Device for optical free space transmission systems
CA 2244070 A1 · Owner: Czichy, Reinhard Hanno · Inventors: Fischer, Edgar; Czichy, Reinhard Hanno; Sanvido, Saverio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Devices for optical message transmission in free space are optimized for the respective use, in particular for operation in a satellite. The described device is intended for employment in satellites for covering distances of several thousands of kilometers, wherein a large number of devices is operated simultaneously withoutessential mutual coverage of the detection range. This is achieved by means of arecessed embodiment of a telescope (2) and the arrangement in the manner of a periscope of only a single, level mirror which can be rotated around two axes and is used for rough alignment. A diffractive optical element optimizes the illumination of the aperture, while leaving the surface …
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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 9, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 9, 2020.
- 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.