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:
Jul. 24, 1984
Filed:
Sep. 16, 1982
Rand C Sherman, Upper Arlington, OH (US);
Richard P Kenan, Upper Arlington, OH (US);
Battelle Memorial Institute, Columbus, OH (US);
Abstract
A method of forming and reading a hologram, useful for instance as a lens, is disclosed which eliminates chromatic aberrations usually present when a hologram is recorded using light of a higher frequency than that for which the hologram is to be used on reconstruction. The fringes created by the interference of two beams of radiation at the recording frequency in a first medium are transferred to a recording second medium by virtue of the second medium having a surface contiguous to the fringes in the first medium. The second medium is then developed to produce a hologram. A reconstruction beam from a laser having a lower frequency than that of the recording beams is directed at a third medium which is contiguous to a surface of the hologram so as to cause the wavelength of the read-out beam to equal that of the recording beams.