Panoramic lens
CA 2127846 A1 · Owner: Powell, Ian · Inventors: Powell, Ian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A panoramic imaging system for projecting a 360 degree cylindrical field of view onto a two-dimensional annular format has a panoramic imaging block with a concentric axis of symmetry, two refractive surfaces and two reflective surfaces. The first reflective surface is a concave conicoid of revolution with the conic constant in the range from -0.6 to +2Ø In an embodiment of the invention, the second refractive surface (the last in the path of rays) is flat while the first reflective surface, the second reflective surface and the first refractive surface are all spherical.
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 12, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 12, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 12, 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.