Optical imaging lens assembly

An optical imaging lens assembly comprising, 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 and a fifth lens,

• wherein the first lens has a positive refractive power, an object-side surface of the first lens is a convex surface, and an image-side surface of the first lens is a concave surface;
• the second lens has a positive refractive power or a negative refractive power;
• the third lens has a negative refractive power;
• the fourth lens has a positive refractive power;
• the fifth lens has a negative refractive power, and an image-side surface of the fifth lens is a convex surface;
• and
• a total effective focal length f of the optical imaging lens assembly and an entrance pupil diameter EPD of the optical imaging lens assembly satisfy:
• f/EPD≤1.9,
• wherein the total effective focal length f of the optical imaging lens assembly and an effective focal length f2 of the second lens satisfy:
• f/|f2|≤0.1.