Dot-sight device with polarizers

Abstract

Disclosed is a dot-sight device with polarizers. The dot-sight device with polarizers includes: a reflecting mirror; a first polarizing unit provided in front of the reflecting mirror; a dot indication generator emitting a ray to the reflecting mirror to form a the dot virtual image; and a second polarizing unit provided in front of the dot indication generator, the first polarizing unit and the second polarizing unit being arranged so that a ray of the dot indication generator is passed through the second polarizing unit but blocked by the first polarizing unit. Thus, there is provided a dot-sight device with polarizers, in which a ray emitted from a dot indication generator is not discovered by the other party and thus a dot-sight observer is not discovered by the other party.

What is claimed is: 
     
         1 . A dot-sight device with polarizers, comprising:
 a reflecting mirror;   a first polarizing unit provided in front of the reflecting mirror;
 a dot indication generator emitting a ray to the reflecting mirror to form a the dot virtual image; and 
 a second polarizing unit provided in front of the dot indication generator, 
 the first polarizing unit and the second polarizing unit being arranged so that a ray of the dot indication generator is passed through the second polarizing unit but blocked by the first polarizing unit. 
   
     
     
         2 . The dot-sight device with polarizers according to  claim 1 , wherein the first polarizing unit is detachably assembled in front of the reflecting mirror. 
     
     
         3 . The dot-sight device with polarizers according to  claim 1 , wherein the first polarizing unit and the second polarizing unit comprise linear polarizers of which polarization directions are orthogonal to each other, or circular polarizers of which circular polarization directions are counter to each other. 
     
     
         4 . The dot-sight device with polarizers according to  claim 1 , further comprising a window which is arranged in rear of the reflecting mirror and to which the dot indication generator is fastened. 
     
     
         5 . The dot-sight device with polarizers according to  claim 4 , wherein the dot indication generator is provided in an area, where the reflecting mirror is projected in an optical axial direction of the dot sight, on the window. 
     
     
         6 . The dot-sight device with polarizers according to  claim 5 , wherein the window is formed with a transparent electrode circuit line to supply electric power to the dot indication generator. 
     
     
         7 . The dot-sight device with polarizers according to  claim 2 , further comprising a window which is arranged in rear of the reflecting mirror and to which the dot indication generator is fastened. 
     
     
         8 . The dot-sight device with polarizers according to  claim 7 , wherein the dot indication generator is provided in an area, where the reflecting mirror is projected in an optical axial direction of the dot sight, on the window. 
     
     
         9 . The dot-sight device with polarizers according to  claim 8 , wherein the window is formed with a transparent electrode circuit line to supply electric power to the dot indication generator. 
     
     
         10 . The dot-sight device with polarizers according to  claim 3 , further comprising a window which is arranged in rear of the reflecting mirror and to which the dot indication generator is fastened. 
     
     
         11 . The dot-sight device with polarizers according to  claim 10 , wherein the dot indication generator is provided in an area, where the reflecting mirror is projected in an optical axial direction of the dot sight, on the window. 
     
     
         12 . The dot-sight device with polarizers according to  claim 11 , wherein the window is formed with a transparent electrode circuit line to supply electric power to the dot indication generator.