Industrial cameras, also known as industrial cameras or industrial cameras, have high image stability, high transmission capability and high anti-jamming capability compared to traditional civilian cameras (cameras), and most of the industrial cameras on the market are based on CCD (Charge coupled Device) or CMOS (complementary Metal Oxide Semiconductor) chip camera. CCD is the most commonly used image sensor in machine vision at present. It is a typical solid imaging device, which integrates photoelectric conversion, charge storage, charge transfer and signal reading. The salient feature of the CCD is that it is charged as a signal, and unlike other devices, it is a signal of current or voltage. This kind of imaging device forms an electric purse by photoelectric conversion, then transfers and amplifies the output image signal under the action of driving pulse. A typical CCD camera consists of an optical lens, a timing and synchronous signal generator, a vertical driver, and a analog/digital signal processing circuit. CCD as a functional device, compared with the vacuum tube, with no burns, no lag, low voltage operation, low power consumption and other advantages. The development of CMOS image sensor appeared in the early 1970s, early 90, with the development of VLSI manufacturing technology, CMOS image sensor has been developed rapidly. CMOS image sensor integrates photosensitive element array, image signal amplifier, signal reading circuit, analog-to-digital conversion circuit, Image signal processor and controller on a chip, and also has the advantage of local pixel programming random access. At present, CMOS image sensor has been widely used in high-resolution and high-speed applications for its good integration, low power consumption, high speed transmission and wide dynamic range.
Anything classification must have its own classification standards, industrial cameras are no exception, according to the chip type can be divided into CCD camera, CMOS camera, according to the structure of the sensor can be divided into linear array camera, surface array camera, according to the scanning mode can be divided into interlaced camera, progressive scan camera According to the resolution size can be divided into ordinary resolution cameras, high-resolution cameras, according to the output signal mode can be divided into analog cameras, digital cameras, according to the output color can be divided into monochrome (monochrome) camera, color camera, according to the output signal speed can be divided into ordinary speed camera, high-speed camera According to the response frequency range can be divided into visible light (ordinary) camera, infrared camera, ultraviolet camera and so on.