Image pickup apparatus effective for reducing false operation due to static electricity
View Patent ↗An image pickup apparatus includes a metal body, a metallic lens barrel provided movably in an optical axis direction of an imaging optical system, and a metallic exterior casing having an opening that exposes the lens barrel from inside to outside the image pickup apparatus. The metal body includes a cut-and-raised portion formed by cutting and raising a part of the metal body, and the cut-and-raised portion is electrically connected with the exterior casing or inductively coupled with the exterior casing. The cut-and-raised portion is formed to electrically discharge the lens barrel charged with static electricity via a discharge path including the cut-and-raised portion. A static electrical current generated in the lens barrel flows to ground via the discharge path including the exterior casing, the cut-and-raised portion and the metal body, without flowing via any electric substrate, to discharge a charged lens barrel.
1. An image pickup apparatus comprising:
a metal body;
a metallic lens barrel provided movably in an optical axis direction of an imaging optical system; and
a metallic exterior casing having an opening that exposes the lens barrel from inside to outside the image pickup apparatus,
wherein the metal body comprises a cut-and-raised portion formed by cutting and raising a part of the metal body,
wherein the cut-and-raised portion is electrically connected with the exterior casing or inductively coupled with the exterior casing,
wherein the cut-and-raised portion is formed to electrically discharge the lens barrel charged with static electricity via a discharge path including the cut-and-raised portion, and
wherein a static electrical current generated in the lens barrel flows to ground via the discharge path including the exterior casing, the cut-and-raised portion and the metal body, without flowing via any electric substrate, thereby discharging a charged lens barrel.
2. An image pickup apparatus comprising:
a metal body;
a metallic lens barrel provided movably in an optical axis direction of an imaging optical system; and
a metallic exterior casing having an opening that exposes the lens barrel from inside to outside the image pickup apparatus,
wherein the metal body comprises a cut-and-raised portion formed by cutting and raising a part of the metal body,
wherein the exterior casing comprises a metallic lens-decorative ring mounted in the opening,
wherein the cut-and-raised portion is electrically connected with the lens-decorative ring or inductively coupled with the lens-decorative ring, and
wherein a static electrical current generated in the lens barrel flows to ground via a discharge path including the lens-decorative ring, the cut-and-raised portion and the metal body, without flowing via any electric substrate, thereby discharging a charged lens barrel.
3. An image pickup apparatus comprising:
a metal body;
a metallic lens barrel provided movably in an optical axis direction of an imaging optical system;
a metallic exterior casing having an opening that exposes the lens barrel from inside to outside the image pickup apparatus; and
a metallic lens barrel frame that fixes the lens barrel on a main body of the image pickup apparatus,
wherein the metal body comprises a cut-and-raised portion formed by cutting and raising a part of the metal body,
wherein the cut-and-raised portion is electrically connected with the lens barrel frame or inductively coupled with the lens barrel frame, and
wherein a static electrical current generated in the lens barrel flows to ground via a discharge path including the lens barrel frame, the cut-and-raised portion and the metal body, without flowing via any electric substrate, thereby discharging a charged lens barrel.
4. The image pickup apparatus as claimed in claim 1 ,
wherein the image pickup apparatus comprises a flexible cable, and the flexible cable is separated so as not to be inductively coupled with the metal body.
5. The image pickup apparatus as claimed in claim 2 ,
wherein the image pickup apparatus comprises a flexible cable, and the flexible cable is separated so as not to be inductively coupled with the metal body.
6. The image pickup apparatus as claimed in claim 3 ,
wherein the image pickup apparatus comprises a flexible cable, and the flexible cable is separated so as not to be inductively coupled with the metal body.
7. The image pickup apparatus as claimed in claim 4 ,
wherein the flexible cable is separated so as not to face the metal body.
8. The image pickup apparatus as claimed in claim 5 ,
wherein the flexible cable is separated so as not to face the metal body.
9. The image pickup apparatus as claimed in claim 6 ,
wherein the flexible cable is separated so as not to face the metal body.
10. The image pickup apparatus as claimed in claim 1 ,
wherein the metal body is a metallic battery casing that houses a battery.
11. The image pickup apparatus as claimed in claim 2 ,
wherein the metal body is a metallic battery casing that houses a battery.
12. The image pickup apparatus as claimed in claim 3 ,
wherein the metal body is a metallic battery casing that houses a battery.
13. The image pickup apparatus as claimed in claim 1 ,
wherein the cut-and-raised portion is formed by a part of the metal body located on a side of the lens barrel.
14. The image pickup apparatus as claimed in claim 2 ,
wherein the cut-and-raised portion is formed by a part of the metal body located on a side of the lens barrel.
15. The image pickup apparatus as claimed in claim 3 ,
wherein the cut-and-raised portion is formed by a part of the metal body located on a side of the lens barrel.