Wilbrecht LEDCO’s new Night Vision Imaging System (NVIS) compatible LEDs are designed for avionics applications that require night vision compatibility. Available in green, yellow, white and red in both 3mm and 5mm sizes, these specially filtered LEDs allow the cockpit display to be visible to the unaided eye, as well as fully night vision goggle (NVG) compatible per MIL-STD-3009 and MIL-L-85762A.
Military personnel using night vision goggles must be able to read illuminated displays without those displays interfering with the performance of the goggles. Additionally, the displays must also be decipherable to those not using night vision. Displays illuminated with unfiltered LEDs can interfere with night vision goggles since they can emit significant energy in the infrared region of the spectrum. Excess infrared radiation can cause night vision goggles to “bloom” (halo-like glow around the displays) and create ghosting images (IR reflections from the cockpit surface).
The rugged indicators are environmentally sealed to IP66, and they are suitable for a variety of military applications, including aircraft avionics systems, communications equipment and battlefield hardware. Used as a direct replacement for incandescent lamps, the LEDs ensure minimal heat dissipation and high reliability for critical aerospace applications.
Available in nickel plated or black matte housings, the Night Vision Imaging System indicators are compliant per MIL-L-85762A and MILSTD-3009. The NVIS compatible indi ca tors are available in four NVIS LED color ranges: NVIS Green A, NVIS Green B, NVIS Yellow and NVIS Red.
Using a provided hex nut and gasket for a tight panel seal, the CR/BR series front mounts into a .312" (7.93 mm) hole, and the CRM series rear mounts into a .315" (8.00 mm) hole. Straight pin and wire lead terminations are available on both series. Custom options include internal resistors, connectors, custom wire lengths and MIL-Spec wire, including MIL-W-22759.
For additional information, visit Wilbrecht LEDCO at http://info.hotims.com/40431-304 .