Beam shaper
CA 2431253 C · Owner: Hatjasalo, Leo · Inventors: Hatjasalo, Leo; Rinko, Kari
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a beam shaper which is intended for use in , connection with a quasi-monochromatic light source (1) and which is fabricatedf rom a substantially transparent material as a transmission element (3) guiding the propagation of light for rounding making elliptical, collimating, diverging converging and/or for the like application of a light beam/beams (R). The beam shaper has its transmission element (3') guiding the light beam/beams (R) provided with a strucutre which at least partially consists of binary, surface relief type of diffractive patterns having local , grating periods thereof optimized with respect to longitudinal and transverse directions, as well as …
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 11, 2001 and granted August 9, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 11, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 2023.
- 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.