Augmented retinal display with view tracking and data positioning
CA 2312244 C · Owner: Johnston, Richard S. · Inventors: Johnston, Richard S.; Melville, Charles D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A scanned beam tracking system (32) is included in a virtual retinal display (10/50). An infrared light source (34/52) generates light for scanning the viewer's environment in the direction the viewer is looking. A visible light source (52) generates visible light which is scanned on a viewer's retina to generate a virtual image. A common scanning system (26) is used to scan both the non-visible light and the visible light. The visible light is directed into the viewer's eye. The non-visible light is directed away from the viewer's eye into the environment. Infrared reflectors (42) are positioned in the environment (40). When the infrared light from the virtual retinal display …
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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 January 13, 1999 and granted July 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 13, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 13, 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.