Electrostatic actuator, shutter device, imaging module, and camera
AssigneeOlympus Corporation
InventorsKaoru Matsuki, Shinji Kaneko, Tsuyoshi Togawa, Sumio Kawai
Life of this patent
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Abstract
A shutter device comprising a fixed member which has a plurality of electrodes arranged on a surface, a light-transmitting region which is provided in the fixed member, a light-shielding member which is able to move between two positions where the light-transmitting region is closed and opened, respectively, and which have a plurality of electret parts, and a drive circuit which periodically applies a voltage to the electrodes provided on the fixed member, thereby to generate an electrostatic force acting on the electret parts of the light-shielding member and to drive the light-shielding member.
Claims6
A shutter device, which adjusts incident light in amount, comprising:
- a first fixed member and a second fixed member, each having a plurality of electrodes arranged on a surface;
- a first light-transmitting region and a second light-transmitting region, which are provided in the first fixed member and the second fixed member, respectively;
- a first light-shielding member and a second light-shielding member, each having a plurality of electret parts, the first light-shielding member being able to move between two positions where the first light-transmitting region is closed and opened, respectively, and the second light-shielding member being able to move between two positions where the second light-transmitting region is closed and opened, respectively;
- and
- a drive circuit which periodically applies a voltage to the electrodes provided on the first and second fixed members, thereby to generate an electrostatic force acting on the electret parts of the first light-shielding member and an electrostatic force acting on the electret parts of the second light-shielding member and to drive the first and second light-shielding members independently.
Dependencies are inferred from the claim text.