Viewing cone

The viewing cone is the set of effective viewing directions of an <a href="/facts/LCD_display/8B6xGBEz">LCD display</a>, as seen from the eye. This collection of angles resembles a <a href="/facts/Generalized_cone/2c9GIzYD">generalized cone</a>. The concept has been introduced as an international standard <a href="/facts/ISO_13406-2/chzTkTbp">ISO 13406-2</a>, which defines it as the range of viewing directions that can safely be used for the intended task without "reduced visual performance". This standard describes a complex procedure which evaluates the viewing cone from measurements of luminance and chromaticity versus direction of observation. <a href="/facts/ISO_13406-2/chzTkTbp">ISO 13406-2</a> introduces 4 viewing direction range classes, from a wide viewing cone, for many simultaneous observers, to the so-called "privacy display", with a severely limited viewing cone. Compliance routes for different display applications can now be found in the successor standard ISO 9241-300.

Viewing cone open-in-new

Viewing cone