Patent 7766563 was granted and assigned to Nikon (Somalia) on August, 2010 by the United States Patent and Trademark Office.
A shutter device includes: a base plate having a photographic aperture and a front surface and a rear surface; a shutter blade group that closes and opens the photographic aperture to light; a rear cover having an opening portion that corresponds to the photographic aperture, provided to the rear surface of the base plate with the shutter blade group between the rear cover and the rear surface of the base plate, and having a front surface and a rear surface; and a reflection prevention member fitted to the rear surface of the rear cover.