Head-mounted image display apparatus
CA 2107607 C · Owner: Mizoguchi, Motoshi · Inventors: Ito, Masahiko; Mizoguchi, Motoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A head-mounted image display apparatus includes optical visual units mounted on a laterally disposed shaft and adjustable so as to be movable toward and away from each other for establishing a correct eye spacing for a user. LCD display panels are mounted within the optical visual units so as to be vertically movable while ocular lenses onto which images displayed by the LCDs are projected via an obliquely arranged mirror are positionally fixed relative the eyes of the user such that focus adjustment will not cause image dropout and so that focus and eye spacing may be established independently of each other. Sliders provided for effecting focus and eye spacing adjustment are mounted such …
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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 October 4, 1993 and granted December 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 4, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 4, 2015.
- 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.