CPC G03B 17/12 (2013.01) [G02B 7/025 (2013.01); H04N 23/55 (2023.01)] | 10 Claims |
1. An imaging lens assembly, comprising:
a plurality of plastic lens elements;
a plastic lens barrel comprising:
a plate portion having a central hole, and an optical axis of the imaging lens assembly passing through the central hole;
a tube portion extended from the plate portion which is parallel with the optical axis and defining an inner space, and the plastic lens elements disposed in the inner space;
a retaining element for fixing the plastic lens elements in the inner space;
a glue material disposed between one of the plastic lens elements and the tube portion of the plastic lens barrel, and surrounding the one of the plastic lens elements; and
a first void structure extended from the central hole to the tube portion;
wherein the tube portion comprises a plurality of inner annular surfaces, the inner annular surfaces corresponds to the plastic lens elements, respectively, the glue material is disposed between an outer diameter surface of the one of the plastic lens elements and each of the inner annular surfaces corresponding to the plastic lens elements, the plastic lens elements comprise a first lens element, and the first lens element is physically contacted with the plate portion of the plastic lens barrel;
wherein the first void structure is for maintaining an air gap between the first lens element and the plate portion, a thickness of the air gap is d, and the following condition is satisfied:
0.5 um<d<40 um.
|