To maintain constant radiant flux output, tungsten halogen lamps are used exclusively. An RS-4 Series Constant Current Power Supply is used for ultra-stable, constant-current power and monitoring with a precision shunt current measurement and comparison circuits built into the source housing.
The RS-50VF source is primarily used for generating irradiance levels at distances from 6 to 30 meters or for uniformly illuminating areas of up to 18 inches (46 cm) or more in diameter. The calibration of the source is given at a specified distance from the exit pupil. Beyond 6 meters the source has the characteristics of a point source, and approximate illuminance and irradiance levels may be generated using the inverse square law.
The RS-50VF may also be used uncalibrated to illuminate various materials of interest. The correlated color temperature of the RS-50VF source is set at CIE Illuminant A at 2856 ± 20K. The area of illumination may be varied by changing the field apertures.
NIST-traceable calibration for Luminous Intensity (cd), Illuminance (lux), and Irradiance (W/cm2
Calibrated Wavelength Range: 380-830nm
Norminal Output: Luminous intensity 2700cd
Uniformity of Illuminated Area: ±4% over 46cm
Illuminated Area at 15m: 30cm diameter, 48cm diameter
dimension:Length:127mm, Height: 310mm,Width:127mm Weight:2.7KG