lighting, aircraft, night vision imaging system - General Dynamics ...

MIL-STD-3009
5.7.12.2 Secondary lighting radiance measurements.
The appropriate drive condition shall be applied to the test light to illuminate the
reflectance standard such that the luminance requirement of TABLE III is met at a
distance of 12 inches. The test light shall be oriented perpendicular to the reflectance
standard. The spectroradiometer shall be set up such that the reflectance standard is
at a 45° angle with the line of sight of the spectroradiometer. The spectral radiance of
the reflectance standard shall be measured. The corrected spectral radiance shall then
be calculated using formula 12 and the NVIS radiance shall be calculated using the
corrected spectral radiance and the formulas in 5.7.12.1.
5.7.12.3 Illuminated control radiance measurements.
Inspection shall be in accordance with 5.7.12.1.
5.7.12.4 Compartment lighting radiance measurements.
The NVIS radiance inspection for compartment lighting shall be the same as for
secondary lighting (5.7.12.2) except that the distance between the test light and the
reflectance standard shall be adjusted to be equivalent to the distance at which the
lighting component will be used when installed in an aircraft.
5.7.12.5 Utility, work, map, and inspection lighting radiance measurements.
Inspection shall be the same as for secondary lighting (5.7.12.2).
5.7.12.6 Caution and advisory light radiance measurements.
Inspection shall be in accordance with 5.7.12.1.
5.7.12.7 Jump light radiance measurements.
Inspection shall be in accordance with 5.7.12.1.
5.7.12.8 Signal indicator radiance measurements.
Inspection shall be in accordance with 5.7.12.1.
5.7.12.9 Electronic and electro-optical display radiance measurements.
Inspection shall be in accordance with 5.7.12.1. The acquiring activity shall specify the
number and type of colors or composite colors that shall be measured. The
spectroradiometer shall be placed so that as much of the display as reasonably
possible is within the spectroradiometer test field.
5.7.12.10 HUD system radiance measurements.
Inspection shall be in accordance with 5.7.12.1 and as stated herein. If the display is
unable to generate the luminance level specified in TABLE III, NVIS radiance shall be
measured at the display’s maximum luminance level and scaled to the specified
luminance level.
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