What Is IR Video Camera?

If you’re interested in surveillance technology, you’ve probably heard of an IR video camera. But what exactly is it?

What Is an IR Video Camera?

An IR (infrared) video camera is a type of security camera that uses infrared technology to capture footage in low-light or complete darkness. Unlike traditional cameras that rely on visible light to produce images, an IR camera emits and detects infrared radiation. This allows it to “see” objects that are otherwise invisible to the naked eye.

How Does an IR Video Camera Work?

An IR camera contains a special sensor that can detect infrared light. When the sensor detects this type of light, it produces an electrical signal that is then processed by the camera’s image processor. The processor then creates an image using the information received from the sensor.

Because infrared radiation has a longer wavelength than visible light, it can pass through certain materials that visible light cannot penetrate. For example, if you’re using an IR camera to monitor a room through a window, the camera will be able to see inside the room even if the lights are turned off and the window blinds are closed.

Benefits of Using an IR Video Camera

There are several benefits to using an IR video camera for surveillance purposes:

  • Improved Night Vision: An IR camera can capture clear footage even in complete darkness.
  • Better Discretion: Because they don’t rely on visible light, IR cameras can capture footage without alerting potential intruders or subjects.
  • Cost-Effective: Compared to other types of night vision technology, such as thermal imaging cameras, IR cameras are relatively affordable.

Types of IR Video Cameras

There are two main types of IR video cameras:

  • Passive Infrared (PIR) Cameras: PIR cameras detect changes in temperature and movement within their field of view. When motion is detected, the camera is triggered to start recording.
  • Active Infrared (AIR) Cameras: AIR cameras emit infrared radiation and capture the reflected radiation to create an image. They can produce clearer images than PIR cameras, but they’re also more expensive.


IR video cameras are an essential tool for surveillance in low-light or dark environments. They offer improved night vision, better discretion, and affordability compared to other types of night vision technology. Knowing the different types of IR video cameras available can help you choose the best one for your specific needs.