| 摘要 |
<p>A hard endoscope is disclosed having a hard outer tube, an inner tube disposed eccentrically within the outer tube, such that a gap is left between the two tubes, the inner tube having an observing optical system disposed therein, a plurality of light guide fibers disposed within the gap, the light guide fibers being adapted to transmit light along the length thereof and an end surface formed by the termination of the outer tube, the inner tube, and the light guide fibers. The outer tube has a tip member disposed on the end thereof, the tip member having an opening and forming a curved inner peripheral surface. The inner tube has a tip member disposed on the end thereof, the tip member having a curved outer peripheral surface and a slit for receiving reflected light, and the inner tube tip member terminating at the above-mentioned opening. The outer peripheral surface of the inner tube and the inner peripheral surface of the outer tube are curved in generally the same direction. The light guide fibers disposed between the two peripheral surfaces are also curved, curves thereof having various different curvatures, such that the light which is emitted therefrom is emitted in different directions.</p> |
