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:
Mar. 12, 1991
Filed:
Nov. 14, 1988
Applicant:
Inventors:
Asher A Friesem, Rehovot, IL;
Yaakov Amitai, Rehovot, IL;
Assignees:
Yeda Research and Development Co. Ltd., Rehovot, IL;
The Weizman Institute of Science, Rehovot, IL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G03H / ; G03H / ;
U.S. Cl.
CPC ...
350-37 ; 350-375 ; 350-385 ;
Abstract
A method of producing a desired hologram for a holographic optical element for use in imaging a multi-dimensional array of points, in which two coherent recording beams are utilized to produce an interference pattern which is recorded to form the desired hologram, characterized in that one or both of the recording beams have an aspherical wavefront derived from one or more intermediate holograms each reconstructed by the use of a read out beam having a geometry and/or wavelength different from the beams for recording the respective intermediate hologram.