The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 1991
Filed:
Sep. 20, 1989
Gunther Dausmann, Erding, DE;
Other;
Abstract
In a method of taking and reproducing photographs in which a hologram in the substrate of the photograph is superposed on the photograph and is produced, e.g., by the Lippmann-Bragg process by an object beam and a reference beam from the same light source, the object beam containing amplitude information corresponding to the photograph in such a manner that a corresponding image is formed at the same time on the substrate which corresponds to the hologram plane, and the aperture stop of image-forming optical system contains the object to be represented by the hologram. An optical phase modulator for producing a predetermined set of phase disturbances is provided between the aperture stop and the hologram plane.