As an important front-end of video surveillance, the arrival of the “high-definition†trend is naturally the strongest, so that most camera manufacturers gradually increase their investment in HD cameras. The so-called "workers want to do their best, they must first sharpen their tools." Without a matching HD lens, the front-end HD camera can not play its due effect. Of course, the high-definition surveillance requirements of security are not only for the camera, but also for the professional lens. Here, share the concept and requirements of the next million HD surveillance cameras. The biggest advantage of millions of HD is the high pixel and high definition. So what kind of conditions do you need to achieve for a surveillance camera? Is it a true "HD lens"? Compared to ordinary surveillance cameras, HD lenses can achieve true high definition, not only white, even at night, evening sunsets. At dusk, it also provides an all-weather, unfocused image. Usually, the pixels in the field of view of 70% of the lens are the standard of the lens pixel (the lens pixel is defined by the pixel of the field of view of 70% of the field of view), and then by distinguishing the edge of the lens, the pixel can reach 1000 TVL or more. For the "HD lens. In order to more intuitively display the effect of the HD lens, we use the overall picture taken by the SV1040GNBIRMP lens, and the center and square effect of the enlarged picture. This article refers to the address: http:// Figure 1 high-definition effect map figure 2 From the above test chart, a brief analysis can be done. As can be seen in the overall picture taken (Fig. 1), the numbers, figures and general lines in the picture can be seen very clearly, with high resolution and fine picture quality, and the picture color is sharp and sharp. 2 is an enlarged view of the center image. After the center image is enlarged by 4 times, the image is still very clear, and thus the image pixels are high. Figure 3 is an enlarged four-corner image. After one corner of the test chart is enlarged by 6 times, the graphic lines are still sharp, the edges are sharp, the layers are rich, the texture is strong, and the tone is clear. Take this effect diagram as an example. When the contrast and resolution reach a certain height, it is the truly ideal million HD lens. image 3 Toroidal Transformer,Toroidal Transformer Audio,Diy Toroidal Transformer,Toroidal Current Voltage Transformer Guang Er Zhong(Zhaoqing)Electronics Co., Ltd , https://www.gezadapter.com
