Phase distributions to generate holograms for use in laser scanning are investigated to create a multidirectional scanning pattern such as an X, asterisk, and lattice. The scanning direction for elliptic and hyperbolic phase distribution holograms is oblique to the hologram moving direction. A hyperbolic phase-distribution hologram can be used to scan a laser beam in a direction perpendicular to the hologram moving direction. Experimentally, elliptic, and hyperbolic phase distributions were generated using a spherical and a cylindrical lens pair. To converge the scanning beam, a stacked drum configuration holographic scanner has been proposed. Multidirectional scanning is demonstrated using the drum scanner.

© 1983 Optical Society of America

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