Imaging lens module and electronic device

An imaging lens module, comprising:

• a plastic barrel and an optical lens assembly, wherein the optical lens assembly is disposed in the plastic barrel and comprises a plurality of lens elements, and the plastic barrel is for holding at least one lens element and comprises:
• an object-end portion, comprising:
• an object-end hole;
• an image-end portion;
• an inner tube portion connecting the object-end portion and the image-end portion, and comprising:
• a plurality of inclined surfaces, wherein each of the inclined surfaces has an angle with a central axis of the plastic barrel;
• and
• a plurality of protrusions disposed on the object-end portion, wherein the protrusions are regularly arranged around the object-end hole of the plastic barrel, each of the protrusions is strip-shaped and extends away from the object-end hole, and each of the protrusions does not have contact with the at least one lens element;
• wherein the protrusions and the plastic barrel are formed integrally, and a number of the protrusions is greater than or equal to 80, and smaller than or equal to 800,
• wherein a width of each of the protrusions in a circumferential direction of the plastic barrel is w, and the following condition is satisfied:
• 0.1 mm<w<0.05 mm.