Demonstration device for image on display screen e.g. of television receiver, has evaluation block for measures and position of demonstrated image, input block for optimal visual angle and detection device for position of head of observer

摘要

The device has evaluation block (3) for measures and position of demonstrated image on the display screen. An input block (7) is used for optimal visual angle, which should correspond to the measures of the demonstrated image. A device (6) detects the position of the head of the observer. The outlets of input block and detection device are connected with inlet of evaluation block.