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:
Apr. 10, 1979
Filed:
Aug. 29, 1978
Applicant:
Inventors:
Thomas L Credelle, East Windsor, NJ (US);
William J Hannan, Palm Beach Gardens, FL (US);
Fred W Spong, Lawrenceville, NJ (US);
Assignee:
RCA Corp., New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
96-11 ; 96 2 / ; 346 / ; 358-2 ; 428172 ; 428913 ;
Abstract
A layer of thermally deformable plastic used, for example, in a holographic recording medium has an undulated surface whereby the layer has an uneven thickness. Because of the uneven thickness, the layer has a composite spatial frequency pass band greater than the spatial frequency pass band of a layer of uniform thickness.