RASTER DEVICE FOR VIEWING OF PATTERNS Russian patent published in 1997 - IPC

FIELD: optical systems for visual examination of stereoscopic pictures. SUBSTANCE: the device uses a raster screen having a face surface and a working surface with a raster relief made of lens elements, and on the external contour made in the form of a contour of the preset pattern, reflecting layer applied either onto the working surface of the raster relief, or located behind it at a distance providing for creation of patterns of the respective lens elements over its face surface. The raster screen may be made in the form of sections representing the elements of the present pattern installed for movement relative to one another; the reflecting layer may be made on the external contour in the form of a contour of the preset pattern; at least part of the layer reflecting surface corresponding at least to one element of the preset pattern or at least to one section may have a color differing from the color of the rest of the layer reflecting surface. At least one section of the raster screen may have a spacing or/and focus of its lens elements differing from the spacing and/or focus of the lens elements of the other screen sections, at least part of which may be made of color-carrying transparent coating with a color differing from the color of the raster screen material. EFFECT: enhanced convenience in use. 9 cl, 3 dwg