Optical transmitter and transceiver module for wireless data transmission
CA 2197916 C · Owner: Richard, Heinz · Inventors: Gfeller, Fritz; Richard, Heinz; Weiss, Beat
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are optical transmitter and transceiver modules for data communication. Such a, transceiver module comprises an array of light emitting diodes mounted on a mounting base, being arranged in a regular and symmetrical manner in a dome-shaped housing. This housing, comprises diffusor means for source enlargement In addition to the , transmitter part consisting of said diodes, the transceiver module comprises a receiver. The receiver has four photodiodes, arranged below the mounting base. These photodiodes are tilted and face in different directions, to receive light from all around the module. The photodiodes are protected by a thin wire mesh, which serves as Faraday cage to …
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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 September 3, 1994 and granted December 10, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 3, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 3, 2016.
- 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.