Electro-optical modulator/deflector
CA 1089067 A · Owner: Xerox Corporation · Inventors: Ramachandran, Visagaperuman; Palmer, Andrew W.; Scibor-Rylski, Marek T. V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure An improved electro-optical modulator includes electro-optical material and an electrode pattern that is arranged in response to a voltage supply to provide an electric field in the material to influence the deflection of a light beam. The electrode pattern is non-symmetrical. The beam thus can be selectively deflected in sense and in quantity to one or more of its higher energy orders according to the sense and value of the voltage supply. This is in contrast to prior art arrangements where usually only the first order is utilized, eg, in a cascadable electro-optic switch, so energy is uselessly dissipated in the second and higher orders.
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 November 4, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 4, 1997.
- 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.