Infrared scanner for forward loading infrared device (FLIR)

摘要

An infrared scanner includes an infrared energy reflecting surface rigidly fixed to a supporting shaft. The shaft is supported by jewel bearings for rotation by a motor controlled by a control circuit for imparting a scanning motion to the reflecting surface. A collar interconnects the shaft to an electrical coil which is energized by a two- directional source of power. A magnetic means includes a pair of "U" shaped members forming a housing of electromagnetic material for containing a pair of opposing magnets. The legs of the "U" shaped members support a coil pole in an air gap forming relationship with respect to the magnets. The reflecting surface support shaft supports the coil about the center pole piece and in the air gap in a free standing position with respect to the center pole piece and the magnets whereby the coil that is attached to the shaft moves through the air gap due to the interaction of the fixed magnetic field with that associated with the current flowing through the scan coil to rotate the supporting shaft and the scan mirror.