Patent ID: 8189253
Filing Date: 2012-05-29
Classification: G03B

Abstract:
1. A shutter apparatus for intercepting an optical path, the shutter apparatus comprising: a plurality of shading plates each being pivotally supported by a corresponding one of a plurality of rotationally moving shafts so as to be capable of moving rotationally, an extending direction of the rotationally moving shafts being substantially orthogonal to the optical path; one drive source; and a power transmission mechanism that transmits driving force of the drive source to each of the shading plates such that each of the shading plates rotationally moves in different operation modes between a first stop position where each shading plate intercepts the optical path the most and a second stop position where each shading plate intercepts the optical path the least, wherein the optical path is substantially completely intercepted when all of the plurality of the shading plates are in the first stop position.