IMAGING LENS ASSEMBLY, IMAGING LENS ASSEMBLY MODULE, CAMERA MODULE AND ELECTRONIC DEVICE

An imaging lens assembly has an optical axis and includes at least one lens element. The at least one lens element includes an optical effective region and a peripheral portion. The peripheral portion includes an object-side surface, an image-side surface, a peripheral surface, an annular marking structure and at least one arc portion. The object-side surface faces towards an object side. The image-side surface faces towards an image side and corresponds to the object-side surface. The peripheral surface connects the object-side surface and the image-side surface. The annular marking structure is disposed on one of the object-side surface and the image-side surface, and the annular marking structure is an annular tip-ended protruding structure and surrounds the optical axis. The arc portion is disposed on the other one of the object-side surface and the image-side surface, and the arc portion is an annular protruding arc.