Illumination device and illumination method
CA 2482005 C · Owner: Panasonic Corporation · Inventors: Shimaoka, Yusaku; Yoshikawa, Takamasa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an illumination optical system using plural light sources, to provide an illumination device with high efficiency of use of light. An illumination device which includes plural lamps 1 and 1', a prism 4, a first lens array 10 and a second , lens array 12, wherein the first lens array 10 is formed such that images of the lamps 1 and 1' are formed a predetermined space apart from each other on a lens 11 which corresponds to a predetermined lens 9 among the plural lenses 11 of the second lens array 12 by light , from the lamps 1 and 1' having passed the predetermined lens 9 of the first lens array 10, and all or a part of plural images formed by a lens 9' separate from the …
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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 9, 2003 and granted March 20, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 9, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2025.
- 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.