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  • Four major problems of the infrared camera night vision security monitoring system

        Color problem
        All black and white cameras sense infrared light. Infrared light in the visible light conditions for color cameras to a stray light, and will reduce the clarity and color reproduction of the color ip camera, color camera filters to prevent infrared involved in imaging. To color camera sensor infrared two approaches, switch filters, blocking the infrared rays into visible light conditions; remove the filter in the absence of visible light, so that the infrared to enter this program have been The image quality is good, but the high cost and the switching mechanism will lead to certain failure rate. Open filter on a specific infrared channel, allowing the infrared light and infrared light wavelengths come in, this approach does not increase the cost, but the color reproduction is slightly worse.
        Focus offset
        Visible light and infrared light of different wavelengths of the imaging focus is not a plane, resulting in the daytime visible under the conditions of the pictures are clear night under the conditions of infrared light blurred, the image is clear under the conditions of the infrared light at night, daytime visible under the conditions of image blur. Can be used three ways to solve. First, the use of auto-focus integrated camera; Second, the IR-specific focus offset lens; Third, the use of professional adjustment tools, under the conditions of the existing lens can not offset.
        Hundred people to do infrared products there will be one hundred standard infrared night vision distance. I see, or should the client application effect. What are the criteria of the customers? Is to see people! "Visual distance", "found that from these uncertainties, the allegations are vague. Between the different grades of network camera, lenses match, many times may vary for the same light the light emitted by the infrared light sensitivity, visual distance can also be a lot of difference. Therefore, the infrared light of a lamp as the number of m saying is not very scientific. The role of an infrared lamp distance, only with determining the quality of the Wireless ip camera and lens to match in order to determine the distance. Also, because the applications in different environments, the effect will be very different, it is best to leave a certain margin.
        The camera sensitivity is a core part of the infrared night vision surveillance. Sensitivity as possible, the stronger the infrared sensing ability. Of course, the sensitivity of the better camera prices are also more expensive. In general, infrared night vision systems in less than 50 meters, choice of 0.1 lux camera is relatively good; 50 meters to 100 meters range night vision system should be selected 0.01 lux camera; night vision system should be used more than 100 meters to 0.001 lux more than one camera. Of course, with the increase in sensitivity, the price of the wifi ip camera have a greater increment.
        Of course, like many other products, cameras vacuity index is particularly serious. I once took a 0.1 lux camera and a nominal 0.0001 lux camera for comparison, which is actually less than the former. More camera manufacturers to artificially improve the signal strength, the sensitivity is very good, but the signal to noise ratio is poor, resulting in a night image "snow point" A lot of great.

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