Build a simple active-IR night vision device from a common black-and-white CCD camera, a handheld television and some infrared LEDs.

By their nature, CCD camera sensors are sensitive to short-wavelength infrared radiation.  You can test this by pointing any remote control at a video camera and observing the pulses of "light".

To homebrew a simple night vision device, all you need is a CCD camera hooked up to a simple video display.  A handheld television with a video input jack, like what is sold at Radio Shack, is a perfect for use as a battery operated portable display.

Make an infrared "flashlight" by stringing together surplus infrared LEDs in a series/parallel combination or use an infrared laser diode module from an old laser printer or fax machine.

Block Diagram

Notes

• Ramsey Electronics Cameras/Transmitters
• Color CCD cameras contain a filter and are not as sensitive to infrared radiation as black and white cameras.
• Ramsey Electronics IR1 infrared illuminator kit manual  (270k PDF)
• Variable intensity infrared illuminator schematic