Hologram recording sheet holographic optical element using said sheet and its production process
Patent 6340540 Issued on January 22, 2002. Estimated Expiration Date: 
June 29, 2020. 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.
June 29, 2020. 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 2698794 3442566 3567305 3849138 3920862 Holographic method for forming color holograms Holographic article and process for making same Multicolor hologram and method for forming same Process for the production of a laminar article and such article containing information in a hydrophilic colloid stratum Multi-faceted holographic optical element and methods of making and using same InventorsAssigneeApplicationNo. 606311 filed on 06/29/2000US Classes:430/1, HOLOGRAPHIC PROCESS, COMPOSITION, OR PRODUCT359/3, Having particular recording medium359/25, Discrete hologram only359/26, Sequential frames on moving film430/2, Composition or product or process of making the same430/7ColorExaminersPrimary: Angebranndt, MartinAttorney, Agent or FirmForeign Patent References
International ClassesG03H 001/04G03H 001/30 Foreign Application Priority Data1992-11-27 JPAbstractThe hologram recording sheet according to the invention is made up of a base film and hologram sensitive materials sensitive to different wavelength regions formed therein in a desired pattern, or a film and at least two hologram recording sensitive materials sensitive to different wavelength regions laminated on the film with a transparent plastic spacer layer located therebetween, thereby enabling the required diffraction light wavelengths to be recorded on the required sites without producing unnecessary interference fringes. At least two hologram recording sensitive materials sensitive to different wavelength regions are formed on different sites on a film in dotted or striped configuration, the size of which is up to 200 mm or at least twice as large as the thickness of the sensitive material layers, thereby enabling regions diffracting light of different wavelengths to be formed in the form of independent sets of interference fringes.Other References
Field of SearchHOLOGRAPHIC PROCESS, COMPOSITION, OR PRODUCTComposition or product or process of making the same LASER BEAM Copying by holographic means Having particular recording medium For producing or reconstructing images from multiple holograms (e.g., color, etc.) Holographic stereogram Discrete hologram only |
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