A riflescope for providing an adjustable point of aim for a weapon, comprising:
- a. a housing, said housing having a front end, a rear end and a middle section;
- b. an objective lens, said objective lens being mounted inside said housing at said front end of said housing, said objective lens having an optical axis and a first focal plane, said optical axis being constituted in a coordinate system having three axes perpendicular to each other, said three axes being referred to as x-axis, y-axis and z-axis, said coordinate system being oriented such that said z-axis coincides with said optical axis;
- c. an erector prism, said erector prism being fixedly mounted inside said housing, said erector prism being positioned after said objective lens, said erector prism together with said objective lens forming an erect image of a target at said first focal plane;
- d. a reticle for designating said point of aim, said reticle being fixedly mounted inside said housing, said reticle being positioned at or near said first focal plane;
- e. an eyepiece lens for converting said erect image into a virtual image viewable by a shooter, said eyepiece lens being mounted after said erector prism, said eyepiece lens being mounted inside said housing at said rear end of said housing;
- f. a first wedge prism, said first wedge prism being rotatably mounted inside said housing at said front end, said first wedge prism being mounted before said objective lens, said first wedge prism having a first deviation power α1, said first wedge prism having a first deviation axis, said first deviation axis being always perpendicular to said z-axis, said first deviation axis being rotatable around said z-axis, said first deviation axis forming a first rotation angle θ1 with respect to said x-axis, said first rotation angle θ1 being adjustable by said shooter within a first predetermined range ±θ1max, θ1max being less than or equal to 45 degrees;
- g. a second wedge prism, said second wedge prism being rotatably mounted inside said housing at said front end, said second wedge prism being mounted before said objective lens and after said first wedge prism, said second wedge prism having a second deviation power α2, said second wedge prism having a second deviation axis, said second deviation axis being always perpendicular to said z-axis, said second deviation axis being rotatable around said z-axis, said second deviation axis forming a second rotation angle θ2 with respect to said y-axis, said second rotation angle θ2 being adjustable by said shooter within a second predetermined range ±θ2max, θ2max being less than or equal to 45 degrees;
- whereby said shooter can adjust said point of aim along said y-axis by rotating said first wedge prism and adjust said point of aim along said x-axis by rotating said second wedge prism.