A ruticon is an opto-electronic device in which light going through it can be modulated by an electric field.
The intensity distribution of the resulting image can be precisely controlled. Ruticons are used as image storage devices and active light filters.
 N.K. Sheridon"The ruticon family of erasable image devices".
IEEE Transactions on Electron Devices
 Dorian Kermish, "Image formation mechanism in the γ-ruticon".
Applied Optics, Vol. 15, Issue 7, pp. 1775-1786 (1976)