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:
Dec. 30, 2008
Filed:
Sep. 14, 2005
Boon Keat Tan, Penang, MY;
Kheng Hin Toh, Penang, MY;
Susan Hunter, Fort Collins, CO (US);
Avago Technologies ECBU IP (Singapore) Pte. Ltd., Singapore, SG;
Abstract
In one embodiment, an optical encoder includes a code member, a light source, and a detector array. The code member has a plurality of reflectors thereon; and the light source is positioned to illuminate an area of the code member that includes at least one of the reflectors. The detector array includes at least one detector set, each of which includes a plurality of detector elements. The code member and the detector array are moveable with respect to one another along a displacement direction, and as the code member moves with respect to the detector array, the reflectors on the code member reflect light emitted by the light source to produce circular or elliptical light spots that travel across the detector array.