Infrared lights turn on when the illumination intensity falls below the threshold, and turn off when the illumination rises above the threshold. Consider the scenario where illumination is slightly below the threshold: the photosensitive component detects illumination marginally below the threshold and triggers the infrared lights to turn on. Once the infrared lights are on, reflected infrared light raises the detected illumination above the threshold, which in turn switches the infrared lights off. This causes the detected illumination to drop again and activates the infrared lights once more. This cycle repeats continuously and results in image flickering. Today, the editorial team of Kaimorui shares solutions to resolve flickering issues of infrared cameras under dim‑light conditions.

Below are the solutions for infrared camera flickering in dim environments:

1. Adjust the threshold Threshold values vary even among units of the same product model due to component dispersion. Replacing the device may resolve the problem. You can also obtain products with custom‑designed threshold values from the manufacturer.
2. Modify the environment Adjust illumination intensity, or slightly alter the mounting angle of the infrared waterproof camera. Minor adjustments of the detector’s orientation (upwards, downwards, leftwards or rightwards) can significantly change the detected illumination, shifting it away from the threshold range and eliminating flickering.
3. Adopt high‑quality low‑illumination camera chips equipped with backlight compensation and anti‑glare functions; specialized IR lenses are particularly recommended.
4. Check whether the cut‑off filter is installed on the photosensitive resistor of the infrared lamp board.
5. Flickering may occur when people or nearby objects reflect infrared light, leading to fluctuating detected illumination. This often happens during demonstrations and testing, or when the camera is mounted low and obstructed by nearby objects at close range.

That concludes our introduction to relevant troubleshooting methods. Should you have any further questions, please feel free to consult our staff. To reiterate: reflections of infrared light from people or objects near the infrared camera will cause continuous fluctuations in detected illumination and trigger flickering.