One step rainbow holography

Claim 2

An on-axis apparatus for making rainbow holograms of real objects in one step comprising: (a) a spherical concave mirror and beamsplitter coupled to project a real image of an on-axis object to an on-axis holographic recording plane without left-to-right image reversal; (b) means defining a slit aperture operatively related to said mirror and said beamsplitter to limit parallax to one axis and afford visibility of a hologram in white light; (c) first support means including translational means to enable positioning of an illuminated object with respect to the center of curvature of said concave mirror; (d) a holographic recording plane located with respect to the center of curvature of said mirror in a position to record a one-step rainbow hologram on a photosensitive medium; (e) second support means including translational means to provide an expanded reference beam at a predetermined reference beam angle to illuminate the holographic recording plane; (f) third support means including translational means for equalizing object and reference beam path lengths; and (g) a source of coherent radiation coupled thereto for holographic recording.

Claim 3

An on-axis apparatus for making rainbow holograms from real holographic images in one step comprising: (a) a spherical concave mirror and beamsplitter coupled to project a real image reconstructed from a transmission hologram to a holographic recording plane without left-to-right image reversal; (b) a plurality of cylindrical lenses mounted in proximity to the real image plane of the image reconstruction, with axes orthogonal to each other, to project a slit on the surface of said concave mirror; (c) a plurality of cylindrical collimating lenses positioned to direct a beam to illuminate the laser transmission hologram so as to reconstruct a real image at the object plane of said concave mirror; (d) first support means at the object plane including translational means to enable positioning of the reconstructed real image with respect to the center of curvature of said mirror; (e) second support means including translational means to provide an expanded reference beam at a prescribed reference beam angle to illuminate the holographic recording plane; (f) a holographic recording plane located with respect to the center of curvature of said mirror to receive a photosensitive medium for recording a one-step rainbow hologram of said real image; (g) third support means including translational means to enable equalization of object and reference beam path lengths; and (h) a source of coherent radiation coupled thereto for holographic recording.

Claim 4

An on-axis apparatus for making rainbow holograms from real holographic images in one step comprising: (a) a spherical concave mirror and beamsplitter coupled to project a real image reconstructed from a transmission hologram to a holographic recording plane without left-to-right image reversal; (b) a plurality of cylindrical lenses mounted in proximity to the real image plane of the image reconstruction, with axes orthogonal to each other, to project a slit on the surface of said concave mirror; (c) a plurality of cylindrical collimating lenses positioned to direct a beam to illuminate the laser transmission hologram so as to reconstruct a real image at the object plane of said concave mirror; (d) first support means at the object plane including translational means to enable positioning of the reconstructed real image with respect to the center of curvature of said mirror; (e) second support means including translational means to provide an expanded reference beam at a prescribed reference beam angle to illuminate the holographic recording plane; (f) a holographic recording plane located with respect to the center of curvature of said mirror to receive a photosensitive medium for recording a one-step rainbow hologram of said real image; (g) third support means including translational means to enable equalization of object and reference beam path lengths; and (h) a source of coherent radiation coupled thereto for holographic recording.

Claim 5

An off-axis apparatus for making rainbow holograms in one step comprising: (a) a spherical concave mirror oriented so as to project a real image of object information which is located at an off-axis object plane to an off-axis holographic recording plane, both object and recording planes being selectively positioned relative to the center of curvature of the concave mirror; (b) a plane mirror located between the focal point and center of curvature of said concave mirror to reflect object information toward said concave mirror, thus maintaining proper image orientation without left-to-right reversal; and (c) means defining a slit aperture located beyond the focal point of said concave mirror and positioned between the focal point of said concave mirror and the physical position of said plane mirror, in order to project a real slit image into the holographic viewing space.

Claim 6

An off-axis apparatus for making rainbow holograms in one step comprising: (a) a spherical concave mirror oriented so as to project a real image of object information which is located at an off-axis object plane to an off-axis holographic recording plane, both object and recording planes being selectively positioned relative to the center of curvature of the concave mirror; (b) a plane mirror located between the focal point and center of curvature of said concave mirror to reflect object information toward said concave mirror, thus maintaining proper image orientation without left-to-right reversal; and (c) means defining a slit aperture located beyond the focal point of said concave mirror and positioned between the focal point of said concave mirror and the physical position of said plane mirror, in order to project a real slit image into the holographic viewing space.