Methods and apparatus for making holograms including multiple two-dimensional images
Patent 6151143 Issued on November 21, 2000. Estimated Expiration Date: 
November 4, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 4, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3542449 3560210 3594060 3614426 3615123 3774986 3838903 3890041 Light filtering arrangement for holographic displays Layer-wise reproduction of three-dimensional objects by simultaneous super-position of encoded images InventorAssigneeApplicationNo. 963789 filed on 11/04/1997US Classes:359/35, Hardware for producing a hologram359/1, HOLOGRAPHIC SYSTEM OR ELEMENT359/22, For producing or reconstructing images from multiple holograms (e.g., color, etc.)359/23, Holographic stereogram359/24, Superimposed holograms only359/30Having optical element between object and recording mediumExaminersPrimary: Henry, Jon W.Attorney, Agent or FirmForeign Patent References
International ClassG03H 001/04AbstractA method and apparatus for making holograms includes a technique for exposing a film substrate or other light-sensitive medium to consecutive two dimensional images, together representative of a physical three-dimensional system, to generate a three dimensional hologram of the physical system. Low beam ratios are employed to superimpose multiple (20-300) images on the substrate. Each image is relatively weak, but the combination of the series of weak images ultimately appears as a single clearly defined hologram.Other References
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