Linear illumination
CA 2321942 A1 · Owner: Stockeryale (Irl) Limited · Inventors: Kelly, William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A linear illumination unit (30) has a line of unlensed LEDs (31) which emit light, spreading out. The light is focused into a line by a Fresnel lens (3.3) which allows, spread and mixing of light in the linear direction and limits spread in the orthogonal , direction. A Fresnel lens its particularly effective for this purpose. The housings 34, have slots 36 to help control light spread and the housings are open-ended to , allow spread of light in the linear direction beyond the confines of the geometry of the, units. Thus, units (30) may be interconnected to provide seamless linear light in a, modular manner.
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 October 2, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 2, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2022.
- 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.