| CPC G02B 7/021 (2013.01) [G02B 13/18 (2013.01)] | 16 Claims |

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1. A lens module, comprising:
a lens barrel comprising a first lens chamber and a second lens chamber arranged along an optical axis, wherein an inner edge surface of the lens barrel has an extension portion, the extension portion is located between the first lens chamber and the second lens chamber and defines a light-passing hole, and the first lens chamber communicates with the second lens chamber via the light-passing hole; and
a first optical lens disposed in the first lens chamber and having a first optical zone surrounding the optical axis and a first non-optical zone surrounding an outside of the first optical zone, wherein the first non-optical zone comprises a first protrusion, the first protrusion is disposed in the light-passing hole, and the first protrusion is in contact with the extension portion of the lens barrel;
wherein the first protrusion is physically connected to the inner surface of the light-passing hole to fix the first optical lens, and the position of the first protrusion physically connected to the light-passing hole is located between the first lens chamber and the second lens chamber defined by the extension portion of the lens barrel.
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