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).
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 10e-10 AR
NIST Traceable
Calibrated Wavelength Range: | 380-1100nm |
Data Interval: | 5nm |
Output, Nominal | Radiance of Diffuser 2.5 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 Diffuser 2398 cd/m2 700 fL(π-1cd/ft2) Luminance with ANVIS Filter 488 cd/m2 140 fL(π-1cd/ft2) Luminance with ANVIS Filter and Low Level Aperture 6.6 cd/m2 1.9 fL(π-1cd/ft2) NVIS "A" Radiance with AN-VIS Filter and Low Level Aper-ture 450 x 10-10 NVIS "A" Radiance |
Correlated Color Tempera-ture: | 2856±25K |
Uniformity of Diffuser: | ±3% over 65 mm |
Output Uncertainty With Respect to NIST Standards of Irradiance: | ±2.5% |
Size: | 203H*197L*216W mm 2.8kg |
