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How to Make an Infrared Spotlight

Infrared lighting, or IR, can't be seen by the human eye, but can be recognized by heat detection devices. Infrared spotlights are used to generate a mass amount of IR lighting in areas where there may not be any ambient light. They're especially useful in areas where surveillance cameras don't have enough light around them to capture an image. The IR spotlight emits a ray of IR light that makes the area more visible.

Things You'll Need

Soldering iron
Wiring
IR LED lights
Resistors
PC Board

Instructions

- 1
  Install the LED lights into the circular-shaped PC board to shape a spotlight.
- 2
  Place one resistor for every set of five to six lights behind the PC board, using the soldering iron to connect the components together.
- 3
  Wire the resistors of the PC board, which you will then route to the spotlight's power supply. If you are using a battery, you can connect the power wires to the battery's terminals, whereas a DC-based power supply will require some additional power supply electronics work.

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