What kind of projectors can I use for HoloPro™?
Key words: projection ratio, keystone/trapezium correction, ANSI lumen Projection Ratio: The projection ratio indicates the ratio of the picture width to the projection distance. Almost every beamer has different lenses. In order to know how far the projector has to be set up from the screen for a given screen width, the projection ratio must be known. Example: the projection ratio is 2:1, i.e. the beamer must be set up at a distance that is twice the picture width. If the picture width is 2m, the beamer must be set up at a distance of 4 m from the screen. HoloProTM is designed so that a projection ratio of approx. 1.8:1 must be adhered to. So in order to generate a 1m-wide screen, the projector must be positioned at a distance of 1.8m. Keystone/Trapezium correction: A keystone is the distortion of a projected image that arises when the projector is positioned diagonally to the projection area. This trapezium-shaped distortion can be corrected either by moving the lenses parallel to th
