Reflex sight
A reflex sight ( 10 ) comprises a housing ( 20 ) fitted with a proximal aperture ( 21 ) and a distal aperture ( 22 ) along an optics axis (A). It further includes a projection unit ( 40 ) reproducing the light generated by a light source ( 50 ) as a target mark (Z), and a feed optics ( 60 ) feeding the target mark (Z) reproduced by the projection unit ( 40 ) into the beam along the optic axis (A). To preclude the target mark (Z) from being visible to the sighted object, the invention provides that at least one implementing means ( 61, 62 ) of the invention be used whereby the target mark (Z) reproduced by the projection unit ( 40 ) substantially shall be visible only from the proximal aperture ( 21 ). The implementing means ( 61, 62 ) of the invention may be a polarizing beam splitting layer ( 61 ) designed as an interface layer ( 65 ) between two prisms ( 63, 64 ). Alternatively a band blocking filter ( 62 ) may be used which is configured between the feed optics ( 60 ) and the distal aperture ( 22 ) and which precludes light reflected by the feed optics ( 60 ) from passing through the distal aperture ( 22 ) by blocking/filtering such light. To attain economic and simple manufacture of the sight ( 10 ), the components ( 40, 50, 60, 70, 80, 90, 100 ) of the sight ( 10 ) are prefabricated sub-assemblies that can be installed rapidly and accurately in the housing ( 20 ).
1. A reflex sight ( 10 ) comprising a housing ( 20 ) fitted with a proximal aperture ( 21 ) and a distal aperture ( 22 ) along an optic axis (A), further a projection unit ( 40 ) reproducing the light generated by a light source ( 50 ) as a target mark (Z) and a feed optics ( 60 ) feeding the target mark (Z) reproduced by the projection unit ( 40 ) into the beam along the optic axis (A),
characterized
in that at least one implementing means of the invention ( 61 , 62 ) is provided which ensures that the target mark (Z) reproduced by the projection unit ( 40 ) essentially shall be visible solely from the proximal aperture ( 21 ).
2. Reflex sight as claimed in claim 1 , characterized in that one of the implementing means of the invention ( 61 ) is designed in a manner that the target mark (Z) is fed only in a direction (R) to the proximal aperture ( 21 ) into the beam along the optic axis (A).
3. Reflex sight as claimed in claim 1 ; characterized in that the implementing means of the invention ( 61 ) is configured in the region of the feed optics ( 60 ).
4. Reflex sight as claimed in claim 1 , characterized in that the implementing means of the invention ( 61 ) is part of the feed optics ( 60 ).
5. Reflex sight as claimed in claim 1 , characterized in that the implementing means of the invention is a polarizing beam splitting layer ( 61 ).
6. Reflex sight as claimed in claim 5 , characterized in that the polarizing beam splitting layer ( 61 ) is a MacNeille polarizer.
7. Reflex sight as claimed in claim 1 , characterized in that the feed optics ( 60 ) is a semi-transmitting mirror, the polarizing beam splitting layer ( 61 ) being deposited as a boundary surface on the mirror.
8. Reflex sight as claimed in claim 1 , characterized in that the feed optics ( 60 ) is in the form of a prism, the polarizing beam splitting layer ( 61 ) being deposited as a boundary surface on the prism.
9. Reflex sight as claimed in claim 1 , characterized in that the feed optics ( 60 ) is constituted by two mutually adjoining prisms ( 63 , 64 ), the polarizing beam splitting layer ( 61 ) being inserted between the boundary surfaces ( 65 ) of the two prisms ( 63 , 64 ).
10. Reflex sight as claimed in claim 9 , characterized in that the prisms ( 63 , 64 ) are made of materials of different indices of refraction.
11. Reflex sight as claimed in claim 9 , characterized in that at their sides away from the boundary surfaces ( 65 ), the surfaces ( 66 , 67 ) of the prisms ( 63 , 64 ) are parallel to each other.
12. Reflex sight as claimed in claim 1 , characterized in that one of the implementing means of the invention ( 62 ) is designed in a manner that light reflected by the feed optics ( 60 ) toward the distal aperture ( 22 ) cannot exit the reflex sight ( 10 ).
13. Reflex sight as claimed in claim 12 , characterized in that the implementing means of the invention ( 62 ) is configured between the feed optics ( 60 ) and the distal aperture ( 22 ).
14. Reflex sight as claimed in claim 12 , characterized in that the implementing means of the invention ( 62 ) is a band blocking filter.
15. Reflex sight as claimed in claim 12 , characterized in that the band blocking filter ( 62 ) is designed in a manner that the wavelength range emitted by the light source ( 50 ) is blocked.
16. Reflex sight as claimed in claim 12 , characterized in that the band blocking filter ( 62 ) is deposited on the feed optics ( 60 ).
17. Reflex sight as claimed in claim 12 , characterized in that the band blocking filter ( 62 ) is part of the feed optics ( 60 ).
18. Reflex sight as claimed in claim 1 , characterized in that the projection unit ( 40 ) includes a collimation optics ( 41 ).
19. Reflex sight as claimed in claim 1 , characterized in that the projection unit ( 40 ) includes at least one fully specular mirror ( 42 ).
20. Reflex sight as claimed in claim 1 , characterized in that the light source ( 50 ) is natural light.
21. Reflex sight as claimed in claim 1 , characterized in that the light source ( 50 ) is an electric light source.
22. Reflex sight as claimed in claim 21 , characterized in that the light source ( 50 ) is an LED.
23. Reflex sight as claimed in claim 21 , characterized in that the LED is fitted with a stop.
24. Reflex sight as claimed in claim 1 , characterized in that the light source ( 50 ) may be dimmed and/or switched.
25. Reflex sight as claimed in claim 18 , characterized in that the spacing between the collimation optics ( 41 ) and the light source ( 50 ) is variable.
26. Reflex sight as claimed in claim 1 , characterized in that the position of the target mark (Z) is adjustable relative to the optic axis (A).
27. Reflex sight as claimed in claim 1 , characterized in that the position of the target mark (Z) is adjustable horizontally and/or vertically.
28. Reflex sight as claimed in claim 1 , characterized in that the feed optics ( 60 ) is pivotable relative to the housing ( 20 ).
29. Reflex sight as claimed in claim 28 , characterized in that the feed optics ( 60 ) is supported in a gimbal system ( 70 ).
30. Reflex sight as claimed in claim 1 , characterized in that the projection unit ( 40 ) is pivotable relative to the optic axis (A).
31. Reflex sight as claimed in claim 30 , characterized in that the projection unit ( 40 ) is supported in a gimbal system ( 70 ).
32. Reflex sight as claimed in claim 1 , characterized in that tools are not required to adjust the position of the target mark (Z).
33. Reflex sight as claimed in claim 1 , characterized in that the target mark (X) is substantially free of parallax.
34. Reflex sight as claimed in claim 1 , characterized in that the housing ( 20 ) is dust proof and water tight.
35. Reflex sight as claimed in claim 1 , characterized in that the housing ( 20 ) is integral.
36. Reflex sight as claimed in claim 1 , characterized in that tools are not required to mount the housing ( 20 ) on a weapon.