Patent ID: 7157689
Filing Date: 2007-01-02
Classification: E05F,E05Y

Abstract:
1. An optical safety edge and control system comprising: a deformable safety edge having a first end and a second end; an optical transmitter coupled to the first end of the deformable safety edge; an optical receiver coupled to the second end of the deformable safety edge such that the optical transmitter is optically coupled to the optical receiver when the deformable safety edge is not deformed and is not optically coupled to the optical receiver when the safety edge is deformed; a control until electrically coupled to the optical transmitter and the optical receiver wherein the control unit detects signals received from the optical transmitter by the optical receiver and the power level of the optical transmitter is adjusted by the control unit; wherein the power level of the optical transmitter is adjusted to compensate for changes in signals received from the optical transmitter by the optical receiver.