Patent ID: 7577344

Claim:
A light-shielding device which is attachable to an illuminating device for oral photography, said light-shielding device comprising: a light-shielding surface that shields illuminating light emitted by said illuminating device; and a light-transmitting member that transmits said illuminating light emitted by said illuminating device, and that has a light-transmitting surface having an arc shape, in order to exclusively illuminate a periphery of a mouth of a person being photographed, wherein said illuminating device is connected to a lens barrel provided on a camera, said light-shielding device is terraced in a direction parallel to an optical axis of said lens barrel, said light-shielding surface is recessed to prevent the light-shielding device from interfering with a nose of the person being photographed, said light-shielding device attaches to a light-emitting surface of the illuminating device, and a distance between the light-shielding surface and the light-emitting surface of the illuminating device in an axial direction of the lens barrel is smaller than a distance between the light-transmitting surface of the light-transmitting member and the light-emitting surface of the illuminating device in the axial direction of the lens barrel.