SU1425579A1 - Lens raster for observing stereoscopic pictures - Google Patents

Abstract

The invention relates to printing and allows an increase in the observed stereoscopic effect. The raster consists of two monolithic transparent layers adjacent to each other. The periodic system of refractive surfaces on the inner side of the outer layer -1 is made as a set of dihedral angles 5, facing tops towards the intermediate layer 2. The bisector planes of these angles are aligned with the optical axes of the respective cylindrical lenses 4. The angle of inclination of the angles 5 to the plane 7 is directly proportional to the width of the lenses 4 and the refractive index of layer 2 and inversely proportional to the focal length of these lenses and the refractive index of layer 1. 1 sludge. S (L Ñ 4 to ate the joint venture with hl /, 1 ± /. Y / I g. S fe: i VV bz | - I i

Description

The invention relates to polygraphy and can be used in the production of raster stereoscopic images.

The purpose of the invention is to increase the stereoscopic effect observed through a raster in the image of optical paths for increasing the zonal stereo basis during the decoding process.

The drawing shows the lens ipacTp, section,

i The lens raster consists of two 1MOLITHIC transparent layers adjacent to each other without a gap, for example, glued with an optical adhesive on the interface. At the same time, the first outer layer 1 has a large refractive index than the refractive index of the second intermediate layer | 2, placed between layer 1 and the decoded stereo image 3, Outer layer 1 on the outside facing the observer, is limited by the periodic system of cylindrical lenses 4, and with an internal periodic system of refracting surfaces, | gay, made as a set; | The angle of the system of cylindrical lenses 4 (their width S) is equal to the period of the system of dihedral angles 5, and the joints between the lenses 4 coincide with the joints 111 between the dihedral angles 5. The angular angles 5 combined with optical axes 6 of the corresponding cylindrical lenses 4, and the angle c1c of inclination of the faces of the dihedral angles 5 to the plane 7, perpendicular to the indicated optical axis 6, is directly proportional to the width of the cylindrical lenses 4 and the refractive index of layer 2 and back n oportsibnalen focal length of these lenses, and refractive index layer 1.

Raster works as follows.

Since the outer layer 1 of the raster is made of a transparent material with a high refractive index such as polystyrene (p 1.59), and the intermediate layer 2 is made of a transparent material with a lower refractive index — for example of Plexiglas (p 1.49), inclined sectional planes (the faces of the dihedral angles 5) are refracted, and the rays of light passing through them are deflected as shown in the drawing.

As a result of such a deviation of the rays, the information sampling points are separated by a greater distance, i.e. the magnitude of the zonal basis increases with Bj to Bb, respectively, leading to an increase in the real stereo shooting and the resulting stereoscopic effect. This increase in the shooting stereo basis is achieved only by changing the parameters of the process of sampling information from a conventional coded image.

The angles of inclination of the refractive planes cannot be arbitrary, since in a number of cases the sighting rays could leave their zone to the next, if the angles of inclination are large, or the sighting rays would pass as in a regular raster if the angles of inclination are too small. To optimize the sampling process with an increased ZG ZS base, you need these. The rays should be directed so that they intersect the image plane 3 in each zone approximately in the middle of the half-half, closer to its outer boundary, but do not coincide with this boundary. This is ensured by the above requirement for the angle of inclination of the faces of the dihedral angles.

Claims (1)

Claims of the invention A lens raster for viewing stereo images, consisting of two adjacent transparent layers without a gap, in which the first outer layer has a higher refractive index than the second intermediate layer, and the first outer layer on the outer side is bounded by a periodic system of cylindrical lenses and with an internal system of a refractive surface, the period of which is equal to the period of the system of cylindrical lenses, and the joints between which coincide with the joints between the cylindrical In order to increase the observed stereoscopic effect, the periodic system of refractive surfaces on the inner side of the first outer layer is made as a set of dihedral angles turned to the second intermediate layer, and the bisector planes of these angles are juxtaposed. . - 1A25579 HY with optical axes of appropriate-: cylindrical lenses and indicator of pre-cylindrical lenses, and the angle of inclination of the second intermediate layer the faces of the dihedral angles to the flat and inversely proportional to the focal, the bones, perpendicular to the optical, the distance of these lenses and the index axis, directly proportional to the width of the first outer layer.