Optical imaging lens assembly
An optical imaging lens assembly is disclosed. The optical imaging lens assembly includes, sequentially along an optical axis from an object side to an image side, a first lens to a fifth lens. The first lens may have a positive refractive power and a concave object-side surface. The second lens may have a positive or a negative refractive power and a concave object-side surface. The third lens may have a positive or a negative refractive power. The fourth lens may have a positive refractive power and a convex image-side surface. The fifth lens may have a negative refractive power, and an object-side surface of the fifth lens and an image-side surface of the fifth lens may both be concave surfaces. 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: CT3/CT4≥1.5.
1. An optical imaging lens assembly comprising, sequentially along an optical axis from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens,
wherein the first lens has a positive refractive power, and an object-side surface of the first lens is a convex surface;
the second lens has a positive refractive power or a negative refractive power, and an object-side surface of the second lens is a concave surface;
the third lens has a positive refractive power or a negative refractive power;
the fourth lens has a positive refractive power, and an image-side surface of the fourth lens is a convex surface;
the fifth lens has a negative refractive power, and an object-side surface of the fifth lens and an image-side surface of the fifth lens are concave surfaces;
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: CT3/CT4≥1.5; and
a radius of curvature R9 of the object-side surface of the fifth lens and a center thickness CT5 of the fifth lens on the optical axis satisfy: −7<R9/CT5≤−5.
2. The optical imaging lens assembly according to claim 1 , wherein half of a maximal field-of-view HFOV of the optical imaging lens assembly satisfies: HFOV≥45°.
3. The optical imaging lens assembly according to claim 1 , wherein the 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: −0.9<R10/R9<−0.7.
4. The optical imaging lens assembly according to claim 1 , wherein an effective focal length f1 of the first lens and a center thickness CT1 of the first lens on the optical axis satisfy: 8.0<f1/CT1<11.0.
5. The optical imaging lens assembly according to claim 4 , wherein the effective focal length f1 of the first lens and a radius of curvature R1 of the object-side surface of the first lens satisfy: 1.0<f1/R1<4.0.
6. The optical imaging lens assembly according to claim 1 , wherein an effective focal length f of the optical imaging lens assembly and an effective focal length f4 of the fourth lens satisfy: 0.6≤f4/f<0.8.
7. The optical imaging lens assembly according to claim 6 , wherein the effective focal length f4 of the fourth lens and the center thickness CT4 of the fourth lens on the optical axis satisfy: 4.0<f4/CT4<5.0.
8. The optical imaging lens assembly according to claim 7 , wherein the effective focal length f4 of the fourth lens and an effective focal length f5 of the fifth lens satisfy: −1.6<f4/f5<−1.4.
9. The optical imaging lens assembly according to claim 1 , wherein a radius of curvature R5 of an object-side surface of the third lens and a radius of curvature R6 of an image-side surface of the third lens satisfy: 0<|R6/R5|<0.5.
10. An optical imaging lens assembly comprising, sequentially along an optical axis from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens,
wherein each of the first lens and the fourth lens has a positive refractive power;
at least one of the second lens, the third lens, or the fifth lens has a negative refractive power;
half of a maximal field-of-view HFOV of the optical imaging lens assembly satisfies: HFOV≥45°;
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: CT3/CT4≥1.5; and
a radius of curvature R9 of an object-side surface of the fifth lens and a center thickness CT5 of the fifth lens on the optical axis satisfy: −7<R9/CT5≤−5.
11. The optical imaging lens assembly according to claim 10 , wherein the radius of curvature R9 of the object-side surface of the fifth lens and a radius of curvature R10 of an image-side surface of the fifth lens satisfy: −0.9<R10/R9<−0.7.
12. The optical imaging lens assembly according to claim 10 , wherein an effective focal length f1 of the first lens and a center thickness CT1 of the first lens on the optical axis satisfy: 8.0<f1/CT1<11.0.
13. The optical imaging lens assembly according to claim 12 , wherein the effective focal length f1 of the first lens and a radius of curvature R1 of an object-side surface of the first lens satisfy: 1.0<f1/R1<4.0.
14. The optical imaging lens assembly according to claim 12 , wherein an effective focal length f of the optical imaging lens assembly and an effective focal length f4 of the fourth lens satisfy: 0.6≤f4/f<0.8.
15. The optical imaging lens assembly according to claim 14 , wherein the effective focal length f4 of the fourth lens and the center thickness CT4 of the fourth lens on the optical axis satisfy: 4.0<f4/CT4<5.0.
16. The optical imaging lens assembly according to claim 15 , wherein the effective focal length f4 of the fourth lens and an effective focal length f5 of the fifth lens satisfy: −1.6<f4/f5<−1.4.