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:
Oct. 05, 2004
Filed:
Sep. 26, 2003
Steven John Horton, West Midlands, GB;
Abstract
An optical displacement senor includes a source of optical radiation, a two-dimensional array of radiation detectors, and at least one modulating element disposed between the source and detector. The modulating element has alternating first and second modulating regions circumfrentially spaced around a central axis thereof. The modulating element is displacement relative to the array of detectors so that the detector array forms a two-dimensional image of the first and second regions of the modulating element of array. A data processor is connected to the detector array and is adapted to indentify the orientation of at least two different radially extending edges of regions on the modulating element from the two-dimensional image and also to determine the position of the centre of the element from the determined orientation of the edges.