Optical imaging lens assembly
Embodiments of the present disclosure provide an optical imaging lens assembly, which comprises, sequentially along an optical axis from an object side to an image side: a first lens, having a positive refractive power; a second lens, having a negative refractive power; a third lens, having a positive refractive power; a fourth lens, having a negative refractive power; a fifth lens, having a positive refractive power; a sixth lens, having a positive refractive power; and a seventh lens, having a negative refractive power. A total effective focal length f of the optical imaging lens assembly and half of a maximal field-of-view Semi-FOV of the optical imaging lens assembly satisfy: f×tan(Semi-FOV)≥5.0 mm; and a center thickness CT1 of the first lens on the optical axis and an edge thickness ET1 of the first lens satisfy: 1.5<CT1/ET1<2.0.
1. An optical imaging lens assembly, comprising, sequentially along an optical axis from an object side to an image side:
a first lens, having a positive refractive power;
a second lens, having a negative refractive power;
a third lens, having a positive refractive power;
a fourth lens, having a negative refractive power;
a fifth lens, having a positive refractive power;
a sixth lens, having a positive refractive power; and
a seventh lens, having a negative refractive power,
wherein a total effective focal length f of the optical imaging lens assembly and half of a maximal field-of-view Semi-FOV of the optical imaging lens assembly satisfy: f×tan(Semi-FOV)≥5.0 mm;
an effective focal length f7 of the seventh lens, a radius of curvature R13 of the object-side surface of the seventh lens, and a radius of curvature R14 of the image-side surface of the seventh lens satisfy: −1.5<f7/(R13−R14)<−0.5; and
a center thickness CT1 of the first lens on the optical axis and an edge thickness ET1 of the first lens satisfy: 1.5<CT1/ET1<2.0.
2. The optical imaging lens assembly according to claim 1 , wherein an entrance pupil diameter EPD of the optical imaging lens assembly and a center thickness CT1 of the first lens on the optical axis satisfy: 2.3≤EPD/CT1<3.0.
3. The optical imaging lens assembly according to claim 1 , wherein an effective focal length f6 of the sixth lens, a radius of curvature R11 of the object-side surface of the sixth lens, and a radius of curvature R12 of the image-side surface of the sixth lens satisfy: 1.5<f6/R11−f6/R12<2.0.
4. The optical imaging lens assembly according to claim 1 , wherein an effective focal length f1 of the first lens and a combined focal length f12 of the first lens and the second lens satisfy: 1.0<f12/f1<1.5.
5. The optical imaging lens assembly according to claim 1 , wherein an effective focal length f2 of the second lens and an effective focal length f3 of the third lens satisfy: −2.0<f2/f3≤−1.5.
6. The optical imaging lens assembly according to claim 1 , wherein a total effective focal length f of the optical imaging lens assembly, an effective focal length f5 of the fifth lens, and an effective focal length f6 of the sixth lens satisfy: |f/f5−f/f6|<0.3.
7. The optical imaging lens assembly according to claim 1 , wherein a combined focal length f56 of the fifth lens and the sixth lens and the effective focal length f7 of the seventh lens satisfy: −3.0<f56/f7≤−1.4.
8. The optical imaging lens assembly according to claim 1 , wherein a center thickness CT6 of the sixth lens on the optical axis, a spacing distance T56 between the fifth lens and the sixth lens on the optical axis, and a distance SAG62 on the optical axis from an intersection point of an image-side surface of the sixth lens and the optical axis to a vertex of a maximal effective radius of the image-side surface of the sixth lens satisfy: −1.0≤(T56+CT6)/SAG62<−0.5.
9. The optical imaging lens assembly according to claim 1 , wherein a center thickness CT5 of the fifth lens on the optical axis, a spacing distance T56 between the fifth lens and the sixth lens on the optical axis, and a distance SAG61 on the optical axis from an intersection point of an object-side surface of the sixth lens and the optical axis to a vertex of a maximal effective radius of the object-side surface of the sixth lens satisfy: −1.5<CT5/(SAG61+T56)≤−0.8.
10. The optical imaging lens assembly according to claim 1 , wherein a distance SAG71 on the optical axis from an intersection point of an object-side surface of the seventh lens and the optical axis to a vertex of a maximal effective radius of the object-side surface of the seventh lens and a spacing distance T67 between the sixth lens and the seventh lens on the optical axis satisfy: −1.6<SAG71/T67≤−1.2.
11. The optical imaging lens assembly according to claim 1 , wherein a center thickness CT3 of the third lens on the optical axis and a center thickness CT4 of the fourth lens on the optical axis satisfy: 1.6<CT3/CT4<2.0.
12. The optical imaging lens assembly according to claim 1 , wherein a spacing distance T23 between the second lens and the third lens on the optical axis, a spacing distance T45 between the fourth lens and the fifth lens on the optical axis, a spacing distance T67 between the sixth lens and the seventh lens on the optical axis, and a sum EAT of spacing distances between any two adjacent lenses in the first to seventh lenses on the optical axis satisfy: 0.8< (T23+T45+T67)/ΣAT<1.0.
13. The optical imaging lens assembly according to claim 1 , wherein an effective focal length f5 of the fifth lens, a radius of curvature R9 of the object-side surface of the fifth lens, and a radius of curvature R10 of the image-side surface of the fifth lens satisfy: −11.0<f5/R9+f5/R10<−4.5.
14. The optical imaging lens assembly according to claim 1 , wherein a distance TTL from the object-side surface of first lens to the image plane of the optical imaging lens assembly on the optical axis and half of a diagonal length ImgH of an effective pixel area on the image plane of the optical imaging lens assembly satisfy: ImgH/TTL>0.6.
15. An optical imaging lens assembly, comprising, sequentially along an optical axis from an object side to an image side:
a first lens, having a positive refractive power;
a second lens, having a negative refractive power;
a third lens, having a positive refractive power;
a fourth lens, having a negative refractive power;
a fifth lens, having a positive refractive power;
a sixth lens, having a positive refractive power; and
a seventh lens, having a negative refractive power,
wherein a total effective focal length f of the optical imaging lens assembly and half of a maximal field-of-view Semi-FOV of the optical imaging lens assembly satisfy: f×tan(Semi-FOV)≥5.0 mm;
an effective focal length f7 of the seventh lens, a radius of curvature R13 of the object-side surface of the seventh lens, and a radius of curvature R14 of the image-side surface of the seventh lens satisfy: −1.5<f7/(R13−R14)<−0.5; and
a spacing distance T23 between the second lens and the third lens on the optical axis, a spacing distance T45 between the fourth lens and the fifth lens on the optical axis, a spacing distance T67 between the sixth lens and the seventh lens on the optical axis, and a sum EAT of spacing distances between any two adjacent lenses in the first to seventh lenses on the optical axis satisfy: 0.8< (T23+T45+T67)/ΣAT<1.0.