Methods and systems for laser calibration and eye tracker camera alignment
CA 2479783 C · Owner: Shimmick, John K. · Inventors: Shimmick, John K.; Somani, Seema; Yee, Kingman
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides methods systems, and apparatus (10) for , calibrating a laser ablation system such as an excimer laser system (11) for selectively ablating a cornea of a patient's eye. The invention also facilitates alignment of eye tracking cameras (36 38) that measure a position , of the eye during laser eye surgery. A calibration and alignment fixture (20) for a scanning laser beam delivery system (12) having eye tracking cameras (36, 38) may include a structure (20) positionable in a treatment plane. The structure (20) having a feature (28) directing laser energy incident thereon to a calibration energy sensor (22), at least one reference-edge (32 34) to , determine …
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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 April 22, 2003 and granted March 27, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 22, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.