Patent ID: 9182650
Filing Date: 2015-11-10
Classification: G03B,H04N

Abstract:
1. An action control device, comprising: a transmittance specifying unit configured to specify a transmittance of a variable-transmittance neutral density (ND) filter having a transmittance that varies according to an applied voltage; and an applied voltage control unit configured to control a voltage to be applied to the variable-transmittance ND filter such that the transmittance specified by the transmittance specifying unit is obtained; wherein the applied voltage control unit controls the voltage to be applied to the variable-transmittance ND filter such that the transmittance of the variable-transmittance ND filter specified by the transmittance specifying unit is maintained at a timing at which an imaging preparation instruction or an imaging instruction is given; and wherein the transmittance specifying unit specifies a transmittance corresponding to an elapsed time that has elapsed until the imaging instruction is given after the applied voltage control unit starts to apply the applied voltage to the variable-transmittance ND filter.