LENS MODULE
The present disclosure provides a lens module. The lens module includes: a lens barrel including a first barrel wall having a first inner diameter, a second barrel wall having a second inner diameter and a connecting wall connecting the first barrel wall with the second barrel wall, the first inner diameter being smaller than the second inner diameter; and a set of lenses received in the lens barrel, the set of lenses including a lens surrounded by the second barrel wall. The lens includes a thinned edge portion and a light shading structure sandwiched between the thinned edge portion and the connecting wall. The lens in the lens module provided by the present disclosure reduces stray light, and thus the optical performance is improved. In a case of space limitations, a light shading plate is further provided, so as to adjust gap spacing.
1 . A lens module, comprising:
a lens barrel comprising a first barrel wall having a first inner diameter, a second barrel wall having a second inner diameter and a connecting wall connecting the first barrel wall with the second barrel wall, the first inner diameter being smaller than the second inner diameter; and
a set of lenses received in the lens barrel, the set of lenses comprising a lens surrounded by the second barrel wall,
wherein the lens comprises a thinned edge portion and a light shading structure sandwiched between the thinned edge portion and the connecting wall.
2 . The lens module according to claim 1 , wherein the thinned edge portion comprises a horizontal surface abutting against the light shading structure, and a light extinction oblique surface connected to the horizontal surface, the light extinction oblique surface extending obliquely from the horizontal surface towards an optical axis and towards an object side.
3 . The lens module as described in claim 2 , wherein the light extinction oblique surface is spaced apart from the light shading structure.
4 . The lens module as described in claim 1 , wherein the light shading structure is a light shading plate.
5 . The lens module as described in claim 1 , wherein the light shading structure comprises a light shading sheet and a light shading plate, the light shading sheet being sandwiched between the connecting wall and the light shading plate.
6 . The lens module as described in claim 5 , wherein an end of the light shading sheet close to an optical axis is closer to the optical axis than an end of the light shading plate close to the optical axis.
7 . The lens module as described in claim 1 , wherein the set of lenses further comprises a lens surrounded by the first barrel wall.