infrared night vision camera used Infrared light source（similar  light source from ir led strip）, is the key component of infrared camera,
this element is related to the service time and the distance
of night vision camera . Reportedly, there are mainly two categories in the current market,
one is the traditional LED lamp bead, infrared light source is a traditional light source; another is  “array” infrared light source,
the principle of infrared array”, is the many luminous chip are integrated, photoelectric conversion efficiency is high than the ordinary LED, photoelectric conversion rate of ordinary LED is 10%, while the “photoelectric conversion array” infrared night vision camera rate can be up to more than 25%,in generally speaking, Infrared light source is import thing for service life and the distance from the camera, the infrared radiation power is proportional with the positive current, but in close to being the largest current rating, the temperature of the device  goes up due to current is augment, so that the light emission power decreased.Infrared lamp especially long-distance LED infrared light,  heat loss is the design and selection should pay attention to the problem.
Infrared light source to judge whether is a good product from the supplier, we use a reverse power test in single IR led, reverse current, high quality LED infrared light can be above the reverse voltage 12V, the poor quality of infrared light in the reverse voltage 5 ~ 6V will burst(broke).