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By Jessica Thomson

Light rays that are falling on us have three components. They are the ultra violet rays, the visible light we generally see and the infra red rays. An infrared filter blocks all lights except infrared rays to pass through the filter. These filters were initially developed for taking photographs using infrared light. The films used were sensitive to infrared lights. Infrared photography has been extended to digital cameras. These cameras use image sensors which are sensitive to infrared lights.

Besides use in infrared photography, these filters are used in many other areas.

These filters are being used in the industries. These filters enable to see through objects that are not visible to naked eyes under normal light. Water and other fluids absorb specific wavelengths. By using infrared filters, it can be ascertained whether a container has been filled. By using these filters, we can see through the labels to detect the fluids stored inside or we can detect the presence of any foreign materials.

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.

Similarly, by using these filters and infrared light source, it would be possible to keep watch on the movement of wild animals in the forest in the night. The hunters could also utilize this facility for game hunting in the night.

These filters used along with an infrared light source could enable the parents to keep watch on their children without turning the lights on.

It has been seen that using a camera with an infrared filter in the daytime, sometimes we could see through the clothing.

For some applications, it may be required to that the filter would reflect infrared light instead of allowing it to pass through. This type of filter has been used in Silver Cloud’s Heat Shield display filter windows so that heat of infrared light does not affect in outdoor applications.

Digital camera sensors are generally sensitive to infrared lights. This sensitivity could interfere with its functioning while taking photographs under normal lighting. Therefore, to improve the quality of pictures taken by these cameras, they are fitted with infrared filters which block infrared lights. These cameras would not be suitable for taking infrared photography.

For taking infrared photography using digital cameras, these blocking filters are removed and infrared filter is fitted in these cameras which allow only infrared light to pass. Special digital cameras are being developed for taking infrared photography to be taken from satellites or for taking photo using infrared radiation (Thermographic camera).Light rays that are falling on us have three components. They are the ultra violet rays, the visible light we generally see and the infra red rays. An infrared filter blocks all lights except infrared rays to pass through the filter. These filters were initially developed for taking photographs using infrared light. The films used were sensitive to infrared lights. Infrared photography has been extended to digital cameras. These cameras use image sensors which are sensitive to infrared lights.

Besides use in infrared photography, these filters are used in many other areas.

These filters are being used in the industries. These filters enable to see through objects that are not visible to naked eyes under normal light. Water and other fluids absorb specific wavelengths. By using infrared filters, it can be ascertained whether a container has been filled. By using these filters, we can see through the labels to detect the fluids stored inside or we can detect the presence of any foreign materials.

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.

Similarly, by using these filters and infrared light source, it would be possible to keep watch on the movement of wild animals in the forest in the night. The hunters could also utilize this facility for game hunting in the night.

These filters used along with an infrared light source could enable the parents to keep watch on their children without turning the lights on.

It has been seen that using a camera with an infrared filter in the daytime, sometimes we could see through the clothing.

For some applications, it may be required to that the filter would reflect infrared light instead of allowing it to pass through. This type of filter has been used in Silver Cloud’s Heat Shield display filter windows so that heat of infrared light does not affect in outdoor applications.

Digital camera sensors are generally sensitive to infrared lights. This sensitivity could interfere with its functioning while taking photographs under normal lighting. Therefore, to improve the quality of pictures taken by these cameras, they are fitted with infrared filters which block infrared lights. These cameras would not be suitable for taking infrared photography.

For taking infrared photography using digital cameras, these blocking filters are removed and infrared filter is fitted in these cameras which allow only infrared light to pass. Special digital cameras are being developed for taking infrared photography to be taken from satellites or for taking photo using infrared radiation (Thermographic camera).

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