Eine Stablinse (10) dient zum Einbau in Endoskope. Die Stablinse (10) weist einen stabförmigen Körper (12) auf. Der Körper (12) ist zumindest abschnittsweise aus einem flexiblen, transparenten, massiven Stück (18) aus Kunststoffmaterial hergestellt.The lens (10) has a rod-like body (12), which is manufactured from a flexible, transparent, massive piece (18) of plastic material. The plastic material shows an elasticity of hardness of less than 60 or 50. The rod-like body possesses two glass units, such as symmetrical reflector units (14, 16). Joints (20, 22) of the glass units are planar or optically active. Convex surfaces (24, 26) are provided at end sides of the reflector units. An independent claim is also included for an endoscope with an optical tube, in which one or more rod lenses are included.