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:
Aug. 08, 1995
Filed:
Feb. 05, 1993
Howard Fein, Richmond Heights, OH (US);
Terry L Graves, Wadsworth, OH (US);
Pressco Technology, Inc., Solon, OH (US);
Abstract
A substantially isotropic illumination source utilizes a generally spherical, translucent diffuser. The spherical diffuser has an inner wall and a diffusive outer wall. Light is communicated inwardly to the sphere along a first hemisphere. Light is diffused and homogenized by internal reflection within the sphere and communicated outwardly through a complimentary hemisphere. This light, upon being diffused by the external or outer wall is substantially isotropic. The isotropic light so generated is utilized for video inspection of translucent specimens with improved contrast to facilitate detection of flaws therein. Another aspect utilizes a specimen itself as the isotropic diffuser.