Method for recording data on a lens and lens with recorded data
CA 2590002 C · Owner: Essilor International (Compagnie Generale D'Optique) · Inventors: Begon, Cedric
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The inventive method for recording data on an optical lens (2) consists in recording a data-containing source image in generating the hologram (3) of the image source and in recording said hologram on the lens surface portion ranging from 0.5 mm<SUP>2</SUP> to 15 mm<SUP>2</SUP>. The data can be readout by illuminating said lens by means of a light beam (101) in the hologram area. A read-out image (105 106) which reproduces the source image and on which data is readable is formed at a distance from the lens. Said lens can be embodied in particular in the form of an ophthalmic lens.
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 December 6, 2005 and granted November 24, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 6, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.