COMPACT HOLOGRAHIC HUMAN-MACHINE INTERFACE
First Claim
1. A method of recording an object image of first hologram as a second hologram, comprising the steps of:
- recording a first laser transmission hologram of an object image onto a first holographic medium at a first angle of reconstruction;
reconstructing the object image by passing a reconstruction beam of the laser light through a first optical system through a surface of the first holographic medium at the first angle of reconstruction toward a second holographic medium;
transferring the object image by passing a reference beam of the laser light through a second optical system to strike a surface of the second holographic medium at an acute angle of reconstruction; and
recording the reconstructed object image on the second holographic medium as a second hologram when the reconstruction beam and the reference beam concurrently strike and expose the second holographic medium.
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Abstract
A method of recording an object image of a first hologram as a second hologram is provided. A first hologram is recorded at a first angle of reconstruction and a holographic recording medium is provided. An object beam is directed through the first hologram at the first angle of reconstruction to reconstruct the object image on the recording medium. The recording medium is struck with a reference beam at a second angle of reconstruction to form a wave interference pattern with the object beam. The second angle of reconstruction is between 45 and 90 degrees. The wave interference pattern is recorded. A switch is provided that includes a hologram that has an angle of reconstruction between 45 and 90 degrees. A reproducing light source is positioned to direct light through the hologram at the angle of reconstruction to form a holographic image at a predetermined distance from the hologram. The switch includes a detector that detects the presence of an object proximate to the holographic image. The axis of the detector beam source is not perpendicular to the plane of the medium to which its hologram is affixed.
67 Citations
45 Claims
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1. A method of recording an object image of first hologram as a second hologram, comprising the steps of:
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recording a first laser transmission hologram of an object image onto a first holographic medium at a first angle of reconstruction; reconstructing the object image by passing a reconstruction beam of the laser light through a first optical system through a surface of the first holographic medium at the first angle of reconstruction toward a second holographic medium; transferring the object image by passing a reference beam of the laser light through a second optical system to strike a surface of the second holographic medium at an acute angle of reconstruction; and recording the reconstructed object image on the second holographic medium as a second hologram when the reconstruction beam and the reference beam concurrently strike and expose the second holographic medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for recording an object image of first hologram as a second hologram, comprising:
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a laser configured to produce a light beam; a first holographic medium containing a recording of a first laser viewable transmission hologram of an object image recorded at a first angle of reconstruction; a first optical system configured to direct a reconstruction beam from the laser to strike the surface of the first holographic medium at the first angle of reconstruction to reconstruct the object image; a second holographic medium configured to contain a recording of a second laser viewable transmission hologram recorded at a second angle of reconstruction; and a second optical system configured to direct a reference beam from the laser to strike a surface of the second holographic medium at the second angle of reconstruction, wherein the second angle of reconstruction is greater than about 45 degrees and less than about 90 degrees, and wherein the reconstruction beam and reference beam are configured to concurrently strike the surface of the second holographic medium. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A compact holographic switch comprising:
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a hologram affixed to a medium, wherein the hologram has an angle of reconstruction greater than 45 degrees and less than 90 degrees; a reproducing light source positioned on one side of the hologram configured to direct light through the hologram at the angle of reconstruction to form a holographic image at a predetermined distance from the hologram on an opposite side of the hologram from the reproducing light source; and a detector configured to detect presence of an object proximate to the holographic image. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method of reproducing a holographic image comprising:
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providing a hologram recorded with an angle of reconstruction greater than about 45 degrees and less than about 90 degrees; and directing light toward the hologram at the angle of reconstruction. - View Dependent Claims (33, 34, 35, 36, 37, 38)
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39. A method of recording an object image of a first hologram as a second hologram, comprising the steps of:
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providing a first hologram recorded at a first angle of reconstruction; providing a holographic recording medium; directing an object beam through a surface of the first hologram at the first angle of reconstruction to reconstruct the object image on the holographic recording medium; striking the holographic recording medium with a reference beam at a second angle of reconstruction to form a wave interference pattern with the object beam, wherein the second angle of reconstruction is greater than about 45 degrees and less than about 90 degrees; and recording the wave interference pattern on the holographic recording medium.
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40. A system for reconstructing a hologram including:
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a hologram affixed to a medium, wherein the hologram has an angle of reconstruction greater than about 45 degrees and less than about 90 degrees; a reproducing light source positioned on one side of the hologram configured to direct light through the hologram at the angle of reconstruction to form a holographic image at a predetermined distance from the hologram on an opposite side of the hologram from the reproducing light source; and - View Dependent Claims (41, 42, 43, 44, 45)
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Specification