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IL1710 Research Photometer System
Meter: IL1700 Research RadiometerDetector: SED033/Y/W.
Dynamic Range: 5 x 10-4 to 1 x 10+6 lux (10-5 to 10+5 fc).
Spectral Range: CIE Photopic (F1' = 2.5)
IL1410 Photometer System
Meter: IL1400A Radiometer / PhotometerDetector: SCL110
Dynamic Range: 200 mlux to 700 klux (10-2 to 10+5 fc)
Spectral Range: CIE Photopic
The new Y filter in the IL1410 & IL1710 Photometer Systems was redesigned using proprietary composite filter design software to match the CIE Photopic curve within 1% total area error. We perform absolute transmission scans on every melt of glass we purchase, recalculating the thicknesses required for each absorptive layer. This ensures an accurate match despite subtle variations between melts.
The IL1710 system relies on a W quartz diffuser to provide accurate cosine correction. The IL1410 system integrates the silicon photodiode, Y filter, and a flashed opal diffuser in a low profile package that provides an excellent cosine response in an easy to handle probe. Both systems can measure the extremes of photometric illuminance, from starlight to sunlight, with microprocessor controlled autoranging.
Illuminance is defined as the amount of visible light per unit area falling on a surface. NIST traceable calibrations are available in lux (lumens/m2) and foot-candles (lumens/ft2).
International Light offers a number of photometric detectors with slightly different features, such as luminance optics or scotopic filtering. Consult a sales engineer for further assistance.