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large screen flicker

Flickering is a disturbing effect that depends on various factors. One factor that has a direct influence on flicker is the screen size. The larger the screen and the smaller the distance between the viewer and the screen, the stronger the large-screen flicker.

The reason for large area flicker is that the relative speed of the electron beam of large area displays or the light beam of projectors decreases with the size of the display or the projection screen. To reduce large area flicker, the refresh rate is increased to allow the inertia of the eye to integrate the individual images. In monitors, to prevent flicker, the frame rate is increased to 85 Hz and higher. In televisions, 100 Hz technology is used to reduce flicker by displaying 50 full frames per second instead of 25 full frames. There are also devices that use 200 Hz technology and display 100 full frames per second. The presentation of such displays has an even lower motion blur and no large area flicker.

In projection technology, one works with linedoublers, which double the number of lines.

Informations:
Englisch: large screen flicker
Updated at: 16.07.2010
#Words: 177
Links: flicker, viewer, area, beam, light
Translations: DE
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