Ocular biometer
CA 2377162 A1 · Owner: Amt Technologies, Corp. · Inventors: Horwitz, Larry S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ocular biometer utilizing a light emitting source (7) and corresponding optics to illuminate areas of the eye in order to analyze the wavefront of the reflected light. Aperture sharing elements such as "hot mirrors" (4) are used , to allow the eyes (1) to view the world as the ocular biometer measures , various characteristics of the eye such as the refractive (i.e. accommodative) state the gaze angle and the pupil diameter at any instant of time and continuously. Optical wavefront conditioning and wavefront sensing techniques are used to determine the refractive power of the eye and the instantaneous accommodative state. Reflected light is projected through a reticle (26) or …
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 July 27, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 27, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 2021.
- 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.