Dimensional Imaging produces 3D images using a patented raster barrier method. It allows for the viewing of the spatial image without individual devices such as glasses. The viewing device has not disappeared, it is merely moved away from the eyes of the viewer to the immediate vicinity of the image itself. * In this sense the viewing device is the raster barrier, or line grid, functioning as the optical instrument. It allows each eye of the viewer to see a different part of the film, creating the illusion of depth. The simplified illustration shows a section of the line grating (g) and the numbered image areas broken up by the grating into a series of narrow vertical elements. The left and right eye (El and Er) look through the line grating (g) to see different images on the film (1,2,3...).

The raster barrier designed by Dimensional Imaging allows for superior optical characteristics and dimensional stability in larger sizes. The quality exceeds lenticular techniques which use a screen made of plastic ridges. The best lenticular can achieve a perceived depth effect of about 4" to 7". (Perceived depth effect is determined by measuring the farthest projected point in front of and behind the actual print surface.) The raster barrier method by comparison can achieve a depth effect of approximately 24". A greater depth effect is essential in images poster size or larger (30" x 40" to 48" x 72") in order to convey a natural sense of volume. Lenticular images, even when computer interlaced, appear to have a only a surface relief effect when viewed at the appropriate distance. In addition, lenticulars are typically offset printed and lack color saturation for backlit applications. Without realistic depth and saturation these images are indeed a novelty but not a phenomenon. Dimensional Imaging encourages comparison to other available 3D imaging methods.

*adapted from N.A. Valyus, Stereoscopy (New York and London: The Focal Press)