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. 06, 2004
Filed:
Dec. 18, 2001
Applicant:
Inventors:
Morteza Gharib, San Marino, CA (US);
Daniel W. Wilson, Glendale, CA (US);
Siamak Forouhar, Carlsbad, CA (US);
Richard E. Muller, Altadena, CA (US);
Dominique Fourguette, Pasadena, CA (US);
Darius Modarress, Pasadena, CA (US);
Frederic Taugwalder, Pasadena, CA (US);
Assignee:
California Institute of Technology, Pasadena, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 2/149 ;
U.S. Cl.
CPC ...
G01N 2/149 ;
Abstract
A diffractive optic sheer stress sensor operates by forming diverging fringes over a linear area of measurement. A diode laser focuses light onto a diffractive lens which focuses the light to respective slits. The slits form diverging fringes, and scattered light from the fringes is collected by a window and focused by another diffractive lens to a receiver.