Patent ID: 8169536

Claim:
An optical imaging device, comprising: an input unit, adapted to receive lens category information that is inputted; a storage unit, adapted to store at least one lens control model; a control unit, adapted to select, according to the lens category information that is inputted from the input unit, a corresponding lens control model from the storage unit, and to apply to a lens a control signal which control signal corresponds to a current status of the lens; and a lens control circuit adapted to convert the control signal provided from the control unit into a control voltage used for controlling the lens, wherein the control signal comprises a voltage offset and a stop reference signal, and the lens control circuit comprises: a first digital-to-analog conversion unit, adapted to convert a digital signal of the stop reference signal into an analog signal; a second digital-to-analog conversion unit, adapted to convert a digital signal of the voltage offset into an analog signal; and a first amplifier, adapted to perform operation amplification for the analog values of the stop reference signal and the voltage offset signal, and to output the control voltage.