A vehicle may include one or more object detection sensors such as Light Detection and Ranging (LIDAR) sensors, cameras, etc., to detect objects, e.g., in an area outside the vehicle. A sensor for detecting objects outside a vehicle may be mounted to a vehicle exterior. For example, a sensor may be mounted to a vehicle roof, pillar, etc. Alignment of such sensors relative to the vehicle aids in detecting a position of detected objects relative to the vehicle. The sensors may be part of a sensor assembly. Testing of various sensors, e.g., types of sensors, and various types of sensor assembly components, e.g., types of lenses, aids in optimizing performance of the sensor assembly.