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. 13, 1995
Filed:
Mar. 22, 1994
Kazuo Moriya, Ageo, JP;
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
Abstract
A defect estimating apparatus includes a laser radiating unit For obliquely radiating laser light on a surface to be observed of an object to be inspected, an observing unit for observing, through the surface to be observed, scattered light produced From internal defects or particles of the object by refracted light of the laser light, and observing scattered light or reflected light produced from flaws or particles on the surface by tile laser light, and a component separating unit for allowing the observing unit to perform observation by using both light containing primarily a p-polarized light component of the laser light and light containing primarily an s-polarized light component of the laser light.