Patent ID: 11857167
Assignee: OLYMPUS CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC A  G  H | IPC A  G  H

Claim 2:
3. An endoscope comprising:
a distal end portion comprising an image pickup unit, wherein the image pickup unit comprising:
a metal barrel holding an objective lens;
a substrate barrel fitted to a proximal end side of the metal barrel, the substrate barrel having an insulation property;
an image sensor disposed in the substrate barrel;
a plurality of electrodes penetrating the substrate barrel from an inside of the substrate barrel to a proximal end side of the substrate barrel, the plurality of electrodes being exposed on the inside of the substrate barrel to electrically connect the plurality of electrodes to the image sensor;
a first electric conductive member formed on an outer surface of the substrate barrel;
a ground electrode electrically connected to the first electric conductive member;
a second electric conductive member extending from a proximal end side of the metal barrel, the second electric conductive member being disposed on the substrate barrel, the second electric conductive member being spaced apart from the first electric conductive member by a first creepage distance;
a cable including a ground wire connected to the ground electrode and a plurality of wires connected to the plurality of electrodes; and

wherein the first creepage distance is such that the substrate barrel provides electrical insulation between the first and second electric conductive members during operation of the image sensor and enables discharge of an unintended outside current between the first and second electric conductive members;
the first electric conductive member is spaced apart from the imaging sensor; and
the first electric conductive member overlaps with the second electric conductive member in a longitudinal direction.