Method and apparatus for optical shape measurement of oblong objects
CA 2176820 A1 · Owner: Koskenohi, Kimmo · Inventors: Koskenohi, Kimmo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
According to the present method of optical measurement of shape of oblong objects a reflector with a light source in front of it is placed to the opposite side of the object relative to the camera. The reflector is provided with a cross section shaped so that the rays emitted by the light source and reflected from a mirror converge at a focal point. The camera is placed to this point or an optically equivalent point, whereby the rays emitted by the light source and reflected from the mirror are aimed to enter the lens of the camera. According to the most advantageous embodiment of the invention to the opposite side of the object relative to the camera is placed an elliptical reflector …
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 November 10, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 10, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 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.