Optical mirror and optical device using the same
CA 2095019 C · Owner: Mitsui Petrochemical Industries, Ltd. · Inventors: Eda, Akira
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A theme of the present invention is to provide an optical mirror and an optical device using the same in which the mirror is capable of reflecting a light beam having a plurality of wavelengths with the phase matching condition required for nonlinear optical materials being satisfied so that a decrease in, efficiency due to the phase difference does not generate even if harmonic generation, optical mixing or the like is performed thereby being capable of improving conversion efficiency. The optical mirror wherein a plurality of reflection films e.g. reflection multilayer films 2 and 3 are formed on an edge surface, of a transparent substrate (1) each of which films corresponds to, each …
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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 August 28, 1992 and granted April 20, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 28, 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.