A camera module according to an embodiment of the present invention comprises: a substrate; a light source disposed on the substrate to output light; a first optical member for, when the light is input, diffusing and outputting the light; and a second optical member including a first liquid and a second liquid having a different refractive index from the first liquid, and when the diffused light is input, refracting and outputting the diffused light according to an interface which is formed between the first liquid and the second liquid and is changed according to applied voltage.