Australian TV has a piece about LiveLens, a patented ‘active’ electro-optical filter providing a WDR solution for cameras. The LiveLens combines liquid crystal on silicon (LCoS) technology with image sensor, where the liquid crystal controls its local transparency based on the local illumination level at the sensor plane. A picture from the company site explains the idea:
Live Technologies, the company behind LiveLens idea, has manufactured an 1MP prototype sensor on X-FAB. Then the liquid crystal assembly was done at Liquid Crystal Institute Advanced Materials Department, Kent State University, Ohio. Now the company demos WDR imaging results on its web site. The company has US patent 5,953,082 on its technology.