Imaging optical lens assembly, imaging apparatus and electronic device

An imaging optical lens assembly comprising five lens elements, the five lens elements being, in order from an object side to an image side along an optical path:

• a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element, each of the five lens elements has an object-side surface facing the object side and an image-side surface facing the image side:
• wherein the third lens element has negative refractive power;
• an axial distance between the object-side surface of the first lens element and an image surface is TL, a focal length of the imaging optical lens assembly is f, an Abbe number of the fourth lens element is V4, an Abbe number of the fifth lens element is V5, an axial distance between the first lens element and the second lens element is T12, an axial distance between the second lens element and the third lens element is T23, an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, an axial distance between the image-side surface of the fifth lens element and the image surface is BL, an axial distance between the object-side surface of the first lens element and the image-side surface of the fifth lens element is TD, a curvature radius of the image-side surface of the first lens element is R2, a curvature radius of the object-side surface of the second lens element is R3, and the following conditions are satisfied:
• 0.50<TL/f<1.0;
• 10.0<V4+V5<45.0;
• 0.38<T23/(T12+T34+T45);
• 0.03<BL/TD<0.50;
• and
• −7.0<(R2+R3)/(R2−R3)<2.80.

An imaging optical lens assembly comprising five lens elements, the five lens elements being, in order from an object side to an image side along an optical path:

• a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element, each of the five lens elements having an object-side surface facing the object side and an image-side surface facing the image side:
• wherein the first lens element has positive refractive power, and the third lens element has negative refractive power;
• an axial distance between the object-side surface of the first lens element and an image surface is TL, a focal length of the imaging optical lens assembly is f, an Abbe number of the fourth lens element is V4, an Abbe number of the fifth lens element is V5, an axial distance between the first lens element and the second lens element is T12, an axial distance between the second lens element and the third lens element is T23, an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, a focal length of the fourth lens element is f4, and the following conditions are satisfied:
• 0.50<TL/f<1.0;
• 10.0<V4+V5<45.0;
• 0.50<T23/(T12+T34+T45);
• and
• −2.0<f/f4<1.50.

An imaging optical lens assembly comprising five lens elements, the five lens elements being, in order from an object side to an image side along an optical path:

• a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element, each of the five lens elements having an object-side surface facing the object side and an image-side surface facing the image side:
• wherein the first lens element has positive refractive power, the third lens element has negative refractive power, and at least one of the object-side surface and the image-side surface of the third lens element is aspherical;
• at least one of the five lens elements is made of plastic;
• and there is an air gap between each of adjacent lens elements of the five lens elements;
• wherein an axial distance between the object-side surface of the first lens element and an image surface is TL, a focal length of the imaging optical lens assembly is f, an Abbe number of the fourth lens element is V4, an Abbe number of the fifth lens element is V5, an axial distance between the first lens element and the second lens element is T12, an axial distance between the second lens element and the third lens element is T23, an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, a focal length of the fourth lens element is f4, a central thickness of the fourth lens element is CT4, a central thickness of the fifth lens element is CT5, and the following conditions are satisfied:
• 0.50<TL/f<1.0;
• 10. 0<V4+V5<70.0;
• 0.75<T23/(T12+T34+T45);
• −2.0<f/f4<2.20;
• and
• 0.20<(CT4+T45)/CT5<2.50.