Lens module

A lens module, comprising:

• a lens barrel;
• and
• a set of lenses received in the lens barrel, the set of lenses comprising at least a first lens and a second lens arranged from an object side to an image side, the lens barrel comprising an first barrel wall defining a light through hole and a second barrel wall bent and extending from the first barrel wall, the first barrel wall comprising a first surface close to the object side and a second surface close to the image side, and the first lens comprising a first optical portion and a first peripheral portion surrounding the first optical portion,
• wherein the second surface comprises:
• a first planar surface extending horizontally towards an optical axis from a position where the first barrel wall is connected to the second barrel wall;
• a first oblique surface extending obliquely from the first planar surface towards the optical axis and towards the image side;
• and
• a second planar surface extending horizontally from the first oblique surface towards the optical axis,
• an object side surface of the first peripheral portion comprises:
• a third planar surface extending horizontally from an edge of the first peripheral portion towards the optical axis;
• a second oblique surface extending obliquely from the third planar surface towards the optical axis and towards the image side;
• and
• a fourth planar surface extending horizontally from second oblique surface towards the optical axis,
• the first planar surface fits the third planar surface, the first oblique surface fits the second oblique surface, the second planar surface is spaced apart from the fourth planar surface, and the first lens is a glass lens;
• an outer edge of the first lens is spaced apart from an inner wall surface of the second barrel wall.