SHUTTER DEVICE AND IMAGE CAPTURING DEVICE INCLUDING SHUTTER DEVICE Russian patent published in 2017 - IPC G03B9/08 

FIELD: physics.

SUBSTANCE: shutter device comprises a stepper motor configured to drive it in the non-feedback drive mode, in which the power supply state of the loop is switched at predetermined intervals and in the feedbac drive mode, in which the power supply state of the circuit is switched in accordance with the rotor rotation position; a slave element configured to drive it by means of the stepper motor; and a light-insulating element configured to be moved to the closed state, in which the aperture diaphragm is closed and to the open state, in which the aperture diaphragm is opened in accordance with the driving of the slave element. Herewith the slave element is configured to be driven in the first region, in which the slave element is driven by the stepper motor, but the light-insulating element remains in the closed or open state and in the second region, in which the slave element is driven by means of the stepper motor, and thus the light-insulating element moves from the closed state to the open state or from the open state to the closed state. Herewith the slave element is driven in the first region by means of the stepper motor in one direction, and after driving the slave element in the first region, the slave element is driven in the second region, in which, in case when the slave element is driven in the first region, the stepper motor drives the slave element in the non-feedback drive mode and in which, in case when the slave element is driven in the second region, the stepper motor drives the slave element in the feedback drive mode .

EFFECT: providing a shutter device, in which, in case when the stepper motor drives the slave element, whereby the light-insulating element moves from the closed state to the open state or from the open state to the closed state, the stepper motor does not lose synchronization.

8 cl, 17 dwg