Patent ID: 6760080
Filing Date: 2004-07-06
Classification: G02C,G02F

Abstract:
A light modulating cell assembly for use in eyewear to be worn over at least one eye of a user, comprising:(a) a closed looped frame adapted to be positioned over an eye of the user of the eyewear and a light modulating cell arrangement located within said frame and defining a closed looped edge substantially adjacent said closed looped shaped frame, said cell arrangement including at least one layer of a light modulating medium extending continuously within and to said edge so as to close the area within the frame, said cell arrangement being positionable in front of the eye of a user and configured so as to be able to vary the transmissivity of its continuously extending light modulating medium in a way which varies the transmissivity of light passing through the light modulating medium from the ambient surroundings before reaching the eye; (b) a light transmissivity control arrangement including a light detector for varying the transmissivity of the entire continuous extent of said light modulating medium at least in part, in response to and as an inverse function of the level of light reaching said detector from the ambient surroundings; and (c) a light blocking arrangement at least partially surrounding said detector for allowing only light from a limited range of ambient directions to directly reach said detector.