US Patent 9329078 Sensor module for automatic guided vehicles

A sensor module for a vehicle includes a sensor unit enclosed in a housing. The sensor unit has an active end which emits or receives said radiation beam. The housing has a removable cover, a back wall for mounting to the vehicle, a bottom wall, a first end wall and a second end wall spaced apart from the first end wall. The radiation beam is directed through an opening in the first end wall. The active end is internal to the housing and spaced apart internally from the first end wall. A hollow sleeve is received by the opening, and a portion of the sleeve receives at least a portion of the sensor unit. The active end of the sensor unit is inside the sleeve and spaced apart from an end of the sleeve.