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:
Jun. 04, 2013
Filed:
Oct. 11, 2007
Brian John Edward Smith, Dursley, GB;
Richard William Bormett, Cherry Valley, IL (US);
Brian John Edward Smith, Dursley, GB;
Richard William Bormett, Cherry Valley, IL (US);
Renishaw PLC, Wotton-Under-Edge, GB;
Abstract
A Raman spectroscopy system has a filter arrangement comprising two filters (A) in series, to reject light of the illuminating wavenumber from the scattered light of interest. The filters are tilted and have different characteristics for light of first and second different polarisation states. To counter this, the filters are arranged so that their respective effects on the respective polarisation states at least partially cancel each other out. This may for example be done by arranging their tilt axes () orthogonally to each other.