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:
Nov. 22, 1983
Filed:
Nov. 23, 1981
Peter Nicholson, Long Island City, NY (US);
Other;
Abstract
An apparatus and method for making holographic copies of film holograms via a contact copying process is disclosed. The apparatus comprises a tray having a clear flat bottom which receives the hologram master film, the blank film and a cover sheet. A pressure roller is provided to move across the cover sheet, to establish good optical contact between the films, in unison with and in alignment with a slit defining curtain being moved across the underside of the tray. A hologram reconstruction beam is beneath and aimed at the curtain so that light passes through the slit and duplicates onto the blank film only that part of the master hologram and film hologram subject to pressure from the pressure roller.