Optical imaging lens assembly
View Patent ↗The present disclosure discloses an optical imaging lens assembly. The optical imaging lens assembly includes, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The first lens has a positive refractive power, and an object-side surface thereof is a convex surface; the second lens has a negative refractive power, and an image-side surface thereof is a concave surface; each of the third lens, the fourth lens, the fifth lens and the sixth lens have a positive refractive power or a negative refractive power; the seventh lens has a negative refractive power, and an object-side surface thereof is a concave surface. A total effective focal length f of the optical imaging lens assembly and an effective focal length f1 of the first lens satisfy f/f1≥2.0.
1. An optical imaging lens assembly, comprising, sequentially from an object side of the optical imaging lens assembly to an image side the optical imaging lens assembly along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh 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 negative refractive power, and an image-side surface of the second lens is a concave surface;
the third lens has a positive refractive power;
the fourth lens has a negative refractive power;
each of the fifth lens and the sixth lens has a positive refractive power or a negative refractive power;
the seventh lens has a negative refractive power, and an object-side surface of the seventh lens is a concave surface;
a total effective focal length f of the optical imaging lens assembly and an effective focal length f1 of the first lens satisfy f/f1≥2.0;
a radius or curvature R7 of an object-side surface of the fourth lens and a radius of curvature R12 of an image-side surface of the sixth lens satisfy 0<R7/R12<3.0; and
an effective focal length f7 of the seventh lens, a radius of curvature R11 of an object-side surface of the sixth lens and a radius of curvature R12 of an image-side surface of the sixth lens satisfy 1.5<f7/|R11+R12|.
2. The optical imaging lens assembly according to claim 1 , wherein the total effective focal length f of the optical imaging lens assembly and the effective focal length f1 of the first lens satisfy 2.0≤f/f1≤7.0.
3. The optical imaging lens assembly according to claim 1 , wherein a sum of center thicknesses ΣCT on the optical axis of the first lens to the seventh lens and a sum of spaced distances ΣAT on the optical axis between any two adjacent lenses of the first lens to the seventh lens satisfy ΣCT/ΣAT<2.5.
4. The optical imaging lens assembly according to claim 1 , wherein an effective focal length f3 of the third lens, an effective focal length f4 of the fourth lens and a distance TTL on the optical axis from a center of the object-side surface of the first lens to an imaging plane of the optical imaging lens assembly satisfy −5.5<(f3+f4)/TTL<5.0.
5. The optical imaging lens assembly according to claim 1 , wherein the total effective focal length f of the optical imaging lens assembly and a radius of curvature R4 of the image-side surface of the second lens satisfy 1.0<f/R4<3.5.
6. The optical imaging lens assembly according to claim 1 , wherein an effective focal length f3 of the third lens, an effective focal length f4 of the fourth lens and an effective focal length f5 of the fifth lens satisfy 0≤f3/|f4+f5|≤3.0.
7. The optical imaging lens assembly according to claim 1 , wherein a radius of curvature R3 of an object-side surface of the second lens and a radius of curvature R4 of the image-side surface of the second lens satisfy |R3+R4|/|R3−R4|<3.5.
8. The optical imaging lens assembly according to claim 1 , wherein an abbe number V5 of the fifth lens, an abbe number V6 of the sixth lens and an abbe number V7 of the seventh lens satisfy 1.0<(V5+V6)/V7<7.0.
9. An optical imaging lens assembly, comprising, sequentially from an object side of the optical imaging lens assembly to an image side of the optical imaging lens assembly along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh 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 negative refractive power, and an image-side surface of the second lens is a concave surface;
the third lens has a positive refractive power;
each of the fifth lens and the sixth lens has a positive refractive power or a negative refractive power;
the fourth lens has a negative refractive power, and an object-side surface of the fourth lens is a concave surface;
the seventh lens has a negative refractive power, of which an object-side surface is a concave surface;
an effective focal length f7 of the seventh lens and an effective focal length f2 of the second lens satisfy 0.5<f7/f2<2.0;
a total effective focal length f of the optical imaging lens assembly and an effective focal length f1 of the first lens satisfy f/f1≥2.0; and
a radius or curvature R7 of an object-side surface of the fourth lens and a radius of curvature R12 of an image-side surface of the sixth lens satisfy 0<R7/R12<3.0; and
an effective focal length f7 of the seventh lens, a radius of curvature R11 of an object-side surface of the sixth lens and a radius of curvature R12 of an image-side surface of the sixth lens satisfy 1.5<f7/|R11+R12|.
10. The optical imaging lens assembly according to claim 9 , wherein a radius of curvature R3 of an object-side surface of the second lens and a radius of curvature R4 of the image-side surface of the second lens satisfy |R3+R4|/|R3−R4|<3.5.
11. The optical imaging lens assembly according to claim 9 , wherein a sum of center thicknesses ΣCT on the optical axis of the first lens to the seventh lens and a sum of spaced distances ΣAT on the optical axis between any two adjacent lenses of the first lens to the seventh lens satisfy ΣCT/ΣAT<2.5.
12. An optical imaging lens assembly, comprising, sequentially from an object side of the optical imaging lens assembly to an image side of the optical imaging lens assembly along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh 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 negative refractive power, and an image-side surface of the second lens is a concave surface;
the third lens has a positive refractive power;
the fourth lens has a negative refractive power;
each of the fifth lens and the sixth lens has a positive refractive power or a negative refractive power;
an object-side surface of the sixth lens is a concave surface, and an image-side surface of the sixth lens is a convex surface;
the seventh lens has a negative refractive power, and an object-side surface of the seventh lens is a concave surface;
half of a maximal field-of-view HFOV of the optical imaging lens assembly satisfies HFOV≤35°;
a total effective focal length f of the optical imaging lens assembly and an effective focal length f1 of the first lens satisfy f/f1≥2.0;
a radius or curvature R7 of an object-side surface of the fourth lens and a radius of curvature R12 of an image-side surface of the sixth lens satisfy 0<R7/R12<3.0; and
an effective focal length f7 of the seventh lens, a radius of curvature R11 of an object-side surface of the sixth lens and a radius of curvature R12 of an image-side surface of the sixth lens satisfy 1.5<f7/|R11+R12|.
13. The optical imaging lens assembly according to claim 12 , wherein an effective focal length f3 of the third lens, an effective focal length f4 of the fourth lens and an effective focal length f5 of the fifth lens satisfy 0≤f3/|f4+f5|≤3.0.
14. The optical imaging lens assembly according to claim 12 , wherein an effective focal length f3 of the third lens, an effective focal length f4 of the fourth lens and a distance TTL on the optical axis from a center of the object-side surface of the first lens to an imaging plane of the optical imaging lens assembly satisfy −5.5<(f3+f4)/TTL<5.0.
15. The optical imaging lens assembly according to claim 12 , wherein a total effective focal length f of the optical imaging lens assembly and a radius of curvature R4 of the image-side surface of the second lens satisfy 1.0<f/R4<3.5.