Well-known，The visible light of the human eye can be seen from the wavelength from long to short.、Orange、yellow、green、green、blue、purple，Digital cameraCCDSensing all light this caused the image of the photographed image and our naked eye.。To solve this problem，Digital camera in the lens andCCDA infrared filter between adds an infrared filter between，Its role is to let the infrared light in a certain band pass，Absorb or reflect visible light and ultraviolet rays。Most infrared cameras currentLEDInfrared light-emitting secondary tube as the main material of infrared camera。
Infrared camera monitoring has the following development trends：
1、Video surveillance development outdoor，Outdoor monitoring to the night vision，The development direction of the night vision is based on infrared，This trend has become the development trend of the camera industry。巴慕达中国常见问题
2、Photoelectric、Microelectronics、Development of microcomputer and digital video technology，The security industry has been integrated with simple simulated towns.、Digitizing、Network and intelligent。
3、Laser night vision technology is one of the ways to achieve long-distance night vision monitoring，Because the laser has high brightness、Coherence、Monochromaticity、Directionality、Long lifeCCDThe degree of inductance of its wavelength is greater thanLEDThe characteristic determines that the laser can illuminate farther distance，And the light intensity is more stronger than the conventional light source.。