Patent ID: 6754004
Filing Date: 2004-06-22
Classification: F41H,G02B

Abstract:
An optical sight for a combat vehicle, intended to be mounted in a weapon turret of the vehicle in order to make possible sight lines at elevations between roughly âˆ’10Â° and 90Â° of a weapon barrel mounted pivotably about a horizontal axis in the weapon turret, the sight comprising a lower standard sight unit, which deflects incident light along a vertical line by 90Â° to an eyepiece, and a top mirror, located above the standard sight unit and pivotable in synchronism with elevating movements of the barrel, and about the horizontal axis, wherein said sight further comprises a deflection prism which is positioned above the standard sight unit and has an upper surface which faces the top mirror, inclined at roughly 45Â° to the vertical line and designed to reflect totally incident light at an angle of roughly 45Â° to the surface and less, but to transmit light (L) which is incident at roughly 90Â° to the surface, in addition to which the deflection prism has a reflecting surface which lies behind the upper surface in the light incidence direction and is inclined at a smaller angle to the vertical line than the upper surface, the mirror being arranged so as to direct incident light (L) parallel to the barrel essentially at right angles to the upper surface of the prism, so that the incident light (L), after reflection against the surface lying behind, can be reflected from inside against the upper surface in order then to be made to fall vertically into the standard sight unit, andwherein a secondary prism connected in parallel optically with the standard sight unit is arranged after the deflection prism in the light incidence direction, which secondary prism is designed and arranged so as to receive light incident from the mirror and reflected from outside on the upper surface of the deflection prism and to deflect it towards a person operating the sight in order to make a direct view possible for said person by means of the necessary adjustment of the mirror therefor.