Image registering in color at low light intensity
CA 2102798 A1 · Owner: Johansson, Jonas · Inventors: Johansson, Jonas; Svanberg, Sune
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a combination of a focusing optics (11) for imaging a scene onto an image intensifier (11) and means as an ocular (16) for perceiving the intensified image of the scene a system of input, filters (12) obtains color separation in multiplex for feeding to a sole image intensifier (11). The multiplexed color separated intensified images are joined into a color image. In a system with time multiplexing, a filter disc (12) on the input side rotates in common with another filter disc (13) on the output side. In another system with space multiplexing the color separated images are , obtained by beam splitting side by side on the input surface of the image intensifier and are then combined …
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 May 13, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 13, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 13, 2014.
- 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.