04529275 is referenced by 145 patents and cites 2 patents.

A continuous change in color is provided in order to control the absorptance of an electrochromic layer. The quantities of charge to be fed and removed by two sources of constant current are measured with a forward/backward counter. For decoloring processes, smaller amounts of charge are removed from the layer than are supplied to it for corresponding coloring processes. The quantities of charge removal for decoloring processes are, however, slightly greater than the quantities of charge which are theoretically necessary to obtain intermediate values with exactly the same absorptance, thereby assuring against destruction of the layer, even in case of numerous changes between different colorings. Preferred fields of use are lenses, particularly eyeglass lenses, filters and dimmable mirrors, using an applied electrochromic layer whose absorptance is varied.

Title
Continuous charge control for electrochromic layers
Application Number
6/436172
Publication Number
4529275
Application Date
October 22, 1982
Publication Date
July 16, 1985
Inventor
Horst Ballmer
Heidenheim
DE
Agent
Hopgood Calimafde Kalil Blaustein & Judlowe
Assignee
Carl Zeiss Stiftung
DE
IPC
G02F 1/03
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