RS-12DN Calibration Light Source

The RS-12DN is a NIST Traceable Calibration Light Source that can be used as a white light standard of spectral radiance or luminance.

The insertion of the filter/aperture assembly transforms the unit into an NVIS display simulation source approximating a green cockpit display with a designed level of near infrared output against which a spectroradiometer or radiometer can be calibrated.

The reduction of near infrared output from the tungsten-halogen lamp reduces the effects of stray light within the monochromator portion of a spectroradiometer. The RS-12DN has a three-inch exit diameter with uniformity ±3%.

Three calibrations and certificates are supplied. First, a white-light source calibration is performed from 380 to 1100 nm. Nominal luminance output is 700 footlamberts and correlated color temperature is set at 2856 K ± 25 K. The second calibration is with the filter inserted with nominal luminance output of 45 footlamberts. The third calibration is with the filter and aperture. Nominal output is 1 footlambert and 10-10 AR (Anvis Radiance).

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  • Standard of spectral radiance and luminance
  • RS-12D white-light standard without NVIS requirements
  • Correlated color temperature of 2856 K ±25 K
  • 3-inch diffuse exit diameter with ±3% uniformity
  • ANVIS output with 10-10 AR
  • NIST Traceable

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RS-12DN Calibration Light Source Specifications

Calibrated Wavelength Range380-1100 nm
Data Interval5 nm
Correlated Color Temperature (CCT)2856±25K
Uniformity of Diffuser±3% over 65 mm
Output Uncertainty with Respect to NIST Standards of Irradiance±2.5%
Radiance of Diffuser2.5 x 10-8 W/(cm2*nm*sr) at 380 nm
3.0 x 10-6 W/(cm2*nm*sr) at 550 nm
9.5 x 10-6 W/(cm2*nm*sr) at 800 nm
1.2 x 10-5 W/(cm2*nm*sr) at 1100 nm
Luminance of Diffuser2398 cd/m2
700 fL (π-1 cd/ft2)
Luminance with ANVIS Filter488 cd/m2
140 fL (π-1 cd/ft2)
Luminance with ANVIS Filter and Low Level Aperture6.6 cd/m2
1.9 fL (π-1 cd/ft2)
NVIS “A” Radiance with ANVIS Filter and Low Level Aperture450 x 10-10 NVIS “A” Radiance
SizeHeight: 203 mm (8.0 in)
Length: 197 mm (7.8 in)
Width: 216 mm (8.5 in)
Weight: 2.8 kg (6.25 lb)

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