Method for controlling an optical characteristic of a material a

Details Method for controlling an optical characteristic of a material a Method for controlling an optical characteristic of a material a

1975-01-28

1976-12-07

Corbin, John K.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340336, 340324M, G08B 536, G02F 118

Patent

active

039959392

ABSTRACT:
A method for controlling an optical characteristic of a material which is intercalated between two electrodes driven by periodic excitation signals having a zero mean value consists in applying to the electrodes signals having the same time-duration and the same recurrence frequency but in which one signal has a phase shift .phi. with respect to the other, the phase shift being modified in order to adjust the optical characteristic.

REFERENCES:
patent: 3877016 (1975-04-01), Jorgensen
Ohtsuka, T., Tsukamoto, Tsuchiya, Tsuchiya M., "Liquid Crystal Matrix Display", Japanese Journal of Applied Physics, vol. 12, No. 3, Mar. 1973, pp. 371-378.
Lechner, B. J., Marlowe, F. J., Nestor, E. O., Tults, J., "Liquid Crystal Matrix Display", Proceedings of the IEEE, vol. 59, Nov. 1971, pp. 1566-1579.
Labrunie, G., Robert, J., Borel, J., "Nematic Liquid Crystal 1024 Bits Page Composer", Applied Optics, vol. 13, No. 6, June 1974, pp. 1355-1358.

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