| 摘要 |
An endoscope is provided, with a first tube, a cover glass arranged at the distal end of the first tube, as well as with imaging optics, arranged in the first tube, which image an object located in front of the cover glass as an image, wherein the cover glass has a spherically curved, concave inside, a spherically curved, convex outside, and a constant thickness. |
| 主权项 |
1. An endoscope, comprising:
a first tube; and a cover glass arranged at a distal end of the first tube, as well as with imaging optics, arranged in the first tube, which image an object located in front of the cover glass as an image, wherein the cover glass has a spherically curved, concave interior surface having the same radius of curvature along an entirety of the interior surface, a spherically curved, convex exterior surface having the same radius of curvature along an entirety of the exterior surface, a constant thickness, and a perimeter edge surface spanning between the interior surface and the exterior surface, the perimeter edge surface defining opposing planar portions oriented parallel to one another, a first end portion spanning between the planar portions, and a second end portion opposite the first end portion and spanning between the planar portions, each of the first end portion and the second end portion are curved, wherein the cover glass is an oblong shape, and wherein the cover glass extends, in a first plane, over a first angle range and, in a second plane which is perpendicular to the first plane, over a second angle range, wherein the first angle range is larger than the second angle range. |
