Photometers or light meters are radiometers that include a filter and photodiode and responds based on the average human eye: the CIE 1924 luminosity function V λ. However, the light sensitive diode ...

This project uses a simple LDR that is calibrated against a reference photometer in order to build a digital lux meter. This project uses a simple LDR that is calibrated against a reference photometer ...

With its dual-wavelength sensor detector, the Spectroline AccuMAX XRP-3000 digital radiometer/photometer from Spectronics measures both ultraviolet and visible light from a wide variety of light ...

Spectronics Corporation has introduced the feature-enriched Spectroline® AccuMAX XRP-3000 digital radiometer/photometer. Westbury, New York—Spectronics Corporation has introduced the feature-enriched ...

Anyone know of a logging Light meter or direct output photometer that I could use to measure the evanescence of the phosphor of a CRT? DOesn't need to be accurate - I just need to see the envelope of ...