[ Huaqiang Security Network News ] When using ordinary cameras, you may wish to take a look at the five low illuminations of ordinary cameras, or you can select ordinary cameras according to the environment.
The wavelength range of visible light is 380nm-780nm. The wavelength of visible light is divided into red, orange, yellow, green, cyan, blue and purple from long to short. The wavelength is shorter than violet light, called ultraviolet light, and the wavelength longer than infrared light is called infrared. Light. The CCD sensor has a transparent electrode that absorbs ultraviolet light, so the CCD cannot accept ultraviolet light. The color camera of the ordinary color camera has red, green and blue color filter strips, so the color camera cannot feel the infrared light. The ordinary CCD black-and-white camera has a wide spectral range, which not only can sense visible light, but also can sense infrared light.
According to the above principle, in an environment with poor lighting conditions, engineers often use the following scheme to capture clear images.
1. Ordinary low-light CCD black-and-white camera + infrared light <br> Install infrared light radiation “illumination†on the monitoring site to generate infrared light that can be invisible to the human eye and can be captured by ordinary cameras. Night-time shooting can be achieved by CCD black-and-white camera.
2, color to black and white camera + infrared light <br> The so-called color to black and white camera means that the day is a color camera, when the night light conditions are very poor, the use of black and white images on the high sensitivity of infrared, automatically switch to black and white mode, Shoot with the help of infrared rays. When combined with an infrared light, the low illumination camera must meet the minimum illumination supported by the infrared light.
3, infrared low illumination color camera <br> Infrared low illumination color camera infrared sensitivity is more than 4 times higher than the average camera, can work under zero illumination (0Lux).
4) Low-speed shutter camera <br> The low-speed shutter camera, also known as the image-accumulating camera, continuously stores multiple frames (up to 128 frames) through the computer, which are blurred due to insufficient light, and accumulate to become a clear picture with the help of SLOWSHUTTER Technology to achieve shooting at 0.008 lux / F1.2 illumination. This low-light camera is suitable for museums that prohibit red and ultraviolet damage, nighttime biological activity observations, and nighttime military shoreline surveillance.
5, ultra-low illumination camera <br> Ultra-low illumination camera using EXVIEWHAD technology to greatly improve the sensitivity, its color illumination can reach 0.05LUX, black and white can reach 0.003-0.001LUX. When equipped with a dedicated infrared device, high-definition black-and-white images can be obtained for shooting under 0Lux.
The wavelength range of visible light is 380nm-780nm. The wavelength of visible light is divided into red, orange, yellow, green, cyan, blue and purple from long to short. The wavelength is shorter than violet light, called ultraviolet light, and the wavelength longer than infrared light is called infrared. Light. The CCD sensor has a transparent electrode that absorbs ultraviolet light, so the CCD cannot accept ultraviolet light. The color camera of the ordinary color camera has red, green and blue color filter strips, so the color camera cannot feel the infrared light. The ordinary CCD black-and-white camera has a wide spectral range, which not only can sense visible light, but also can sense infrared light.
1. Ordinary low-light CCD black-and-white camera + infrared light <br> Install infrared light radiation “illumination†on the monitoring site to generate infrared light that can be invisible to the human eye and can be captured by ordinary cameras. Night-time shooting can be achieved by CCD black-and-white camera.
2, color to black and white camera + infrared light <br> The so-called color to black and white camera means that the day is a color camera, when the night light conditions are very poor, the use of black and white images on the high sensitivity of infrared, automatically switch to black and white mode, Shoot with the help of infrared rays. When combined with an infrared light, the low illumination camera must meet the minimum illumination supported by the infrared light.
3, infrared low illumination color camera <br> Infrared low illumination color camera infrared sensitivity is more than 4 times higher than the average camera, can work under zero illumination (0Lux).
4) Low-speed shutter camera <br> The low-speed shutter camera, also known as the image-accumulating camera, continuously stores multiple frames (up to 128 frames) through the computer, which are blurred due to insufficient light, and accumulate to become a clear picture with the help of SLOWSHUTTER Technology to achieve shooting at 0.008 lux / F1.2 illumination. This low-light camera is suitable for museums that prohibit red and ultraviolet damage, nighttime biological activity observations, and nighttime military shoreline surveillance.
5, ultra-low illumination camera <br> Ultra-low illumination camera using EXVIEWHAD technology to greatly improve the sensitivity, its color illumination can reach 0.05LUX, black and white can reach 0.003-0.001LUX. When equipped with a dedicated infrared device, high-definition black-and-white images can be obtained for shooting under 0Lux.
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