The Optikon Corporation Ltd.
Our calibrated cal-LIGHT 400 series of digital lightmeters provide accurate illuminance measurements in either foot-candles or lux. With a simple "point and click" your measurement is immediately displayed on the 10mm high screen. All our models use a silicon photodiode with photopic and cosine correction, so the meter "sees" just as the human eye sees. Every cal-LIGHT 400 is individually calibrated to NIST/NRC standards, and the certificate is provided with the meter. We have three models from which to choose. Our standard cal-LIGHT 400 and cal-LIGHT 400L look identical, but our "L" version has a back-lit display for reading very low light levels (under 3 lux). Our cal-LIGHT 400F has the sensor on the face of the unit and was originally designed for art galleries and museums to more easily measure light falling against a wall. Marketed through our US sister company, The Cooke Corporation, our cal-LIGHT 400's are used by lighting professionals world-wide. See our cal-LIGHT 400 brochure See our cal-LIGHT 400F brochure | ![]() |