| 摘要 |
PURPOSE:To make a front end part small-sized by constituting an endoscope so that the optical axis of an incidence-side part in an objective optical system is off the center of the front end part. CONSTITUTION:In an endoscope 1, a slightly large-diameter front end constituting part 3 is formed in the front end side of a flexible insertion part 2, and an image pickup means, an illumination optical system, etc. are stored in this part 3. In the front end part 3, a front end part body 4 is formed with a solid member such as a metal or the like, an optical system for image pickup is provided eccentrically from a center O of the front end part 3 in this body 4. The front end of a transmission hole is covered with a cover glass 5, and an objective lens system 6 is stored in the depth through a lens frame 7. |
