Infrared lamps operate under specific conditions where their radiation power is directly proportional to the forward current. However, as the current approaches the maximum rated value, the device heats up due to internal resistance, causing a decline in optical output. If the current is too low, the emitted power will be insufficient, while excessive current can shorten the lamp’s lifespan or even cause it to burn out.
Once the voltage exceeds the threshold (around 0.8V), the current increases rapidly, indicating that the operating current must be precisely controlled. Any instability can affect the reliability and performance of the infrared output. Additionally, rising ambient temperatures—often caused by the lamp's own heat—can reduce its efficiency. For long-range infrared applications, heat management becomes a critical design consideration.
To ensure optimal performance, infrared lamps require a stable constant-current power supply and efficient heat dissipation. Midway Communications' MCD, MDD, MED, and MBB series cameras are equipped with high-power infrared lamps (up to 24 units) powered by a high-current power source. These models also feature internal heat circulation systems, enabling them to achieve long-range night vision (up to 220 meters) with extended lamp life.
Red storm occurs when infrared lamps emit visible red light, which can interfere with the camera’s ability to remain discreet. To address this, Midway Communications uses AUCSITER infrared technology, which minimizes heat generation and optimizes the light angle for an effective utilization rate of over 90%. By selecting longer wavelength infrared LEDs (around 910nm), they significantly reduce the red effect, ensuring better stealth and performance.
Fog and frost on infrared camera lenses are common issues, especially in outdoor environments. They occur when moisture condenses on the glass surface due to temperature fluctuations. To prevent this, Midway Communications has implemented an advanced electronic defrosting circuit that controls humidity levels inside the housing, allowing automatic defogging and defrosting.
In rainy, snowy, or dusty conditions, the protective window of the camera can become dirty, obstructing the view. Solutions include mechanical wipers or "invisible wiper" glass, which repels water, dust, and snow. This type of glass offers a more reliable and maintenance-free option compared to traditional solutions.
Due to the high heat generated by powerful infrared lamps during operation, thermal management is essential. Without proper heat distribution, the front part of the camera housing can overheat, affecting the camera’s performance. Midway Communications addresses this with an automatic air-conditioning system using Peltier cooling technology. This system maintains the internal temperature within a safe range—between +5°C and +40°C—ensuring stable operation even in extreme conditions.
Tests show that these integrated infrared cameras can function reliably in outdoor environments ranging from -40°C to +70°C, even under direct sunlight. In addition to temperature control, the sealed design prevents dust, moisture, and corrosive gases from entering, making the camera suitable for harsh environments such as large coal mines.
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