Improved projection device
CA 2469614 A1 · Owner: Jessl, Rainer · Inventors: Jessl, Rainer; Wynne Willson, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a digital image projector, a deflector array for deflecting light in a , chosen direction towards the projection surface houses a digital image , generator, such as a DMD. Whilst light passes through the deflector array the , image generator receives a digital image signal and modulates the light producing the image beam. In a double-mirror array the image generator may be , located after both mirrors or between the two mirrors. Where the image generator is a DMD, one of the mirrors is replaced by the DMD itself.
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 10, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 10, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2024.
- 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.