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. 29, 2003
Filed:
May. 31, 2001
Eiji Yonezawa, Aichi, JP;
Nidek Co., Ltd., Aichi, JP;
Abstract
A defect inspection apparatus for inspecting a presence of a defect on an object includes: a first input unit which inputs wavelength characteristics of each of a plurality of samples with wavelength variation of an illumination light for inspection; a second input unit which inputs inspection conditions which an inspector sets for each of the samples as a teaching signal; a third input unit which inputs a wavelength characteristic of the object with the wavelength variation of the illumination light; a neural network which learns and stores a relationship between the inputted wavelength characteristic of each sample and the inputted inspection condition for each sample, and determines an inspection condition for the object based on the inputted wavelength characteristic of the object and the learned relationship; and a defect detector which detects a defect of the object based on the determined inspection condition of the object.