| 主权项 |
1. An endoscope comprising:
a distal end portion provided at a distal end of an insertion section; an image pickup unit provided at the distal end portion; and a treatment instrument channel provided at the distal end portion, wherein at the distal end portion, the image pickup unit and the treatment instrument channel are adjacent to each other, the image pickup unit includes an objective lens and an image pickup device, the image pickup device is disposed such that a plane parallel to a device surface on which pixels are formed crosses a center axis of the treatment instrument channel, has a pixel formation region capable of receiving an optical image of the objective lens and converting the optical image into an electric signal, and is configured to be capable of reading out any pixel in the pixel formation region, wherein in the pixel formation region, a segmentation region is set as a region read out as a region for displaying a video, and a center of the segmentation region is disposed to be shifted from a center of the pixel formation region toward the treatment instrument channel, and an optical axis of the objective lens is parallel to a center axis of the treatment instrument channel, and the center of the segmentation region is located on the optical axis. |
