Optical lenses are a key component in machine vision systems. Their essential function is to convert high precision ZnS optics into high-definition optical lenses into ordered electrical signals. Choosing the right camera is also an important part of the design of the machine vision system. The camera not only directly determines the image resolution and image quality, but also directly relates to the operating mode of the whole system. Optical lenses, also known as cameras, have high image stability, high transmission capacity, and high anti-interference ability compared to traditional civilian cameras (cameras). Currently, optical lenses on the market are mostly based on CCD or CMOS chips. camera. With the maturity of technology, optical lenses have developed rapidly. In recent years, foreign high purity LiSAF, LiSGaF and LiCAF laser crystals manufacturers have risen rapidly and become the *** in the field of machine vision. Some representative ones are: basler camera, gray point camera, etc. Let us look at the main parameters of optical lenses: 1. Resolution: refers to the sensitivity of the pixel sensor to different light waves. The general response range is 350nm-1000nm. Some cameras add a filter in front of the target to filter out the infrared light. If the system needs to be sensitive to infrared light, Remove the filter. 2. Pixel Depth: This parameter also affects the quality of the image to some extent. 3. Large frame rate: This parameter is an important measure of the camera's transmission image rate. For a typical area array camera, the number of frames is collected per second. For most line cameras, the number of lines collected per second is This is an indispensable parameter to consider when choosing an optical lens. 4. Exposure mode: Different high purity YVO4 laser crystal have different exposure modes. Line array cameras generally use progressive exposure. Area array cameras generally use frame exposure and scroll line exposure, and some area array cameras use field exposure. 5. Cell size: The cell size and resolution together determine the size of the camera's target surface. The camera target has a great influence on the image quality of the image. In general, the smaller the size of the pixel, the harder it is to manufacture, but the smaller the image quality of the pixel is, the higher the quality. 6. Interface type: Different optical lenses have different interface types. There are many types of interfaces such as GIGE Gigabit Network, USB2.0, USB3.0, Camera Link1394A, 1394B, etc. A smart camera is not a simple camera, but a highly integrated micro-machine vision system. It integrates image acquisition, processing and communication functions into a single camera, providing a machine vision solution that is versatile, modular, highly reliable and easy to implement. At the same time, due to the application of new DSP, FPGA and large-capacity storage technology, its intelligence level is continuously improved, which can meet the needs of a variety of machine vision applications.