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:
Jun. 05, 1990
Filed:
Mar. 08, 1989
Applicant:
Inventors:
Arthur M Charlesworth, Ottawa, CA;
Harold F Pinkney, Nepean, CA;
Assignee:
Canadian Patents and Development Limited, Ottawa, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 93 ; 358475 ; 362 12 ; 362 13 ;
Abstract
A luminous source for illluminating targets in e.g. machine vision systems, remote manipulator systems used in outer space, etc., producing nearly constant target luminance as the target maintains various distances from the camera. This is achieved by the luminous source having a dual concentric ring shape of predetermined radii, intensity ratios and radial widths.