Technique for depth of field viewing of images with improved clarity and contrast
CA 2175200 C · Owner: Loth, Stanislaw · Inventors: Loth, Stanislaw; Petitto, Tony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A screen is disclosed for, viewing depth of field images. The screen includes a curved prismatic screen mounted between, A flat image and a viewer. Additional optical elements may be provided to enlarge a viewed, image and strengthen depth information. A light hood may, be provided to reduce glare and other effects of ambient light. Further protection from ambient light may be provided by coating, the screen with an anti-reflective coating. Image quality for a video, image or the like is provided by restructuring the image into smaller, image elements. The present invention may find particular, application in medical and obstetric imaging such as sonograms, musculo-skeletal imaging …
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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 November 22, 1994 and granted April 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 22, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 2016.
- 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.