In today’s security surveillance industry, infrared cameras, also known as night‑vision infrared cameras, are widely deployed. Boasting prominent advantages such as long night‑vision distance, high concealment and stable performance, they dominate the probe‑type surveillance camera market. What points should be noted during the operation of infrared cameras? This article gives a brief introduction.

Precautions for Using Infrared Cameras

1. Matching infrared lamps with a wide viewing angle to lenses with a narrow viewing angle will result in light waste. Moreover, a larger emission angle of the infrared lamp does not guarantee better image quality.
2. Fog and frost form when saturated water vapor in the air condenses upon cooling; frost or fog will develop depending on how cold the environment is. For explosion‑proof infrared cameras, especially outdoor models, fog or frost often builds up on the protective housing window glass due to seasonal shifts, day‑night temperature differences, rain, snow and other weather conditions. This blurs the camera’s view and directly impairs surveillance performance.
3. Visible light and infrared light have different wavelengths, so their imaging focal points do not fall on the same plane. This causes a common defect: sharp images under visible daylight but blurry footage under infrared night‑time illumination, or clear night‑time infrared images paired with blurry daytime visible‑light images.
4. All black‑and‑white cameras are sensitive to infrared light. For color cameras, infrared rays act as stray light under visible‑light conditions, degrading resolution and color reproduction. The filter fitted to color cameras functions to block infrared rays from participating in image formation.

Above are the shared precautions for infrared camera operation. Whenever possible, avoid mounting infrared lamps together with the camera. If lighting conditions in the monitored area sit right at the trigger threshold for infrared lamp activation and the camera’s color‑to‑black‑and‑white switchover, the camera will toggle frequently between color and black‑and‑white modes. Increasing the camera’s switchover delay can stop the frequent mode switching, yet it sacrifices response speed, making this solution unsuitable for sites requiring high real‑time surveillance performance.