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. 24, 2009
Filed:
Apr. 14, 2006
Teong Swee Tan, Penang, MY;
Premkumar S. Ramachandr, Perak, MY;
Yee Loong Chin, Perak, MY;
Cheng Why Tan, Penang, MY;
Weng Fei Wong, Penang, MY;
Teong Swee Tan, Penang, MY;
Premkumar S. Ramachandr, Perak, MY;
Yee Loong Chin, Perak, MY;
Cheng Why Tan, Penang, MY;
Weng Fei Wong, Penang, MY;
Avago Technologies General IP (Singapore) Pte. Ltd., Singapore, SG;
Abstract
A reflection-based optical encoding apparatus for the detection of position and/or motion of a mechanical device includes an encoding medium having at least a first reflective portion, and an encoder housing having a light-emitting source and a light-detecting sensor embedded within, the encoder housing being placed in proximity to the encoding medium such that a functional light path can be established from the light-emitting source to the light-detecting sensor via the first reflective portion of the encoding medium. The encoder housing includes a first flat facet positioned between the light-emitting source and the encoding medium, the first flat facet having a first angle relative to a common geometric plane such that light passing from the light-emitting source to the encoding medium is refracted along a first angled path in a manner that the refracted light strikes a desired location of the encoding medium.