Patent ID: 11971522
Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An optical imaging lens assembly, sequentially from an object side to an image side along an optical axis, comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens,
wherein,
the first lens has a positive refractive power with a convex object-side surface;
the second lens has a refractive power with a concave image-side surface;
the third lens has a refractive power with a convex object-side surface;
the fourth lens has a refractive power with a concave object-side surface;
the fifth lens has a refractive power; and
the sixth lens has a refractive power with a concave object-side surface at a paraxial region;
wherein a number of lenses included in the optical imaging lens assembly is six;
wherein a total effective focal length f of the optical imaging lens assembly and half of a maximal field-of-view angle HFOV of the optical imaging lens assembly satisfy 1.6<f*TAN(HFOV)<2.4;
an effective focal length f1 of the first lens and a sum ΣCT of center thicknesses along the optical axis of the first lens to the sixth lens satisfy 1<f1/ΣCT<2;
a center thickness CT2 along the optical axis of the second lens, a center thickness CT3 along the optical axis of the third lens and a center thickness CT4 along the optical axis of the fourth lens satisfy (CT2+CT4)/CT3<1;
a maximum effective radius DT11 of the object-side surface of the first lens and a maximum effective radius DT61 of the object-side surface of the sixth lens satisfy 0.6<DT11/DT61<1; and
a spaced interval T23 along the optical axis between the second lens and the third lens, a spaced interval T34 along the optical axis between the third lens and the fourth lens, a spaced interval T45 along the optical axis between the fourth lens and the fifth lens satisfy (T23+T45)/T34<0.4.