Display apparatus
CA 2005952 A1 · Owner: Iwai, Junichi · Inventors: Iwai, Junichi; Miyaoka, Senri; Nakane, Yasuaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An image display apparatus having light beam sources for generating light beams, an optical modulator for modulating the light beams by image signals to be projected a deflection device for deflecting the modulated light beams, the deflection device including a polygon mirror and an auxiliary reflection mirror provided near the polygon mirror for reflecting the modulated light beams from the polygon mirror toward the polygon mirror a device for, supplying the modulated light beams to the polygon mirror with predetermined angles relative to a rotational plane of the polygon mirror, thereby the modulated light beams incident upon the polygon mirror being reflected a plurality of times by the …
Read the whole patent
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 December 19, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 19, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 19, 2011.
- 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.