Monolithic Glass NVIS Ring Filters

Incandescent subminiature lamps typically used in integrally illuminated instruments and panels have a broad emission throughout the visible spectrum. However, the majority of the radiated energy lies in the infrared region. Filament temperatures vary over a very broad wavelength range extending from 400 nm in the visible (blue) region to 10,000 nm in the far infrared. Typical temperatures for low wattage subminiature lamps range from 1850 °K – 2275 °K.      

Lumitron monolithic NVIS glass is designed specifically for incandescent lamps. Our Monolithic glass construction NVIS ring filters and NVIS lamps (lamp/filter assemblies) offer reliable, rugged, and temperature resistant NVIS compliance in lighting applications where low wattage subminiature incandescent lamps are the preferred source of illumination. NVIS compatibility is achieved when the glass is machined with a wall thickness of 0.040” (1.0 mm).  

Lumitron monolithic glass NVIS filters and lamps are available in either a matte or polished finish.

NVG COMPATIBILITY FOR TYPE V PANELS – MIL-L-7788F

NVG COMPATIBILITY FOR AVIONICS PER MIL-L-85762A and MIL-STD-3009

Dimensions are in inches (mm) Standard tolerance is 0.005" (0,13) unless otherwise specified.

Add the three digit length designation from table A below:

For polished finish add “P” to part number (L-43130-210-180-P)

* Including aluminum cap heat sink

TABLE B