Method for generating control output for a position control loop
CA 2398540 C · Owner: Kaplan, Roland · Inventors: Wijnaendts-Van-Resandt, Roelof; Vogler, Sven; Weikert, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for optically detecting the position of a moveable test object (10), especially a mirror or reflector. A measuring beam (6) that is produced by means of a light source (2) is reflected by the test object (10) and reaches a position-sensitive light detector (12) which carries out a conversion into information corresponding to the position of the test object (10). The aim of the invention is to improve said method in such a way that the position of mirrors, especially rotating mirrors can be quickly and , optically measured whereby the optical construction is simple. The measuring beam (6) is focussed onto the light detector (12) by means of an optical …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed January 18, 2001 and granted October 18, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 18, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 18, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.