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. 08, 2003
Filed:
Feb. 16, 2001
Gabriel Y. Sirat, Jerusalem, IL;
Yaacov Zerem, Jerusalem, IL;
Meny Shy, Aminadav, IL;
Valery Deich, Kiryat Arba, IL;
Optimet, Optical Metrology Ltd., Jerusalem, IL;
Abstract
An apparatus and method for enhancing the proportion of detected light that has been diffusely scattered by a surface light to light specularly reflected from the surface. A beam of light having a direction of predominant polarization is directed through a wedge module so as to illuminate the scene. The wedge module has two optically anisotropic wedges and an optical compensation plate. The polarization axes of the first and second wedges are substantially parallel to the direction of predominant polarization of the illuminating beam. Light scattered by the surface is detected through a polarizer.