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METHOD AND APPARATUS FOR AUTOMATIC RANGING WITH VARIABLE POWER TELESCOPIC GUN SIGHT

  • US 3,782,822 A
  • Filed: 11/08/1971
  • Issued: 01/01/1974
  • Est. Priority Date: 11/08/1971
  • Status: Expired due to Term
First Claim
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1. In a variable power telescopic gun sight for mounting on a gun wherein is included the combination of a barrel with enclosed objective lens, ocular lens, zoom system comprised of erectors and magnifiers, which provide a front focus and rear focus, and means mounted on the barrel for changing the magnifying power of the telescope, the improvement comprising locating a reticle, with stadia and a fixed aim point physically located above the optic center of the telescope, at the rear focus between the ocular lens and the zoom system whereby power increases will cause the aim point to appear to move downwardly toward the optic center of the telescope and thereby automatically compensate for the trajectory of a bullet fired from the gun.

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