Patent ID: 6612493
Filing Date: 2003-09-02
Classification: G06K

Abstract:
An optical scanning system comprising:a scanner housing having an opening; an optical window located at said opening, said window having an interior surface; and a heater system for controlling a temperature inside said scanner housing, said heater system including: a heater housing located inside said scanner housing; a sensor located inside said heater housing for sensing the temperature inside said scanner housing; a fan located inside said heater housing for providing an airflow inside said optical scanner; a heating element located inside said heater housing for heating the flowing air provided by said fan; a control circuit located inside said heater housing for receiving an output of said sensor and for controlling operation of said fan and said heating element; and a power supply located inside said heater housing for providing electrical power to said control circuit; whereby the temperature inside said scanner housing keeps moisture from condensing on said interior surface of said optical window.