Imaging optical lens assembly, image capturing unit and electronic device

An imaging optical lens assembly comprising seven lens elements, and the seven 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, a fifth lens element, a sixth lens element and a seventh lens element;

• wherein there are a total of seven lens elements in the imaging optical lens assembly, the third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof, the fifth lens element has an object-side surface being concave in a paraxial region thereof, the sixth lens element with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, and the image-side surface of the sixth lens element has at least one critical point in an off-axis region thereof;
• wherein a focal length of the imaging optical lens assembly is f, a focal length of the second lens element is f2, a focal length of the third lens element is f3, a curvature radius of an object-side surface of the first lens element is R1, a curvature radius of the object-side surface of the sixth lens element is R11, a curvature radius of the image-side surface of the sixth lens element is R12, an axial distance between the object-side surface of the first lens element and an image surface is TL, a maximum image height of the imaging optical lens assembly is ImgH, and the following conditions are satisfied:
• −0.60<f/R1<0.50;
• f3/f2<1.60;
• (|R11|+|R12|)/f≤1.92;
• and
• TL/ImgH<1.75.

An imaging optical lens assembly comprising seven lens elements, and the seven 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, a fifth lens element, a sixth lens element and a seventh lens element;

• wherein there are a total of seven lens elements in the imaging optical lens assembly, the third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof, the fifth lens element has an object-side surface being concave in a paraxial region thereof, the sixth lens element with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, the object-side surface of the sixth lens element has at least one critical point in an off-axis region thereof, and the image-side surface of the sixth lens element has at least one critical point in an off-axis region thereof;
• wherein a focal length of the imaging optical lens assembly is f, a focal length of the third lens element is f3, a focal length of the fifth lens element is f5, a curvature radius of an object-side surface of the first lens element is R1, an Abbe number of the sixth lens element is V6, an Abbe number of the seventh lens element is V7, an axial distance between the object-side surface of the first lens element and an image surface is TL, a maximum image height of the imaging optical lens assembly is ImgH, and the following conditions are satisfied:
• f/R1<0.50;
• f5/f3<1.20;
• V7/V6<2.0;
• and
• TL/ImgH<1.75.

An imaging optical lens assembly comprising seven lens elements, and the seven 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, a fifth lens element, a sixth lens element and a seventh lens element;

• wherein there are a total of seven lens elements in the imaging optical lens assembly, the sixth lens element with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, the image-side surface of the sixth lens element has at least one critical point in an off-axis region thereof, and an object-side surface and an image-side surface of at least one of the seven lens elements comprise at least one freeform surface;
• wherein an Abbe number of the sixth lens element is V6, an Abbe number of the seventh lens element is V7, a maximum field of view of the imaging optical lens assembly is FOV, and the following conditions are satisfied:
• V7/V6<2.50;
• and
• 100 [deg.]<FOV<175 [deg.].