Method and device for detecting fundamental natural modes of vibration of an eye, by laser interferometry, and their use for measuring intraocular pressure
CA 2425173 A1 · Owner: Universite Des Sciences Et Technologies De Lille · Inventors: Dubois, Patrick; Elena, Pierre-Paul; Debut, Alexis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method which consists in: positioning the eye (3) relative to a detecting device (1) so as to form with said device a Fabry-Pérot cavity with main optical axis (A1) and comprising two opposite reflecting surfaces along the main optical axis (A1) one of the two surfaces being formed by a fixed reflective element (M1) and the other being formed by the cornea (2) of the eye; injecting in said Fabry-Pérot cavity an incident laser beam (F) centred on the main optical axis (A1) of the Fabry-Pérot cavity the lateral and longitudinal alignments of the cornea (2) relative to the main optical axis (A1) being produced so as to obtain longitudinal interferences between the …
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 October 9, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 9, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2023.
- 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.