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A monitor filter is an accessory to the computer display to filter out the light reflected from the smooth glass surface of a CRT or flat panel display. Many also include a ground to dissipate static buildup. A secondary use for monitor filters is privacy as they decrease the viewing angle of a monitor, preventing it from being viewed from the side; in this case, they are also called privacy screens.
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privacy screen (microscope photo)
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The operating principle of a slat protection film (drawing)
The standard type of anti-glare filter consists of a coating that reduces the reflection from a glass or plastic surface. These are manufactured from polycarbonate or acrylic plastic. An older variety of anti-glare filter used a mesh filter that had the appearance of a nylon screen. Although effective, a mesh filter also caused degradation of the image quality.
Marketing names of privacy filters:
Support for privacy screen is available since Linux kernel 5.17 that expose it through Direct Rendering Manager and is used by GNOME 42.
References
- ^ Kruegle, Herman (2006). CCTV surveillance: analog and digital video practices and technology (2nd ed.). Butterworth-Heinemann. pp. 271–272. ISBN 0-7506-7768-6.
- ^ Anshel, Jeffrey (2005). Visual ergonomics handbook. CRC Press. p. 56. ISBN 1-56670-682-3.
- "HP SureView Whitepaper" (PDF). hp.com.
- "ThinkPad PrivacyGuard with PrivacyAlert". youtube.com. Lenovo. 28 April 2020. Archived from the original on 2021-12-14.
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