Method and device for generating retinal images using the stigmatism of the two foci of a substantially elliptical sight
CA 2556277 C · Owner: Laster · Inventors: Hamdani, Rachid; Liu, Zile
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for generating retinal images using the stigmatism of the two foci (F F') of a substantially elliptical sight (E) with a semi-reflective surface wherein a so-called object focus consisting of the diaphragm of a pinhole disc forming the convergence point of an image generated by a light-emitting display or a collimated light source is positioned adjacent to the first focus (F) of the substantially elliptical sight (E) a so-called imagefocus consisting of the pupil or the centre of the user's eye (OE) is positioned adjacent to the second focus (F') of said substantially elliptical sight (E) and the image generated by said light-emitting display or said collimated light source and …
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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 February 9, 2005 and granted October 4, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 9, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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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.