Photographing lens assembly, image capturing unit and electronic device

A photographing lens assembly comprising five lens elements, the five lens elements being, in order from an object side to an image side:

• a first lens element, a second lens element, a third lens element, a fourth lens element, and a fifth lens element;
• wherein the first lens element having positive refractive power, at least one surface of the five lens elements of the photographing lens assembly has at least one inflection point, a central thickness of the first lens element is the maximum among all central thicknesses of the five lens elements of the photographing lens assembly, each of at least three of the five lens elements of the photographing lens assembly has an Abbe number smaller than 30, and an absolute value of a curvature radius of an object-side surface of the second lens element is larger than an absolute value of a curvature radius of an image-side surface of the second lens element;
• wherein a maximum image height of the photographing lens assembly is ImgH, a focal length of the photographing lens assembly is f, an axial distance between an image-side surface of the fifth lens element and an image surface is BL, an axial distance between an object-side surface of the first lens element and the image-side surface of the fifth lens element is TD, and the following conditions are satisfied:
• 0.10<ImgH/f<0.35;
• and
• 0.65<BL/TD<2.60.

A photographing lens assembly comprising five lens elements, the five lens elements being, in order from an object side to an image side:

• a first lens element, a second lens element, a third lens element, a fourth lens element, and a fifth lens element;
• wherein the first lens element has positive refractive power, the third lens element has an image-side surface being concave in a paraxial region thereof, at least one surface of the five lens elements of the photographing lens assembly has at least one inflection point, a central thickness of the first lens element is the maximum among all central thicknesses of the five lens elements of the photographing lens assembly, an absolute value of a curvature radius of an object-side surface of the second lens element is larger than an absolute value of a curvature radius of an image-side surface of the second lens element, and an absolute value of a curvature radius of an image-side surface of the fourth lens element is larger than an absolute value of a curvature radius of an object-side surface of the third lens element;
• wherein a maximum image height of the photographing lens assembly is ImgH, a focal length of the photographing lens assembly is f, an axial distance between an image-side surface of the fifth lens element and an image surface is BL, an axial distance between an object-side surface of the first lens element and the image-side surface of the fifth lens element is TD, and the following conditions are satisfied:
• 0.10<ImgH/f<0.35;
• and
• 0.65<BL/TD<2.60.

A photographing lens assembly comprising five lens elements, the five lens elements being, in order from an object side to an image side:

• a first lens element, a second lens element, a third lens element, a fourth lens element, and a fifth lens element;
• wherein the first lens element has positive refractive power, the third lens element has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, at least one surface of the five lens elements of the photographing lens assembly has at least one inflection point, a central thickness of the first lens element is the maximum among all central thicknesses of the five lens elements of the photographing lens assembly, and an absolute value of a curvature radius of an object-side surface of the second lens element is larger than an absolute value of a curvature radius of an image-side surface of the second lens element;
• wherein a maximum image height of the photographing lens assembly is ImgH, a focal length of the photographing lens assembly is f, an axial distance between an image-side surface of the fifth lens element and an image surface is BL, an axial distance between an object-side surface of the first lens element and the image-side surface of the fifth lens element is TD, and the following conditions are satisfied:
• 0.10<ImgH/f<0.35;
• and
• 0.65<BL/TD≤1.59.