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MIL-L-85762 and MIL-L-85762A
(currently MIL-STD-3009)
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Redesigning crewstation lighting required definition of NVIS compatibility and verification methods. MIL-L-85762, a tri-service specification, filled his need by setting standards for aircraft interior lighting compatible with the Gen 3 Aviator's Night Vision Imaging Systems (ANVIS), also known as AN/AVS-6 (figure 7).
Figure 7: The AN/AVS-6 Aviator’s Night Vision Imaging System (ANVIS) GEN 3 Type I, Class A NVIS.
Designed for helicopter pilots, ANVIS filtering transmits red, to take full advantage of radiation reflected from foliage and optimize visibility at tree-top level. At the same time, the ANVIS minus-blue filter cuts out most of the low night-sky radiance in the 500-600 nm band (figure 8), which does not impair visibility through ANVIS, because foliage has relatively low reflectivity in this band. These goggles provide excellent peripheral vision and allow the pilot to glance below the eyepieces to view instrumentation, but do not allow red displays in the crewstation.
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