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:
Jul. 01, 2003
Filed:
Feb. 20, 2001
Hisashi Isozaki, Tokyo, JP;
Yutaka Shida, Tokyo, JP;
Kabushiki Kaisha Topcon, Tokyo, JP;
Abstract
A surface inspection apparatus includes a light source section for emitting first and second luminous fluxes; a first irradiation optical system which irradiates the first luminous flux on an inspected object at a first irradiation angle; a second irradiation optical system which irradiates the second luminous flux on an inspected object at a second irradiation angle; a light receiving optical system for receiving scattered light of the first and second luminous fluxes; first and second light receiving sections for converting the scattered light of the first and second luminous fluxes into first and second light receiving signals, respectively; a displacement section for relatively displacing an inspected object and an irradiation luminous flux of the irradiation optical system; and a discrimination section for discriminating the kind of inspection object based on the strength of the scattered light and the scattered range of the first and second light receiving signals.