The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 22, 2019
Filed:
Jan. 26, 2017
Switch Materials, Inc., Burnaby, CA;
Neil Robin Branda, Burnaby, CA;
Glen Ramsay Bremner, Burnaby, CA;
Jeremy Graham Finden, Burnaby, CA;
Corbin Abe Giesbrecht, Burnaby, CA;
Duhane Lam, Burnaby, CA;
Matt Andrew Pilapil, Burnaby, CA;
Matthew Paul Smit, Burnaby, CA;
SWITCH MATERIALS, INC., Burnaby, British Columbia, CA;
Abstract
A control system for a variable transmittance optical filter assembly includes a controller in communicatively coupled to a pair of load terminals, and a memory communicatively coupled to the controller and having encoded thereon statements and instructions executable by the controller to transition the optical filter assembly between operating states when coupled to the pair of load terminals. The controller is operable to perform any one or more of: allowing the optical filter assembly to transition to a dark state by shorting the load terminals together, maintaining the optical filter assembly in a hold mode by applying a pulse width modulated voltage signal across the load terminals, and transitioning the optical filter assembly between operative states by applying a voltage signal having voltage pulses of opposite polarities to the load terminals.