Remote control light receiver
CA 1092400 A · Owner: The Magnavox Company · Inventors: Mierzwinski, Eugene P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A light receiving lens for a light activated television remote control system is disclosed. The lens has flat parallel sides flat divergent, top and bottom surfaces and a front surface of a modified cylindrical shape to provide a wide horizontal acceptance angle and a narrow vertical acceptance angle. A photodetector is located within the lens opposite the cylindrical surface. The top, bottom and sides may be coated with a reflective coating which is also electrically conductive to provide electrostatic shielding for the photodetector.
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 December 30, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 30, 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.