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. 05, 2013
Filed:
Sep. 04, 2008
Stephen Mark Angood, Witney, GB;
Christopher Kemp, Wotton-under-Edge, GB;
Raymond John Chaney, Berkeley, GB;
Mark Adrian Vincent Chapman, Wotton-under-Edge, GB;
David Roberts Mcmurtry, Dursley, GB;
Stephen Mark Angood, Witney, GB;
Christopher Kemp, Wotton-under-Edge, GB;
Raymond John Chaney, Berkeley, GB;
Mark Adrian Vincent Chapman, Wotton-under-Edge, GB;
David Roberts McMurtry, Dursley, GB;
Renishaw PLC, Wotton-under-edge, GB;
Abstract
A rotation detection kit, comprising: a beam source; a receiver comprising at least one beam intensity sensor; a polarizer device for location in the path of a beam emitted from the beam source and received by the beam sensor; and a modulator. The modulator is configured to modulate at least one of i) the beam source and ii) a beam emitted by the beam source to create a discretely varying polarization orientation thereby defining first and at least second temporally spaced beam portions. The temporally spaced beam portions are incident on the polarizer device and the beam sensor and have substantially identical profiles and at least an initial common propagation axis toward the polarizer device.