Eyewear control system and method, and an eyewear device

An eyewear device comprising:

• a lens;
• a variable transmittance optical filter assembly comprising a pair of terminals and an optical filter electrically coupled to the pair of terminals, wherein the variable transmittance optical filter assembly covers at least a portion of the lens, and wherein the optical filter is a hybrid photochromic-electrochromic optical filter;
• and
• an eyewear control system for the variable transmittance optical filter assembly, the eyewear control system comprising:
• (a) a controller communicatively coupled to a pair of load terminals for electrically coupling to the pair of terminals of the optical filter assembly;
• (b) a light sensor communicatively coupled to the controller to provide a detector output signal, the light sensor being positioned to receive sunlight transmitted through the optical filter assembly and towards an eye of a person when wearing the eyewear device, the detector output signal being set in dependence on an amount of sunlight received by the light sensor;
• and
• (c) a memory communicatively coupled to the controller and having encoded thereon computer program code executable by the controller to transition the optical filter assembly between operating states,
• wherein the controller varies a voltage across the load terminals in dependence on the detector output signal to vary an amount of sunlight transmitted through the optical filter assembly.