By WDQ OPTICS | 26 February 2021 | 0 Comments
Application Of Optical Filter In Optical Fog Transmission Technology
Application Of Optical Filter In Optical Fog Transmission Technology
Optical fog transmission technology is formed by the characteristics that different wavelengths of light have different characteristics. Natural light is composed of light waves with different wavelengths. The wavelengths from long to short are red, orange, yellow, green, blue, and purple respectively. Among them, those with a wavelength less than 390nm are called ultraviolet, and those with a wavelength greater than 780nm are called infrared. Neutral density filter
People who know how to switch cameras day and night are familiar with filters. Generally, this type of camera is equipped with two filters. One is responsible for filtering out light waves other than visible light during the day, making the imaging clearer and brighter; One is applied at night, which is responsible for releasing the infrared band that can be carried by CCD to realize infrared monitoring at night. The professional fog lens has built-in highly-targeted filters to intercept the light of the required band. In order to adapt to specific environmental conditions, multiple filters for different bands are often loaded and linked with the camera through the 485 interfaces to realize switching.
Normally, cameras equipped with fog lenses only need to have day-to-night conversion functions in terms of basic imaging performance. However, considering the high cost of fog lens, some camera manufacturers also began to seek a more economical optical fog transmission mode. Unlike the day-to-night conversion cameras with two filters in the past, four filters were added to the camera, In addition to day-night conversion, strong light suppression is realized by adding a filter that can selectively filter light in the 400 nm-600 nm band; Of course, in order to intercept the near-infrared band suitable for imaging, fog filter is specially added to achieve more economical optical fog transmission. The mechanical device can be automatically controlled by the camera or manually switched. The four-color filter photoelectric combined intelligent fog penetrating camera, which integrates two fog penetrating functions of optical fog penetrating and electric fog penetrating, can realize fog penetrating more than twice the visibility.
Optical fog transmission technology is formed by the characteristics that different wavelengths of light have different characteristics. Natural light is composed of light waves with different wavelengths. The wavelengths from long to short are red, orange, yellow, green, blue, and purple respectively. Among them, those with a wavelength less than 390nm are called ultraviolet, and those with a wavelength greater than 780nm are called infrared. Neutral density filter
People who know how to switch cameras day and night are familiar with filters. Generally, this type of camera is equipped with two filters. One is responsible for filtering out light waves other than visible light during the day, making the imaging clearer and brighter; One is applied at night, which is responsible for releasing the infrared band that can be carried by CCD to realize infrared monitoring at night. The professional fog lens has built-in highly-targeted filters to intercept the light of the required band. In order to adapt to specific environmental conditions, multiple filters for different bands are often loaded and linked with the camera through the 485 interfaces to realize switching.
Normally, cameras equipped with fog lenses only need to have day-to-night conversion functions in terms of basic imaging performance. However, considering the high cost of fog lens, some camera manufacturers also began to seek a more economical optical fog transmission mode. Unlike the day-to-night conversion cameras with two filters in the past, four filters were added to the camera, In addition to day-night conversion, strong light suppression is realized by adding a filter that can selectively filter light in the 400 nm-600 nm band; Of course, in order to intercept the near-infrared band suitable for imaging, fog filter is specially added to achieve more economical optical fog transmission. The mechanical device can be automatically controlled by the camera or manually switched. The four-color filter photoelectric combined intelligent fog penetrating camera, which integrates two fog penetrating functions of optical fog penetrating and electric fog penetrating, can realize fog penetrating more than twice the visibility.
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