"As an example, the Japanese Laid-open Patent Application No. 52-54455, corresponding to the British Pat. No. 1,563,929, discloses eyeglasses in which an electrochromic device is formed on the lens by laminating, in succession, a transparent electrode (cathode) layer, a tungsten trioxide (WO3) layer, an insulating layer such as of silicon dioxide, and a transparent electrode (anode) layer." . . . .