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:
May. 01, 1984
Filed:
Jun. 06, 1980
Stephen A Benton, Somerville, MA (US);
Polaroid Corporation, Cambridge, MA (US);
Abstract
A method of making achromatic holographic stereograms in which projected images from a sequence of two-dimensional transparencies of a scene taken from a sequence of successively displaced positions are sequentially holographically recorded on adjacent strips of a photographic plate while the plate is inclined at an acute angle to the optical axis of projection of the images. The sequence of holographic strip images so recorded are re-recorded on a second hologram using a beam conjugate to the original reference beam to illuminate the strip hologram. The second holographic recording is done with the aid of a vertically inclined collimated reference beam of coherent light. Upon illumination of the second hologram with white light, a three-dimensional image of the original scene may be viewed by an appropriately placed observer which is achromatic over an extended angle of view and an extended apparent scene depth.