Posted to News on 19th Feb 2008, 11:19
Low-cost systems for responsivity characterisation
For calibration of cameras, displays, remote sensing devices, telespectroradiometers and imaging radiometers, Labsphere's USS-800 series uniform source systems are claimed to provide unmatched application flexibility and upgrade potential. Available in continuous (USS-800C) or stepped (USS-800S) output models, Labsphere's systems are a low-cost product for responsivity characterisation in research, quality control and process engineering settings.
Systems are built on an 8-inch diameter integrating sphere coated with Labsphere's proprietary Spectraflect. This highly reflective diffuse coating delivers exception spatial integration exceeding 98 per cent. The 2-inch exit port is suitable for most portable imaging systems and arrays, with optional Spectraflect coated accessories to reduce port size as dictated by the application. A broad range of light sources offer several levels of radiance performance; current regulated DC power supply ensures lamp consistency for reproducible results. Exit port luminance is controlled and monitored with Labsphere's SC 6000 radiometer. USS-800 systems' calibrations are traceable to the National Institute of Standards and Technology (NIST).
The fixed radiance output of the USS-800S is suitable for uniform illumination of devices under test or to source a non-imaging optical train, with stepped radiance outputs of 70,500, 31,000 or 3000cd/m2. For greater flexibility, the USS-800C provides adjustable continuous spectral radiance and irradiance with luminance levels ranging from 0 to 9800, 13,500 or 24,000cd/m2. This configuration is most often used to characterise the linearity of non-imaging (CCD array) and imaging (camera) systems.
