Infrared radiation is a component of the visible light along with ultra violet rays. Infrared radiation is a kind of electromagnetic radiation in which wavelength ranges from about 1 micrometer to 1 millimeter. The wavelength of these radiations is just a little longer than visible light and cannot be seen with the naked eye.
Infrared filters are used to allow only infrared light to pass through by blocking visible light and ultra violet rays. These filters are extensively used in infrared photography and for those applications which require infrared light for their operation. These applications could be remote controls, security system, presence sensing devices, proximity sensors, and scanners.
Infrared filters have different industrial applications besides in infrared photography. In many manufacturing processes, infrared filters are used to see through objects which are not visible to naked eye under normal lighting, for water detection and low light detection. Water as well as other liquids absorbs specific wavelengths of light. Therefore, by using
Infrared Filter it would be possible for an automated system to detect whether a container is filled or not.
Infrared filters could be used for night time surveillance by security personnel as well by wild life enthusiasists.
Another application of infrared red filter is baby monitoring. Using infrared light source, parents could watch their baby in complete darkness without switching on light.
Weather satellites use infrared imaging device to map cloud patterns and provide images that could be seen in many weather reports.
Infrared imaging devices are also used for medical diagnostic applications. One of these medical applications is involved in the process of breast cancer screening. The underlying principle of such an application is that the cancerous cells produce inflammation with increased temperature. These locations of increased temperature can be located using infrared imagers. For the operation of these imagers, infrared filters are required.
Infrared imagers have also been used to locate the edge of burning areas in forest fire, thus helping people to control such fire easily.
These filters also find application in security and surveillance applications. By using infrared light source (which will not be visible to the naked eye) and using infrared sensitive cameras or binoculars any movement made in the darkness of the night could be easily monitored.
These filters are made from broad band acrylic material which has been specially formulated to transmit infrared rays only.
Infrared filters have many applications in our daily life as well as in business and industry and they continue to grow.
Article Source: http://www.alltopinfo.com
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