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. 12, 1990
Filed:
Jul. 20, 1988
Benjamin J Pernick, New York, NY (US);
John V Fine, Sr, Goose Creek, SC (US);
Grumman Aerospace Corporation, Bethpage, NY (US);
Abstract
An optical correlator system, comprising a laser to generate a signal beam, an image means located in the path of the signal beam to spatially modulate the signal beam, and first and second matched filters. A multiple beam generating holographic lens is located in the path of the modulated signal beam to partially transmit the signal beam and to deflect a first matrix of replicas of the signal beam onto the first matched filter. A mirror is located in the path of the partially transmitted signal beam to reflect that transmitted beam back to the holographic lens, which deflects a second matrix of replicas of the signal beam onto the second matched filter. With an alternate embodiment, a series of holographic lenses and beam splitters are alternatively arranged along the path of the signal beam. Each holographic lens generates two matrices of beams, with each matrix of beams being focused on an associated matched filter. Each beam splitter partially reflects the signal beam back to the preceding holographic lens, and partially transmits the signal beam to the following holographic lens.