Patent ID: 7660499

Claim:
An optical spot displacement apparatus comprising: a face, said face being divided into a plurality of columns; each column of said plurality including at least one entrance region, a respective exit region for each entrance region, and a predetermined number of prisms interconnecting corresponding entrance and exit regions, each entrance region and corresponding prisms and exit region of a same column configured within the corresponding column to displace at least one incident light beam a common predetermined distance from incidence and return a corresponding displaced light beam, and entrance regions and corresponding prisms and exit regions of different columns configured within each corresponding column to displace said at least one incident light beam a different predetermined distance from incidence; wherein the prisms of each column comprise roof prisms; wherein each roof prism comprises an entrance for accepting at least one light beam incident thereon and an exit for exiting said at least one incident light beam therefrom; and wherein each roof prism of the same column is configured within the corresponding column to displace the at least one incident light beam a common predetermined distance from prism entrance to prism exit, and each roof prism of different columns is configured within each corresponding column to displace the at least one incident light beam a different predetermined distance from prism entrance to prism exit.