Using cheap Infrared LEDs and a cheap camera, you can build this handheld night vision monacle. Start with a viewfinder from an old camcorder, add some IR LEDs, and that’s the basis of this simple project. You can also setup the night vision viewer as an ultra-low light video surveillance system too.
10 infrared LEDs are typically enough to light up the target area. With the right filter lens, the target area could be a room or your entire backyard. Just like the laser microphone this modder built, the night vision viewfinder also comes with 21 pages of detailed instructions.