Mullard has been engaged in the development and manufacture of semiconductor infrared detectors since the late 1940s and is currently the largest manufacturer of these devices outside the U.S.A. detectors covering the spectrum from the near infrared to the milimetre region are available. Currently-available detectors include lead sulphide, indium antimonide (uncooled or cryogenically cooled), mercury cadmium telluride (thermoelectrically or cryogenically cooled), and pyroelectric types. Table 1 shows the range of Standard devices. In addition to these, more complex devices including arrays can be supplied custom-built. For further information, contact Mullard Limited.

The more important applications of infrared detectors include:

Thermal imaging imaring devices (military, industrial, medical),spectroscopic and radiometric instruments including gas analysers, process control equipment, hot axle box detectors, etc.

Fire alarm and flame proving systems, intruder detectors.