Optical imaging lens assembly

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

• a first lens element with positive refractive power, having a convex object-side surface;
• a second lens element with negative refractive power, having a convex object-side surface and a concave image-side surface;
• a third lens element with positive refractive power, having a convex image-side surface;
• a fourth lens element with refractive power, having a concave object-side surface, both object-side surface and image-side surface being aspheric, and being made of plastic;
• a fifth lens element with refractive power, having a concave image-side surface, and both object-side surface and image-side surface being aspheric, at least one of the object-side surface and the image-side surface having at least one inflection point, and made of plastic;
• wherein f is a focal length of the optical imaging lens assembly, f3 is a focal length of the third lens element, R1 is a curvature radius of the object-side surface of the first lens element, R2 is a curvature radius of the image-side surface of the first lens element, R6 is a curvature radius of the image-side surface of the third lens element, R9 is a curvature radius of the object-side surface of the fifth lens element, CT3 is a central thickness of the third lens element, T23 is an axial distance between the second lens element and the third lens element, T34 is an axial distance between the third lens element and the fourth lens element, and the following relations are satisfied:
• 0.82<f/f3<1.7;
• −1.5<(R1+R2)/(R1−R2)<−0.3;
• −0.8<f/R9<6.0;
• −4.5<R6/CT3<−0.5;
• 0.1<T23/T34<2.0.