Wavelength-variable light source
CA 2369851 A1 · Owner: Funakawa, Seiji · Inventors: Funakawa, Seiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Lenses 102, 103, and 104, a diffraction grating 105 a, mirror 106, a light isolator 107, an arm 108 a pulse motor, 109, and a pulse motor 110 operate in conjunction for mechanically roughly adjusting the wavelength of laser light generated by an LD 101, and the wavelength of user light generated by the LD 101 is electrically finely adjusted in a wavelength adjustment section 30.
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 January 31, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 31, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 31, 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.