Frame for a visual presentation device

A frame for a visual presentation device, the visual presentation device having a substantially flat viewing area demarcated by a viewing area border, the frame comprising:

• fastening means for fastening the frame at a predetermined distance (d1) in front of the viewing area;
• a finite material thickness (d) in which a transparent opening through the material thickness is formed;
• wherein the transparent opening is dimensioned such that when the frame is fastened at the predetermined distance in front of the viewing area:
• the transparent opening is parallel to the viewing area within 30 degrees;
• the transparent opening has a proximal end and a distal end separated from each other by the material thickness, such that the distal end faces the visual presentation device and is closer to the visual presentation device than the proximal end;
• and
• a range of viewing positions is created in which the proximal end of the transparent opening hides the distal end and the viewing area border, and only a portion of the viewing area larger than zero but smaller that the viewing area in full is visible through the proximal end of the transparent opening, and
• wherein the transparent opening is optically passive.