Key technologies, technical indicators and advantages of high-definition cameras

firstly, of course, the photosensitive component CCD/CMOS, secondly, the lens, and thirdly, the image processor chip is equivalent to the "brain" of the camera, or the CPU representing the computing power of the camera. These three are the most important components that affect the shooting quality of the camera. According to the size of the CCD target surface, CCD chips have been developed in various sizes: most of the chips currently used are 1/3 "and 1/4". When buying a camera, especially when the camera angle is strictly required, the size of the CCD target surface and the cooperation between CCD and lens will directly affect the size of the field of view angle and the clarity of the image. 1 inch-the target size is 12.7mm* wide * 9.6mm high and 16mm diagonal. 2/3 inch-the target size is 8.8mm* wide * 6.6mm high and 11mm diagonal. 1/2 inch-the target size is 6.4mm* wide * 4.8mm high and 8mm diagonal. 1/3 inch-the target size is 4.8mm* wide * 3.6mm high and 6mm diagonal. 1/4 inch-the target size is 3.2mm* wide * 2.4mm high and 4mm diagonal. 1. Parameters of the lens The optical characteristics of the lens include several parameters such as imaging size, focal length, relative aperture and field of view, which are generally indicated in the manual attached to the lens. The following are introduced respectively. A, the imaging size of the lens can be generally divided into several specifications, such as 25.4mm(lin), 16.9mm(2/3in), 12.7mm(1/2in), 8.47mm(1/3in) and 6.35mm(1/4in), which correspond to different imaging sizes. When choosing a lens, the imaging size of the lens should be made. Table 2-1 lists the target dimensions of several common CCD chips, and the unit in the table is mm.