Optical imaging lens assembly including seven lenses of +−++−+−, ++−+−+−, +−−+−+−, +−+−++− or +−++++− refractive powers

An optical imaging lens assembly, sequentially from an object side to an image side of the optical imaging lens assembly along an optical axis, comprising:

• a first lens having positive refractive power with a convex object-side surface and a concave image-side surface;
• a second lens having refractive power;
• a third lens having refractive power with a concave image-side surface;
• a fourth lens having positive refractive power;
• a fifth lens having negative refractive power in the paraxial region, with a convex object-side surface and a concave image-side surface;
• a sixth lens having positive refractive power with a convex object-side surface and a convex image-side surface;
• and
• a seventh lens having negative refractive power with a concave object-side surface and a concave image-side surface,
• wherein TTL/ImgH<1.30;
• and
• 5.00 mm<TTL/ImgH*f<6.00 mm,
• where TTL is a distance along the optical axis from the object-side surface of the first lens to an imaging plane of the optical imaging lens assembly, ImgH is half of a diagonal length of an effective pixel area on the imaging plane of the optical imaging lens assembly, and f is a total effective focal length of the optical imaging lens assembly,
• wherein the optical imaging lens assembly further satisfies:
• 5.00<(R13−R14)/(R13+R14)<8.00, or
• 2.00<T67/T56<5.00, or
• 2.00<(CT6+CT7)/(CT6−CT7)<4.00,
• where R13 is a radius of curvature of the object-side surface of the seventh lens, R14 is a radius of curvature of the image-side surface of the seventh lens, T67 is a spaced interval between the sixth lens and the seventh lens along the optical axis, T56 is a spaced interval between the fifth lens and the sixth lens along the optical axis, CT6 is a center thickness of the sixth lens along the optical axis, and CT7 is a center thickness of the seventh lens along the optical axis.