Patent ID: 11874438
Assignee: LARGAN PRECISION CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
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 having negative refractive power; a third lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof; a fourth lens element having positive refractive power; a fifth lens element having negative refractive power; and a sixth lens element having positive refractive power; wherein a total number of lens elements in the optical imaging lens assembly is six; wherein the optical imaging lens assembly further comprises an aperture stop disposed between the third lens element and the fourth lens element, an axial distance between the first lens element and the second lens element is a maximum among axial distances between each of all adjacent lens elements of the optical imaging lens assembly, and a central thickness of the fourth lens element is smaller than a central thickness of the sixth lens element; wherein a curvature radius of the object-side surface of the third lens element is R5, a curvature radius of the image-side surface of the third lens element is R6, a curvature radius of an object-side surface of the fifth lens element is R9, a curvature radius of an image-side surface of the fifth lens element is R10, a curvature radius of an object-side surface of the sixth lens element is R11, a curvature radius of an image-side surface of the sixth lens element is R12, an Abbe number of the third lens element is V3, an Abbe number of the fourth lens element is V4, an Abbe number of the fifth lens element is V5, and the following conditions are satisfied: 0.0<(R9+R10)/(R9−R10); 30<V3+V4+V5<105; |R11/R12|<0.50; and |R6/R5|<1.50.