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:
Feb. 10, 2015
Filed:
Sep. 26, 2013
Applicant:
Taiwan Semiconductor Manufacturing Co., Ltd, Hsin-Chu, TW;
Inventors:
Assignee:
Taiwan Semiconductor Manufacturing Co., Ltd., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/00 (2006.01); G01N 21/55 (2014.01);
U.S. Cl.
CPC ...
G01N 21/55 (2013.01);
Abstract
Embodiments of mechanisms of an optical inspection system for inspecting an object are provided. The optical inspection system includes a light source emitting a coherent beam having a first width, and a beam expander increasing the first width to a second width. The optical inspection system also includes an polaroid module adjacent to the beam expander and polarizing the coherent beam. The object generates an inspection beam with an interference pattern by reflecting the polarized coherent beam. The optical inspection system further includes an image module capturing the inspection beam.