Abstract: A light-shielding member, a camera module, and an electronic device are provided. The light-shielding member includes a light-shielding body and a sawtooth structure. The light-shielding body has a first end surface and a second end surface opposite to the first end surface, and the light-shielding body defines a light-transmitting hole extending through the first end surface and the second end surface. The sawtooth structure is disposed on a wall of the light-transmitting hole, and a cross-section of the sawtooth structure taken along a direction perpendicular to a thickness direction of the light-shielding member is a sawtooth cross-section. The sawtooth cross-section has alternating peaks and valleys disposed in a circumferential direction of the light-transmitting hole. The sawtooth cross-section has a first sawtooth edge and a second sawtooth edge between two adjacent peaks, and an extending direction of the first sawtooth edge is directed to a center of the light-transmitting hole.

Abstract: A low-reflection structure, a lens barrel, and an electronic device are provided. The low-reflection structure includes a light-transmission region and a light-extinction surface arranged around a circumference side of the light-transmission region. Multiple light-extinction groups are disposed at the light-extinction surface, and the multiple light-extinction groups are arranged circumferentially around the light-transmission region. Each light-extinction group has multiple light-extinction structures, and the multiple light-extinction structures of each light-extinction group are all arranged in a radial direction of the light-transmission region.

Abstract: A lens structure, comprising: a lens barrel having a hollow structure, comprising an object side end face and an image side end face; a lens group, comprising multiple lenses arranged in the lens barrel, the multiple lenses being sequentially arranged from the image side end face to the object side end face, the lens located on an end of the lens group and close to the object side end face being a first lens, the first lens comprising a first optical portion and a first mounting portion connected together, the first mounting portion being on the first optical portion; a light shielding sheet, separated from the lens barrel, arranged on the object side end face, and extending to an object side face of the first mounting portion, an object side face of the first optical portion being exposed from an object side face of the light shielding sheet.