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:
Dec. 13, 2005
Filed:
Mar. 05, 1999
Applicants:
Alan H Greenaway, Malvern, GB;
Paul M Blanchard, Malvern, GB;
Inventors:
Alan H Greenaway, Malvern, GB;
Paul M Blanchard, Malvern, GB;
Assignee:
QinetiQ Limited, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B027/44 ;
U.S. Cl.
CPC ...
Abstract
A three-dimensional imaging system is described which exploits the defocusing of non-zero diffraction order images caused by the quadratic distortion of a diffraction grating (). An optical system () is used such that objects (and), located at different distances from grating (), are imaged simultaneously and spatially separated on a single plane B.