Method and objective lens for spectrally modifying light for an electronic camera
CA 2326796 A1 · Owner: Panavision, Inc. · Inventors: Neil, Iain A.; Galt, John J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for modifying the spectrum of light rays passing through an objective lens to, an electronic camera that includes providing an interference type filter within the objective lens. The interference type filter may be a coating on a separate optical element added to the objective, lens or on a normal optical component of the objective lens. The interference filter coating is, located along the optical axis where the light rays are substantially collimated and have a, minimum light ray incidence angle with respect to the coating surface which , angle should not, exceed 15 degrees for any of the light rays passing therethrough.
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 November 22, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 22, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 2022.
- 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.