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:
Apr. 29, 2003
Filed:
Dec. 22, 1999
Philip Andrew Davies, Cambridge, GB;
Melles Griot Limited, London, GB;
Abstract
There is provided an apparatus for, and a method of, driving a plurality of uniaxial positioning elements of positioning stages to perform an automated search to find a signal in a multi-dimensional search space having a dimensionality equal to the number of alignment axes. The automated signal location is achieved by scanning over a search pattern defined by a succession of n−1 dimensional closed hyper-surfaces in an n-dimensional search-space, where n is the number of positioning axes involved in the alignment process. In an embodiment of the invention hyper-cubes are used as the hyper-surfaces and the search path follows a hyper-spiral track over hyper-surfaces of incrementally increasing size. One application is to align input and output optical fibers with a solid-state waveguide structure mounted on a plinth under the control of a positioner controller which outputs motion control signals for the positioning elements over control paths so as to scan over paths on a succession of nested hyper-surfaces until a signal is received through a signal line.