Imaging System with Multi-Stop Aperture

A multistep electrochromic aperture comprising:

• a substrate comprising a central region formed from a transparent material;
• a lower outer ring electrode disposed to a first diameter;
• a dielectric ring disposed over the lower outer ring electrode;
• an upper outer ring electrode disposed over the dielectric ring and conductively decoupled from the lower outer ring electrode;
• an inner ring electrode disposed within, and circumscribed by, the upper outer ring electrode, the inner ring electrode conductively coupled to the lower outer ring electrode and coplanar with the upper outer ring electrode;
• an electrochromic stack disposed over the upper outer ring electrode and the inner ring electrode, the electrochromic stack comprising:
• an electrochromic counter electrode;
• an electrochromic ion conductor layer disposed over the electrochromic counter electrode;
• and
• an electrochromic material layer disposed over the ion conductor layer;
• and
• a common electrode disposed over the electrochromic layer.

An electronic device comprising:

• a housing;
• a camera module extending at least partially through the housing;
• and
• an electrochromic aperture disposed over an imaging sensor of the camera module, the electrochromic aperture comprising:
• a lower outer ring electrode disposed to a first diameter;
• a dielectric ring disposed over the lower outer ring electrode;
• an upper outer ring electrode disposed over the dielectric ring and conductively decoupled from the lower outer ring electrode;
• an inner ring electrode disposed within, and circumscribed by, the upper outer ring electrode, the inner ring electrode conductively coupled to the lower outer ring electrode and coplanar with the upper outer ring electrode;
• an electrochromic stack disposed over the upper outer ring electrode and the inner ring electrode;
• and
• a common electrode disposed over the electrochromic stack.