Electrochromic light regulator

DETAILED DESCRIPTION Accordingly, the present invention has as its essential object to provide an improved electrochromic light regulator which substantially avoids the disadvantages inherent in the conventional device of a similar kind.
Another important object of the present invention is to provide an improved electrochromic light regulator of the type referred to above which is satisfactory for control of light adapted to pass therethrough.
A further object of the present invention is to provide an improved electrochromic light regulator of the type referred to above, in which the response time for coloration is improved, the application of a relatively low voltage is enabled, the density of the colored portion is increased and unified, and areas which are unwillingly incapable of being colored are decreased or eliminated.
According to the present invention, there is provided an electrochromic light regulator utilizing the phenomenon of electrochromism in adjusting or regulating the amount of light passing therethrough.
The light regulator according to the preferred embodiments of the present invention comprises first, second and third electrode means stacked one above the other in a spaced manner.
A space between each adjacent pair of the first to third electrode means, for example, between the first and second electrode means and between the second and third electrode means, contains an electrochromic material and an ion conducting and electrically insulating layer.
The second electrode means which is positioned intermediately between the first and third electrode means serves as a counter electrode common to the first and third electrode means, which are electrically connected to each other, such that coloring can take place simultaneously between the first and second electrode means and between the second and third electrode means.