Patent ID: 7230598
Filing Date: 2007-06-12
Classification: G02F,H04N

Abstract:
1. An electrical dimmer device including a liquid crystal whose light transmissivity is controlled by an energy of an electric signal supplied thereto, the device comprising driving means for varying the energy of the electric signal that controls the light transmissivity of the liquid crystald, and operation signal receiving means for receiving an operation signal for a stop adjustment, wherein, when the operation signal for a stop adjustment is received, the driving means varies the energy of the electric signal according to a current value and a received value of the operation signal for the stop adjustment, and wherein, when the light transmissivity is changed from its current value to a desired value, the driving means varies the energy of the electric signal to a greater extent than a change width corresponding to the change of the light transmissivity for a predetermined time before varying the energy to that corresponding to the desired value of the light transmissivity.