Provided are a light-receiving device and lidar comprising the light-receiving device. The light-receiving device comprises: a first lens including a first lens surface for receiving light from the outside and a second lens surface for changing the path of the light received by the first lens surface and outputting the light to the outside; and a sensor on which light transmitted through the second lens surface is incident, wherein the first lens surface is a spherical surface, the second lens surface is an aspherical surface, and the focus of the first lens deviates from the sensor surface ofthe sensor.