Patent ID: 8579450

Claim:
Sighting device for aligning a device connected to the sighting device by aligning the axis of the sighting device with a viewing axis, containing an elongate light source ( 11 ), which is a capsule emitting light on the basis of radio-luminescence in the form of a glass tube sealed so as to be airtight, which is coated with a luminous material on the internal face and filled with gaseous tritium, and an elongate body ( 12 , 15 ) made from a material which conducts light and/or collects light, and the light source and body are disposed coaxially, wherein the body is provided in the form of a tube ( 12 ), and a housing ( 1 ) is provided surrounding at least a part of the casing surface of the tube ( 12 ) which is made from a transparent material that is different from the material of the tube ( 12 ) and the light source ( 11 ) has a bigger external diameter than the tube, and a cutout of the light source ( 11 ) in the form of a central illuminating point ( 14 ) with a diameter corresponding to the internal cross-section of the tube ( 12 ) is visible through the interior of the tube ( 12 ), and the tube ( 12 ) and the housing ( 1 ) direct collected light by total reflection onto their end faces ( 13 ; 7 ) where the light exits so that the central point ( 14 ) is surrounded by an annular surface ( 13 ) which is surrounded by another annular surface ( 7 ), and the annular surfaces ( 13 ; 7 ) correspond to the end faces ( 13 ; 7 ) of the tube ( 12 ) and the housing ( 1 ), respectively.