Patent ID: 8898852

Claim:
An optical monitoring device window clearing apparatus comprising: a housing having at least one window; an air burst nozzle positioned on top of said housing and aimed downward at said window; a lighting device positioned within said housing such that light is directed outward from said window to illuminate a monitoring area; a compressed air source; an air knife nozzle positioned proximate to said fixed position air burst nozzle; an air control solenoid operably connected to said air burst nozzle and said compressed air source, wherein said air control solenoid regulates flow of compressed air in bursts to said air burst nozzle in order to clear particulates from said at least one window; tubing connected to said air burst nozzle and to a pressure switch, wherein said tubing is also connected to said air control solenoid; and a support box connected to said housing and said air control solenoid, said support box comprising a magnetic valve for controlling said air control solenoid and a programmable timer module for controlling said magnetic valve.