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. 02, 1998
Filed:
Feb. 14, 1997
Timothy P White, New Boston, NH (US);
Northeast Robotics, Inc., Weare, NH (US);
Abstract
An illumination device for illuminating an object to be observed, by a machine vision camera or the like for example, with a continuous diffuse wide angle light which is supplied along the observation axis of the machine vision camera. The diffuser is mounted parallel to the observation axis but separated from the beam splitter by a microlouver filter so that the microlouver filter prevents diffused light from the diffuser from directly illuminating any point of interest on the surface of the object to be observed. The microlouver filter only allows indirect illumination of the object to be observed by the diffuser and provides improved uniform illumination of the object to be observed.