This is the BPNVG, generation 2. This uses the same internal parts as the gen 1, but has a more robust, more durable case.

Internally this uses many parts in common with previous open source night vision devices as the Openscope, and the Eagle Scope. The Runcam Night Eagle 2, originally used in the 'Eagle Scope' 3d printed NVG is advertised as needing only 0.00001 lux illumination. (Lux is subjective and I do not believe this) and will function considerably better than the naked eye outdoors. If there is sufficient overhead foilage or you are indoors you will still need an IR illuminator.

The biggest advantage to the NVG is not night vision itself, but the ability to see other active night vision devices, like security cameras IR spotlights, and weapons systems or designators using IR invisible to the naked eye.

This device requires:

• Four Runcam Night Eagle 2 Pro sensors
• Four biconvex lenses, 38mm diameter with a 50mm focus distance
• Four Adafruit branded 2" Diagonal NTSC/Pal Analog screens
• M5 bolts
• 1/4-20 bolts and nuts for the mount (standard thread for nvgs)
• Generic power cord of any variety
• Generic battery pack of any variety
• PVS-14 J-arm

This means the overall cost to make this should be under $1000, including the printer.

Parts to print:

• Main Housing 2x
• Sensor Holder 4x
• Internal board mount 4x
• Internal screen mount 4x
• Gasket/Spacer 4x (flexible or hard material with sealant added)
• Lens holder 2x -Bridge

The order of operations are as follows:

1. Glue 1/4-20 nuts inside top of housing.
2. Glue screen and board to respective screen and board holders.
3. Glue holders back to back. Make necessary wire connections with enough slack for parts to fit, and test fit.
4. Glue board and screen mount inside of housing.
5. Epoxy sensors into front sensor holders.
6. Remove screen protector when dry (hard to do but possible with a finger inside).
7. Apply gasket maker or sealant to spacer, and install front sensor holder.
8. Epoxy over front wire trough with power input wire in desired position.
9. Epoxy lenses to lens holders or apply sealant.
10. Remove screws from J-arm, and remove arm and tilt sensor.
11. Install disassembled J-arm mount to dual brudge.
12. Install BPNVG units into dual bridge, with sealant on threads.
13. Plug opposite side.

The BPNVG will now be complete.

The BPNVG can be focused by rotating the lenses on the front of the sensors. The BPNVG if properly sealed, is waterproof to an undetermined depth. The BPNVG can be purged, or dessicant added through the mount holes. The BPNVG can be used with one half of the unit left or right, or the entire unit can be assembled with only one screen and sensor as a monacle with the optional single tube and lens holder for single or simple binocular use, with an overall estimated cost near $150 for the single monacle. No single part of the BPNVG is ITAR regulated and this device can be sourced from components in any part of the world. The BPNVG can be used with Short Wave Infrared that is undetectable with military standard intensifier tube based NVGs.