. 14, 2022
Int. Cl. G02B 9/62 (2006.01); G02B 13/16 (2006.01)
CPC G02B 9/62 (2013.01) [G02B 13/16 (2013.01)] 27 Claims
OG exemplary drawing
 
1. An image capturing lens assembly comprising six lens elements, the six 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, 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 the first lens element has positive refractive power, the object-side surface of the first lens element is convex in a paraxial region thereof, the fourth lens element has positive refractive power, the object-side surface of the fourth 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 sixth lens element has negative refractive power, the image-side surface of the sixth lens element is concave in a paraxial region thereof, and at least one of the object-side surface and the image-side surface of at least one lens element of the image capturing lens assembly has at least one inflection point in an off-axis region thereof;
wherein an Abbe number of the second lens element is V2, an Abbe number of the third lens element is V3, an Abbe number of the fifth lens element is V5, an Abbe number of the sixth lens element is V6, a central thickness of the third lens element is CT3, an axial distance between the third lens element and the fourth lens element is T34, an f-number of the image capturing lens assembly is Fno, half of a maximum field of view of the image capturing lens assembly is HFOV, and the following conditions are satisfied:
0.75<(V3+V5+V6)/V2<1.5;
0.10<CT3/T34<1.2;
1.4<Fno<2.5; and
45.0 degrees<HFOV<55.0 degrees;
wherein a vertical distance between a non-axial critical point on the image-side surface of the sixth lens element and an optical axis is Yc62, a maximum effective radius of the image-side surface of the sixth lens element is Y62, and the image-side surface of the sixth lens element has at least one critical point in an off-axis region thereof satisfying the following condition:
0.40<Yc62/Y62<0.75.