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. 25, 2003
Filed:
Jan. 22, 2001
Gordon D Henshall, Harlow, GB;
Stephen Rolt, Braughing Ware, GB;
Nortel Networks Limited, St. Laurent, CA;
Abstract
An optical switch has a plurality of input ports ( ) and a plurality of output ports ( ). Associated with each input port ( ) there is an input path IP followed by a free space beam exiting that input port ( ), and associated with each output port ( ) there is an output path OP followed by a free space beam entering that output port ( ). Located at each input path IP/output path OP intersection is mirror means If ( ) comprising a main mirror ( ) actuatable to divert a beam from a corresponding input path IP to a corresponding output path OP and at least one back-up mirror ( ) for performing the same function as the main mirror ( ).