Imaging lens assembly, image capturing apparatus and electronic device

An imaging lens assembly, having an optical axis, and comprising:

• a plurality of optical elements arranged along the optical axis, wherein the optical elements comprise a light blocking sheet, and the light blocking sheet comprises:
• a through hole surface surrounding the optical axis;
• a first surface connected to and surrounding the through hole surface;
• a second surface connected to and surrounding the through hole surface, and the first surface and the second surface relatively disposed;
• a peripheral surface connected to the first surface and the second surface, and the peripheral surface farther from the optical axis than the through hole surface from the optical axis;
• and
• a plurality of basin structures arranged in interval and around the optical axis, each of the basin structures caved in from the first surface to the second surface, and each of the basin structures protruding on the second surface;
• wherein on a direction passing through each of the basin structures and vertical to the optical axis, a nearest distance between each of the basin structures and the optical axis is Dn, a farthest distance between each of the basin structures and the optical axis is Df, a distance between the through hole surface and the optical axis is r, a distance between the peripheral surface and the optical axis is R, and the following condition is satisfied:
• 0.2≤(Df−Dn)/(R−r)≤0.98.