Tip housing for an endoscope with a coated wall surface

A method for manufacturing endoscopes, the method comprising:

• injection moulding tip housings in a two-component injection polymer moulding process, each of the tip housings being molded from polymers, the two component injection molding process comprising injection moulding a first component comprising a first material and subsequently injection molding a second component comprising a second material, the second component forming a liquid tight border with the first component to form the tip housing, the first material being transparent and the second material being opaque, each of the tip housings comprising an interior cavity and a proximal opening providing access to the interior cavity,
• the second component comprising:
• a longitudinally extending side wall portion, and
• a distal end wall portion, and the first component comprising:
• a window portion bonded to the side wall portion and/or the distal end wall portion, the window portion having a window surface including a camera window surface and an illumination window surface, the distal end wall portion and the window portion forming a distally facing end surface;
• placing the tip housings in holes of a jig having a treatment side and a mandrel in each of the holes, each of the mandrels positioned in the interior cavity of each of the tip housings after the tip housings are placed in the holes, and each of the distally facing end surfaces being exposed on the treatment side of the jig;
• covering the illumination window surfaces with a first mask configured to expose the camera window surfaces;
• and
• coating the camera window surfaces with a first treatment formulation.