Producing of an endoscope with an optical waveguide

1 . A method for producing of an endoscope, with the following steps:

introducing of optical fibers into a lumen in the endoscope;

heating of the optical fibers;

narrowing of the lumen;

melting together of the optical fibers,

wherein the narrowing of the lumen and the melting together of the optical fibers take place at least partially at the same time.

2 . The method according to claim 1 , in which the narrowing of the lumen and the melting together of the optical fibers take place at the distal end of the endoscope.

3 . The method according to claim 2 , also with the following step:

formation of a light admission face or of a light exit face on the optical fibers in or on the molten area of the optical fibers.

4 . The method according to claim 1 , in which optical fibers are welded to a wall delimiting the lumen.

5 . The method according to claim 1 , in which the optical fibers are welded to an outer shaft of the endoscope.

6 . The method according to claim 1 , in which the optical fibers are welded to an inner shaft of the endoscope ( 14 ).

7 . The method according to claim 1 , in which the narrowing involves two walls, which delimit the lumen, being moved relative to each other.

8 . The method according to claim 1 , in which the narrowing involves a deformation of a wall that delimits the lumen.

9 . The method according to claim 8 , in which the narrowing involves a crimping or curving of the wall.

10 . An endoscope, with:

optical fibers for transmitting illumination light to the distal end of the endoscope;

wherein the optical fibers are arranged in a lumen,

wherein the optical fibers are melted together at least at a location where the lumen was narrowed during the producing of the endoscope after introducing of the optical fibers into the lumen.