Light collimating device
CA 2579439 C · Owner: Rambus International Ltd. · Inventors: Lash, Thomas E.; Lubart, Neil D.; Wojciechowski, Timothy J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A collimating device and a transflector for use in a system having a backlight is disclosed herein. In one embodiment of the application the collimating , device and the transflector each include an immersing layer a reflecting , layer, and an optical element layer formed from a plurality of threedimensional, optical elements. Each optical element is tapered such that a small area end has a horizontal plane cross sectional area that is less than that of a wide area end. The optical elements of the collimating device are tapered towards the backlight and the optical elements of the transflector are tapered away from the backlight. The reflecting layer has apertures which correspond to …
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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 August 9, 2005 and granted July 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 9, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.