Aperture control device and camera
AssigneeNikon Corporation
InventorMasaru Shida
Life of this patent
Estimating the term…
Abstract
An aperture control device includes: an aperture first driving member that controls an aperture of a diaphragm through which light flux passes; an aperture second driving member that drives the aperture first driving member; a motor that drives the aperture second driving member; a detection device that detects start of movement of the aperture first driving member caused by the aperture second driving member driven by the motor; and a motor control device that controls an aperture value of the diaphragm by controlling a rotational amount of the motor after the detection device detects the start of movement of the aperture first driving member.
Claims10
An aperture control device, comprising:
- an aperture first driving member that controls an aperture of a diaphragm through which light flux passes;
- an aperture second driving member that drives the aperture first driving member;
- a motor that drives the aperture second driving member;
- a detection device that detects start of movement of the aperture first driving member caused by the aperture second driving member driven by the motor;
- and
- a motor control device that controls an aperture value of the diaphragm by controlling a rotational amount of the motor after the detection device detects the start of movement of the aperture first driving member.
Dependencies are inferred from the claim text.