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. 24, 1980
Filed:
Dec. 26, 1978
Randall P James, San Francisco, CA (US);
David C Schmidt, San Francisco, CA (US);
Other;
Abstract
A system for making multiple copies of a hologram or multiple original holograms on successive segments of a continuous length of blank film is disclosed herein. In the former case, this system includes two support arrangements, one for maintaining the original hologram in a fixed planar position and the other for maintaining the successive segments of blank film in a fixed copying position behind the original. In this particular system, the original hologram is held in place between two light transparent support plates, a front plate and a back plate, with the aid of a refractive index matching liquid and each successive segment of blank film is located across the back plate and maintained in a fixed position laterally therefrom solely by means of a continuous layer of preselected liquid substance which, at the same time, functions as an index matching medium. In the latter case or making original holograms, the original hologram just recited and its means for support would not be used.