Winter, with its longer nights, is the perfect time to save on a pair of night vision goggles and some companies have continued the Black Friday fever into December. The Bushnell Equinox X650 is $ ...

Night vision goggles are categorized based on the number of lenses, including single-lens, dual-lens, and four-lens models.

lens 38 mm in diameter with a 50 mm focal length. Add a printed enclosure, and the result is a monocular night vision display. Do it three more times and arrange them around one’s eyeballs ...