a plastic carrier, comprising:

an inner portion, wherein an inner space is defined by the inner portion, and the inner portion comprises, from an object side to an image side, an object-side opening, at least one inner annular surface and an image-side opening; and

an outer portion comprising at least one mounting structure;

an imaging lens assembly disposed in the inner space of the plastic carrier, and comprising a plurality of lens elements and a second optical axis;

a reflective element for folding an image light by a reflective surface of the reflective element into the imaging lens assembly, wherein the reflective element comprises a first optical axis, and the first optical axis is folded into the second optical axis via the reflective surface; and

a plurality of auto-focusing elements comprising at least two magnets and at least one wiring element, wherein the auto-focusing elements are for moving the plastic carrier along the second optical axis of the imaging lens assembly, and the at least two magnets are mounted on the at least one mounting structure of the outer portion;

wherein, the object-side opening is closer to the reflective element than the image-side opening thereto, the at least two magnets are respectively disposed on two sides of one plane formed by the first optical axis and the second optical axis;

wherein, the inner portion of the plastic carrier and the at least one mounting structure of the outer portion are integrally formed into a black plastic article via an injection molding;

wherein, a number of the at least one inner annular surface is at least three which correspond to the lens elements, respectively.