Optical imaging lens assembly

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

• a first lens;
• a second lens with a negative refractive power;
• a third lens with a positive refractive power, wherein an image-side surface thereof is a convex surface;
• a fourth lens with a negative refractive power, wherein an object-side surface thereof is a concave surface, and an image-side surface thereof is a concave surface;
• a fifth lens;
• and
• a sixth lens,
• wherein TTL is an on-axis distance from an object-side surface of the first lens to an imaging surface, ImgH is a half of a diagonal length of an effective pixel region on the imaging surface, and TTL and ImgH satisfy:
• TTL/ImgH≤1.35;
• a curvature radius R3 of an object-side surface of the second lens and an effective focal length f of an optical imaging lens assembly satisfy:
• |R3/f|≤1.55;
• and an effective focal length f1 of the first lens, an effective focal length f2 of the second lens, an effective focal length f3 of the third lens and the effective focal length f of the optical imaging lens assembly satisfy:
• 6.5≤|f1/f|+|f2/f|+|f3/f|≤11.5;
• and
• the effective focal length f2 of the second lens and the effective focal length f1 of the first lens satisfy:
• −6.0≤f2/f1≤−2.5.