Imaging lens assembly, camera module, electronic device and external adjusting jig for manufacturing same imaging lens assembly

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

• a plastic barrel comprising a first channel and a second channel, wherein the second channel is an opening on the plastic barrel and extended along a direction surrounding the optical axis;
• a lens set disposed in the plastic barrel and comprising at least one adjustable lens element, wherein an outer diameter surface of the adjustable lens element comprises a plurality of axial rotation structures, each of the axial rotation structures is in a protruding strip shape and extended along a direction parallel to the optical axis, and at least one of the axial rotation structures is disposed correspondingly to the second channel of the plastic barrel and exposed;
• and
• a retaining element disposed in the plastic barrel and comprising an anti-releasing structure, which is disposed correspondingly to the first channel of the plastic barrel to avoid the lens set being released from the plastic barrel.