Endoscope
AssigneeOlympus Medical Systems Corp.
InventorTakeshi TAKAHASHI
Life of this patent
Estimating the term…
Abstract
An endoscope includes a heat influence reducing portion that radiates heat, which is generated with light guiding of a light guide portion via a position near a second lens and conducted to the second lens, to a frame member to reduce a local temperature difference in the second lens in a projecting portion in which a first lens of a front observation window through which an inserting direction for insertion into a lumen is observed and the second lens having a truncated conical shape used for observing a viewing field region of a side observation window through which a direction crossing the inserting direction is observed are arranged.
Claims10
An endoscope comprising:
- a first lens that is provided in an insertion unit inserted into a lumen and used for observing a first direction;
- a second lens that is provided in the insertion unit and used for observing a second direction different from the first direction;
- a frame member that supports at least the second lens;
- a light guide portion that guides illumination light into the insertion unit and is provided to be adjacent to the second lens;
- a heat influence reducing portion that is provided on a bottom surface side of the second lens, abuts on the frame member, and alleviates concentration of heat generated with light guide of the light guide portion and conducted to the second lens onto a local portion in the second lens.
Dependencies are inferred from the claim text.