NIR camera is a special kind of camera that can capture information that is imperceptible to the human eye, providing an important tool for scientific research, medical treatment, military, environmental monitoring and other fields. The principle of NIR camera is not complicated, but it involves some knowledge of physics.
The working principle of NIR camera is based on the photoelectric effect. When light strikes the camera's photodiode, an electrical charge is generated. These charges can be converted into image signals, which ultimately form the images we can see. Normal cameras are mainly sensitive to visible light, but NIR cameras respond more strongly to infrared light. This is because infrared wavelengths are longer than visible light, making it easier to penetrate harsh weather conditions such as fog, haze, rain and snow, as well as being able to shoot at night.
NIR cameras are made up of the following main components: lenses, filters, photodiodes, signal processors and memory. The lens is responsible for collecting light, and filters are used to filter out unwanted light, such as visible light and ultraviolet light. The photodiode converts the collected infrared light into electrical signals, the signal processor processes these electrical signals into image signals that we can understand, and finally the memory is responsible for storing these images.
NIR cameras have a wide range of applications in several fields. For example, in the medical field, NIR cameras can be used to diagnose diseases such as cancer and vascular diseases. In the military field, NIR cameras can be used for target identification and missile guidance. In the environmental monitoring field, NIR cameras can be used to monitor air quality and ecological changes.
The technical details of NIR cameras mainly include lenses, filters, photodiodes, signal processors and other aspects. Different camera brands and models may have different technical characteristics and performance indicators. When choosing a NIR camera, you need to choose according to your needs and budget.
Overall, NIR cameras provide us with a new way of seeing information that is imperceptible to the human eye. With the continuous development of science and technology, the performance and application areas of NIR cameras will continue to expand and deepen.