Patent ID: 11966013
Assignee: LARGAN PRECISION CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An 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;
wherein the first lens element has positive refractive power, the sixth lens element has at least one aspheric surface, at least one lens element has at least one lens surface with at least one inflection point, and at least one lens element has an Abbe number smaller than 20.0;
wherein the imaging lens assembly further comprises an aperture stop disposed between an imaged object and the third lens element, an Abbe number of the fourth lens element is V4, a curvature radius of an object-side surface of the first lens element is R1, a curvature radius of an image-side surface of the fifth lens element is R10, a curvature radius of an image-side surface of the sixth lens element is R12, an axial distance between the aperture stop and the image-side surface of the sixth lens element is SD, an axial distance between the object-side surface of the first lens element and the image-side surface of the sixth lens element is TD, and the following conditions are satisfied:

10.0<V4≤23.8;

−1.50<(R1−R12)/(R1+R12)<0;

−1.8<R10/R12<1.3; and

0.75<SD/TD<0.90.