Patent ID: 9644920
Date: 2017-05-09
CPC Classifications: F41G,G02B

Claim:
1. A telescopic sight for designating a weapon's point of aim when pointed at a target, comprising: a. an objective lens for forming a first image of the target, said objective lens having a first focal plane, said objective lens having an optical axis, b. an image-erecting means for converting said first image into an upright and laterally-correct second image, said image erecting means being positioned on the objective optical axis on an image side of said objective lens, c. an eyepiece lens for converting said second image into a virtual third image of the target viewable by a shooter, said eyepiece lens having a second focal plane, said eyepiece lens being positioned on the objective optical axis on an image side of said image erecting means, d. a reticle for indicating the point of aim, said reticle being positioned coplanar with either said first focal plane or said second focal plane, e1. a first wedge prism, said first wedge prism having an entrance surface, an exit surface, an apex and a base, said first wedge prism being positioned on a target side of said objective lens on the objective optical axis, said first wedge prism being tiltable about a first tilt axis perpendicular to the objective optical axis such that the entrance surface and the exit surface of said first wedge prism simultaneously tilt about said first tilt axis, e2. a second wedge prism, said second wedge prism having an entrance surface, an exit surface, an apex and a base, said second wedge prism being positioned adjacent to said first wedge prism such that its apex faces the base of said first wedge prism, said second wedge prism being tiltable about a second tilt axis such that the entrance surface and the exit surface of said second wedge prism simultaneously tilt about said second tilt axis, said second tilt axis being perpendicular to the objective optical axis, said second tilt axis being parallel with said first tilt axis, e3. the tilt angles of said first wedge prism and said second prism being such that the two prisms as a whole tilt the light beam entering the objective lens making the image of the target shift with respect to the reticle, f. a knob which can be moved or turned by the shooter to select an adjustment setting, and g. a mechanical linkage for tilting said first wedge prism and said second wedge prism to predetermined angles when said knob is set to a predetermined adjustment setting, whereby the shooter can view and use said third image of the target for the purpose of aiming and shift a position of the reticle on the target image by adjusting said knob.