A lens module, comprising:
- a lens barrel;
- and
- a lens group received in the lens barrel,
- wherein the lens barrel comprises a first barrel wall extending in a horizontal direction and a section barrel wall extending from the first barrel wall while being bent, the first barrel wall comprising a first surface close to an object side and a second surface close to an image side,
- the lens group comprises a first lens and a second lens that match each other from the object side to the image side, the first lens being a glass lens, the second lens being a plastic lens, and the first lens and the second lens each comprising an optical portion and a peripheral portion surrounding the optical portion,
- wherein the second surface of the first barrel wall comprises:
- a first planar surface horizontally extending from a joint between the first barrel wall and the second barrel wall towards an optical axis;
- a first oblique surface obliquely extending from the first planar surface towards the optical axis and towards the image side;
- and
- a second planar surface horizontally extending from the first oblique surface towards the optical axis,
- wherein an object side surface of the peripheral portion of the first lens comprises:
- a third planar surface horizontally extending from an outer edge of the first lens towards the optical axis, the third planar surface being fitted to the first planar surface;
- a second oblique surface obliquely extending from the third planar surface towards the optical axis and towards the image side, the second oblique surface being attached to the first oblique surface;
- and
- a fourth planar surface horizontally extending from the second oblique surface towards the optical axis,
- wherein an image side surface of the peripheral portion of the first lens comprises:
- a fifth planar surface horizontally extending from the outer edge of the first lens towards the optical axis;
- a third oblique surface obliquely extending from the fifth planar surface towards the optical axis and towards the image side;
- and
- a sixth planar surface horizontally extending from the third oblique surface towards the optical axis,
- wherein the object side surface of the second lens comprises:
- a seventh planar surface attached to the fifth planar surface;
- a fourth oblique surface obliquely extending from the seventh planar surface towards the optical axis and towards the image side;
- and
- an eighth planar surface horizontally extending from the fourth oblique surface towards the optical axis, the fourth oblique surface being spaced apart from the third oblique surface.