Reflectivity mirrors and transversely variable transmission apertures with an azimuthal symmetry
CA 1298724 C · Owner: Lavigne, Pierre · Inventors: Lavigne, Pierre; Mccarthy, Nathalie
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A variable reflectivity mirror or aperture comprising an AR-, coated transparent substrate and a thin shaped layer of a highrefractive-indexed dielectric on the substrate to provide a reflective surface is formed by depositing thin layer of predetermined radial profile of a high-refractive-index dielectric onto the substrate.
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
- Granted April 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 2009.
- 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.