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:
Feb. 16, 1988
Filed:
Dec. 20, 1985
International Business Machines Corporation, Armonk, NY (US);
Abstract
The waveguide comprises a transparent body having a very sharp point at one end and being coated with a first opaque layer, such as metal. The first opaque layer carries a layer of an optically transparent material which is covered, in turn, by a second opaque layer. The apex of the point has been removed so as to expose the transparent body through a first aperture and to expose the transparent layer through a second aperture, the first aperture occupying an area of less than 0.01 .mu.m.sup.2. Light enters the transparent body at its remote end and exits through the first aperture to illuminate an object. Reflected light from the object enters the transparent layer through the second aperture and is guided to a light detector for further processing.