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. 26, 1984
Filed:
Jun. 01, 1981
James A Arns, Culver City, CA (US);
Timothy J Edwards, Hermosa Beach, CA (US);
Gaylord E Moss, Marina del Rey, CA (US);
John E Wreede, Monrovia, CA (US);
Hughes Aircraft Company, El Segundo, CA (US);
Abstract
The hologram forming systems of the invention form diffusion type holograms in which undesired spurious transmission hologram recordings are eliminated. The reflecting surfaces are moved during the recording process so that the reflected rays change in phase relative to the primary recording beams and spurious holograms cannot be recorded with sufficient intensity to form undesired reflections in the developed hologram. Thus, pictorial type holograms such as jewelry holograms or art holograms do not present undesired ghost images or flare patterns to the viewer. The concepts of the invention also include formation of diffusion type holograms for high gain directional viewing screens.