Device for coupling low numerical aperture light input into high numerical aperture optical instruments
CA 2338536 A1 · Owner: Brenner, Douglas M. · Inventors: Brenner, Douglas M.; Chen, Chingfa; Li, Kenneth K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An illumination system includes a light source and a tapered bundle of fused optical fibers (10) having a light input end (12) configured for receiving light, the light input end (12) having a first cross-sectional area (d1) and a first numerical aperture (na1), the tapered bundle (10) having an output end (16) configured for outputting light, the output end (16) having a second cross-sectional area (d2) and a second numerical aperture (na2). The bundle of fused optical fibers (10) is tapered between the input end (12) and the output end (16) such that there is a difference in size between the first and second cross-sectional areas, so that light exiting the output end (16) has a …
Read the whole patent
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 July 23, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 2021.
- 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.