MIL-PRF-49052G
3.
REQUIREMENTS
3.1 Description. The Image Intensifier Assembly, 18 Millimeter Microchannel
Wafer, MX-9916/UV, referred to hereinafter as the assembly, shall have a minimum
useful photocathode diameter and phosphor screen diameter of no less than 17.5
millimeters (see 3.12.20). The assembly shall employ an S-20 photocathode with
extended red response. The assembly shall include the high voltage multiplier
and oscillator and shall be encapsulated within a hard-surface insulating sleeve
or boot and assembled into a metal housing. The assembly shall employ a
microchannel electron multiplier plate with proximity focus on the input and
output, and shall contain an input fiber optic faceplate and an output fiber
optic inverter as an integral part of the tube envelope.
3.2 Construction. The assembly shall be constructed to comply with the
performance requirements in the contract, drawing SM-D-657310 as applicable, and
as specified herein.
3.2.1
Weight.
The weight of the assembly shall not be greater than 126
grams.
3.3 First article test inspection. When specified in the contract or
purchase order, the contractor shall furnish first article test (FAT) inspection
assemblies in accordance with 4.2 (see 6.2.b).
3.4 Parts and materials. The contractor shall select parts and materials
fully capable of meeting all operational and environmental requirements specified
herein. The materials specified on the applicable drawings are recommended, but
not mandatory. Verification that the assembly meets the overall performance
requirements shall be the governing acceptance standard.
3.4.1 Phosphor screen. The phosphor screen (see 3.12.2) shall be RCA F2126
(type number 10-52) or a government approved equivalent.
3.5
Components.
3.5.1 Power supply. The power supply (see drawing SM-C-657325) shall
electrically and mechanically interface with the image intensifier module (see
drawing SM-C-657326). The power supply shall produce the required operational
characteristics when powered by a 2.0 to 3.0 volt direct current (Vdc) power
source.
3.5.1.1 Reverse polarity. The power supply shall withstand a reverse
polarity input voltage of 3.0 Vdc for at least 10 minutes. When the correct
polarity of 3.0 Vdc is applied to the power supply, the tube shall function
normally.
3.5.2
Fiber optic faceplate/inverter.
3.5.2.1 Shear distortion. Shear distortion (see 3.12.3.1) shall not exceed
25 micrometers (µm) over the display area.
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