Light-shielding device for oral photography
View Patent ↗An illuminating device is used for oral photography and is connectable to a lens barrel provided on a camera. The illuminating device includes a light-emitting surface that has an arc shape, so that a periphery of a mouth being under a nose of a person being photographed can be exclusively illuminated.
1. 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.
2. The light-shielding device according to claim 1 , wherein a first distance between said light-shielding surface and an attaching-surface of said light-shielding device is shorter than a second distance between said light-transmitting surface and said attaching-surface.
3. The light-shielding device according to claim 1 , wherein said light-transmitting member is transparent.
4. 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, said light-shielding surface being recessed to prevent said light-shielding device from interfering with a nose of a person being photographed; and
a light-transmitting member that transmits said illuminating light emitted by said illuminating device, and comprises a light-transmitting surface having an arc shape,
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 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.