Functional characteristics of various optical lenses

The optical lens is a key component in the machine vision system. Its essential function is to convert the optical signal into an ordered electrical signal of the AFT-808 small high-definition customizable large size optical prism. The optical lens is generally installed on the machine line instead of the human eye for measurement and judgment, and is converted into an image signal by the digital image pickup target and transmitted to a dedicated image processing system. The image system performs various operations on these signals to extract features of the target, and then controls the action of the device on the spot according to the result of the discrimination. Compared with traditional civilian cameras, optical lenses have high image stability, high transmission capacity and high anti-interference ability. Most of the optical lenses on the market are based on CCD (Charge Coupled Device) or CMOS (Complementary Metal Oxide). Semiconductor) chip camera. CCD optical lens is a commonly used image sensor for machine vision. It integrates photoelectric conversion and charge storage, charge transfer, and signal reading. It is a typical solid-state imaging device. The outstanding feature of CCD cameras is the use of charge as a signal, unlike other devices that use current or voltage as a signal. Such an imaging device forms a charge packet by photoelectric conversion, and then transfers and amplifies the output image signal under the action of a driving pulse. A typical CCD camera consists of an optical lens, timing and sync signal generator, vertical driver, and analog/digital signal processing circuitry. As a functional device, CCD camera has the advantages of no burn, no hysteresis, low voltage operation and low power consumption compared with vacuum tube. The development of CMOS camera image sensors began in the early 1970s. In the early 1990s, with the development of VLSI manufacturing process technology, CMOS camera image sensors were rapidly developed. The CMOS camera image sensor integrates a photosensitive element array, an image signal amplifier, a signal reading circuit, an analog-to-digital conversion circuit, an image signal processor, and a controller on one chip, and has the advantage of program random access of local pixels. CMOS camera image sensors are widely used in high resolution and high speed applications due to their good integration, low power consumption, high speed transmission and wide dynamic range. In addition, sale of custom optical prism assemblies can be divided into: According to the structural characteristics of the sensor can be divided into line array camera, area array camera; According to the scanning method, it can be divided into an interlaced scanning camera and a progressive scanning camera; According to the resolution, it can be divided into ordinary resolution camera and high resolution camera; According to the output signal method, it can be divided into analog camera and digital camera; According to the output color, it can be divided into a monochrome (black and white) camera and a color camera; According to the output signal speed can be divided into ordinary speed camera, high speed camera; According to the response frequency range, it can be classified into a visible light (ordinary) camera, an infrared camera, an ultraviolet camera, and the like.