A monitor filter is a device that attaches to a computer screen to protect it, reduce glare and radiation, and provide privacy. It can be made of plastic or composite materials and mounted in various ways. It is commonly used to reduce glare on traditional CRT monitors and for privacy on LCD monitors. It can also protect the screen from physical damage and reduce static electricity.
A monitor filter is a device that is attached in some way to a computer screen to protect the screen, hide its display from people not directly facing it, or reduce the amount of glare, static electricity, or radiation emitted. Filters can be made up of a few different substances, but most often they are made of plastic, such as acrylic, or are made from composite materials. The transparent viewing surface can be coated with a special film to prevent glare and create interference, or it can be constructed of a material that has the desired innate properties. The monitor filter can have special mounting brackets so it hangs in front of the monitor or special strips so it can be attached to the front, or it can be a thin sheet of plastic that fits into the recess of the monitor. especially in the case of liquid crystal displays (LCD).
One of the main reasons a monitor filter is used comes from the design of traditional cathode ray tube (CRT) monitors, which generally have curved glass surfaces over the viewing area of the screen. This glass and the curve easily reflect light from its surroundings, causing reflections that can darken the screen. A monitor filter cuts off this light, removing the glare from the screen. Another concern of CRT monitors is the amount of radiation emitted by the monitor, which monitor filters are able to mitigate.
LCD monitors, also called flat panel monitors, don’t emit as much radiation as a CRT and also are generally flat without a glass coating on the surface, automatically reducing the amount of reflections on the screen. While a monitor filter may still be needed to act as an anti-glare filter, a more common purpose is often privacy. A filter can be designed to create interference, which means that the monitor will appear black or blurry when viewed from angles that are not perpendicular to the screen.
Two other uses for a monitor filter are to protect the screen from physical damage and to reduce the amount of static electricity emitted. CRT monitors generate static electricity that can be transferred to a person and potentially damage computer hardware. Some filters include a grounding clip that can be attached to a piece of metal, absorbing and dissipating static charge as it is built up. Plastic filters can also be an easy way to keep your monitor clean, preventing scratches, scrapes, and oil damage to your fingers when touched.
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