ICR (Infrared Cut Removal) cut filter, also known simply as an IR cut filter, is a mechanism used in video surveillance IP cameras to switch between day and night modes to enhance image quality. Here’s a breakdown of how it works and its significance:

  • Day Mode: During the day, the ICR cut filter blocks infrared (IR) light. This is because IR light can cause color distortion in the captured images. By blocking IR light, the video surveillance IP cameras capture true-to-life colors and clear details under natural lighting conditions.
  • Night Mode: At night or in low-light conditions, the ICR cut filter is removed, allowing the camera to utilize IR light. Many security cameras are equipped with IR LEDs that illuminate the scene with infrared light, which is invisible to the human eye but can be detected by the camera’s sensor. This allows the camera to capture clear black-and-white images in darkness.

How ICR Cut Works?

  • Mechanism: The ICR cut filter is typically a physical filter placed in front of the camera lens. It can be mechanically shifted in and out of place based on the lighting conditions.
  • Automatic Switching: Modern security cameras often include a sensor that detects ambient light levels. When the light level drops below a certain threshold, the camera automatically switches to night mode, removing the ICR cut filter. Conversely, when the light level increases, the camera reinstates the ICR cut filter to switch back to day mode.

Advantages of ICR Cut Filter

  • Improved Daytime Image Quality: By blocking IR light during the day, the IP CCTV camera produces more accurate and vibrant color images.
  • Enhanced Night Vision: Removing the IR cut filter at night allows the camera to capture clearer images in low-light conditions by making use of IR illumination.
  • Automatic Operation: The automatic switching feature ensures that the camera adapts to changing lighting conditions without manual intervention.


ICR cut filters are widely used in various security and surveillance applications, including:

  • Home Security: Ensuring surveillance camera remote viewing is clear both day and night
  • Commercial Surveillance: Protecting businesses with consistent and reliable video surveillance around the clock.
  • Public Safety: Enhancing security in public areas such as streets, parks, and transportation hubs.

In summary, the ICR cut filter is a crucial component in video surveillance IP cameras, enabling them to provide high-quality surveillance footage in both daylight and nighttime conditions.

VIKYLIN is a wholesale surveillance cameras supplier, If you are interested in 4k surveillance cameras, also pls feel free to contact us.