| 摘要 |
<p>An inserted part for endoscopes ensuring a favorable observation field of view by enabling the dirt adhering to the outer surfaces of observation optical systems to be completely removed. The part comprises an inserted portion having an end and a conduit therein which has an inner circumferential length great enough to pass a medical tool therethrough, a first imaging portion for capturing a first observation image, a second imaging portion for capturing a second observation image, a first observation optical system provided at the end and adapted for focusing the light entering the first imaging portion, a second observation optical system provided at the end and adapted for focusing the light entering the second imaging portion, and an opening portion provided in the end surface of the end and communicating with the conduit. The distance between the center of the opening portion in the end surface and the center of the first observation optical system is shorter than that between the center of the opening portion and the center of the second observation optical system.</p> |
