One step rainbow holography

Details One step rainbow holography One step rainbow holography

1987-11-18

1990-05-15

Arnold, Bruce Y.

350 385, G03H 110

Patent

active

049252607

ABSTRACT:
Improved optical holographic apparatuses are disclosed for making white light viewable rainbow holograms in one step utilizing concave mirror optics. On-axis and off-axis configurations are presented for holography of real objects and for reduced image holography of a real image projection from a laser transmission hologram. An optical apparatus and curved recording device are devised to reduce and/or eliminate certain aberrations introudced by the concave mirror. To yield a wide holographic field of view at low cost, small diameter mirrors are employed in two alternative devices for replacing a single concave mirror in the various embodiments. Two methods are then presented to obtain reduced image size one-step rainbow holograms from a full size object or holographic image. Finally, a method is given for specifying the radius of curvature and minimum effective aperture of a concave mirror system in one step rainbow holography that maintains image aberrations at acceptable levels and yield the desired field of view.

REFERENCES:
patent: 4235505 (1980-11-01), Holriharan et al.
Benton, S., "Hologram Reconstruction with Extended Incoherent Sources", J. Opt. Soc. Am., 59, 1545A (1969).
Chen, H., and F. T. S. Yu, "One-Step Rainbow Hologram," Opt. Lett., 2(4), 85 (1978).
Chen, H., Tai, A., and F. T. S., Yu, "Generation of Color Images with One-Step Rainbow Holograms", Appl. Opt., 17(10), 1490-1491 (1978).
Hariharan, P., Hegedus, Z. S., and W. H. Steel, "One-Step Multicolour Rainbow Holograms with Wide Angle of View", Optica Acta, 26(3), 289 (1979).
Leith, E., "White-Light Holograms", Sci. Am. 235(4), 80 (1976).
Steel, W. H., and C. H. Freund, "Single-Step Rainbow Holograms without Distortion", Optics Communications, 51(6), 368 (1984).

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