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. 11, 2000
Filed:
Aug. 21, 1996
Yukihisa Osugi, Nagoya, JP;
NGK Insulators, Ltd., , JP;
Abstract
Object rays and reference rays are projected to record interference fringes on a volume hologram comprising a material exhibiting a photoinducing refractive effect, and a reconstructed image is obtained by illuminating the volume hologram with reconstruction rays. When the wavelength .lambda..sub.1 of the object rays is longer than the wavelength .lambda..sub.2 of the reconstruction rays, the reconstruction is conducted by illuminating the volume hologram with a convergent spherical wave and when the wavelength .lambda..sub.1 of the object rays is shorter than the wavelength .lambda..sub.2 of the reconstruction rays, the reconstruction is conducted by illuminating the volume hologram with a diffused spherical wave.