Fiber optic switch having a curved reflector
CA 2071200 A1 · Owner: E. I. Du Pont De Nemours And Company · Inventors: Lee, Jerald Dana
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A switch (10) for controlling the transmission of light from a first optical fiber (F1) to at least at second optical fiber (F2) or from a single bidirectional optical fiber (F1) back to itself includes a housing (22) having a spherical concave reflector (40) mounted therewithin. Fiber mounting means (M) is provided for mounting optical fiber(s) at a predetermined location within the housing such that at least a portion of a beam of light emanating from the end face of one fiber propagates along an incidence path (52) toward the reflector from which it is reflected by the curved concave reflector along a predetermined reflectance path (54). A light interrupter (60) is mounted within the …
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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 December 7, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 7, 2012.
- 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
Timeline From CIPO dates
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.