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There are many types of video cameras, waterproof digital video cameras, and video cameras, and the basic principle of their work is the same: converting optical image signals into electrical signals for storage or transmission. When we shoot an object, the light reflected on the object is collected by the camera lens, focused on the light-receiving surface of the camera device (such as the target surface of the camera tube), and then the light is converted into electrical energy through the camera device, that is, we get "video signal". The photoelectric signal is very weak and needs to be amplified by the pre-play circuit, and then processed and adjusted by various circuits. The final standard signal can be sent to a recording medium such as a video recorder for recording, or transmitted through a transmission system or sent to a monitor. show. A device that completes image decomposition and photoelectric signal conversion. Image decomposition is the process of decomposing a complete image into several independent pixels (the smallest unit that constitutes a TV image). Generally speaking, the higher the number of pixels, the clearer the image. Each pixel is represented by only a single color and brightness. The imaging device can convert the optical signal of each pixel in the image into a corresponding electrical signal, and then transmit it to the output end in a certain order. The camera device is divided into two categories: camera tube and solid-state (semiconductor) camera device. The high-speed digital camera and accessories is an analytical instrument used in the field of transportation engineering, which was launched on September 15, 2017. Specifications 1280 x 800, 7530 frames per second, minimum exposure time is 10288µs.