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:
Apr. 05, 1983
Filed:
Jul. 03, 1980
Richard L Apothaker, Northfield, NJ (US);
Kontes Glass Company, Vineland, NJ (US);
Abstract
A fiberoptic head includes, for each channel, two separate illuminating fiberoptic bundles and a light receiving fiberoptic bundle. Each illuminating fiberoptic bundle has its input end adjacent a light source. The light receiving fiberoptic bundle has its output end adjacent to a light detector. A block is provided with first, second and third passageways terminating at separate elongated apertures at the operative surface thereof. Each bundle extends through a different one of the passageways with the illuminating bundles terminating at apertures spaced from either side of the aperture for the light receiving bundle. The exterior apertures are located such that the projected illumination patterns overlap on the zone on the test surface from which the receiving bundle gathers light. The numerical aperture of the fibers in the light receivig bundle is selected to be less than the numerical aperture of the fiber in the illuminating bundle to increase the resolution and perceive only the center of the overlapping patterns of illumination.