Patent ID: 7891890
Filing Date: 2011-02-22
Classification: G03B

Abstract:
1. A shutter device comprising: a first shutter blade having conductivity; a second shutter blade having conductivity; a shutter base plate rotatably supporting the first and second shutter blades; a partition plate arranged between the first and second shutter blades supported by the shutter base plate, the partition plate having conductivity; and a cover plate fixed to the shutter base plate while the first and second shutter blades are supported by the shutter base plate and the partition plate is arranged between the first and second shutter blades, the cover plate having conductivity, the cover plate electrically connected to the partition plate, the cover plate having a potential at a ground level, wherein the shutter base plate includes a first protrusion and the cover plate includes a second protrusion, the partition plate pinched between the first and second protrusions.