Where bright or reflective targets need to be detected, a standard reflex system is unsuitable since the targets can reflect light back to the detector and so cause false operation. For these applications, a polarised reflex detector is ideal. This type of detector transmits visable red light and incorporates two oppositely polarising filters:
The transmitter filter only allows vertically polarised light to pass.
The receiver filter allows only horizontally polarised light to pass.
Visit the Burnand XH Ltd website for more information on Standard reflex system