Acousto-optic tunable filter
CA 1285060 C · Owner: Rosemount Analytical Inc. · Inventors: Gottlieb, Milton; Ryan, Frederick Merk
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An acousto-optic tunable filter is modified in order to provide a minimum of resolution degradation when operated in a wavelength scan mode. A second face of the acousto-optic crystal opposite the first face on which the acoustic transducer is mounted is disposed so as to be non-parallel to the first face. As a result acoustic, waves launched into the acousto-optic crystal are reflected by the non-parallel second face resulting in the production of minimal diffraction of the light passing through the crystal by reflected acoustic waves.
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
- Granted June 18, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 18, 2008.
- 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.