US Patent 7511807 Method and apparatus for detection of inclusion in glass

Patent 7511807 was granted and assigned to Agency for Science, Technology and Research on March, 2009 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Agency for Science, Technology and Research

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

75118070

Patent Inventor Names

Tong Liu0

Ivan Reading0

Xiang Li0

Zhongping Fang0

Date of Patent

March 31, 2009

Patent Application Number

105849660

Date Filed

December 30, 2003

Patent Citations Received

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US Patent 11940383 Method and system for detecting inclusions in float glass based on spectral reflectance analysis

Patent Primary Examiner

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L. G. Lauchman

Patent abstract

Inclusions in a transparent panel (5) are detected by placing a light transmissive interface (3) in contact with the panel (5), and transmitting a beam of light (1) through interface (3) into panel (5). Within the panel (5), the light beam (7) propagates along a path including total internal reflections at surfaces of panel (5). When the light beam (1) intercepts inclusions (10) or other defects at least some of it is scattered, and leaves the panel (5). This scattered light is then observed. Thus, a large zone of the panel (5) can be inspected, with light only being detected in the case that it arises from scattering by inclusions or other defects.