Deflection prism assembly for an endoscope having a lateral viewing direction, endoscope, and method for assembling a deflection prism assembly

A deflection prism assembly for an endoscope having a lateral viewing direction, the deflection prism assembly comprising:

• a prism holder;
• and
• a deflection prism accommodated in the prism holder;
• wherein the deflection prism has a light outlet surface and an opposite light inlet surface arranged obliquely to the light outlet surface, the deflection prism further having a lateral surface extending between the light inlet surface and the light outlet surface;
• the prism holder accommodates the deflection prism such that the prism holder surrounds less than all regions of the lateral surface of the deflection prism;
• and
• the prism holder comprises a first part and a second part, the first part extending along an entire length of the deflection prism and the second part extending along a portion of the length less than the entire length, wherein the length is an extension of the deflection prism in a direction perpendicular to a light outlet plane, wherein the second part of the prism holder comprises a wedge shaped upper holding surface extending diagonal to the length of the deflection prism, wherein a reflection surface of the deflection prism extending diagonal to the length of the deflection prism is arranged parallel to the upper holding surface.