Patent Document ID: 4482223
Application ID: 06388687
Patent Status: 1

Claim One:
1. A photogrammatic rectifying device of the non-tilting lens type comprising a light source for emitting a projection beam, a condenser lens for shaping said projection beam, an aerial photograph to be rectified, a carrier means for mounting said photograph, at least three control points, an objective lens having an optical axis, a projection table having four quadrants, at least one measuring mark being provided in each of said four quadrants, said light source, said condenser lens, said carrier means, said objective lens and said projection table being subsequently arranged in optical alignment about said optical axis, means for displacing said carrier means about two coordinate directions at right angles to said optical axis, a computer, means for varying the magnification of said objective lens, said control points being provided in the plane of said photograph non-coincident to said optical axis, said objective lens being for focusing said projection beam into a plane defined by said projection table, means for connecting said computer to said means for displacing and to said means for varying the magnification of said objective lens, said projection beam being for imaging said control points into the plane of said projection table, said means for displacing said carrier means in combination with said means for varying the magnification of said objective lens being for aligning said control points relative to said measuring mark in a respective one of said four quadrants, said means for displacing said carrier means further being for providing respective carrier means displacement values, said means for varying the magnification of said objective lens further being for providing magnification variation values, said means for connecting said computer to said means for displacing and to said means for varying said magnification being for feeding said respective displacement values and the magnification variation values, respectively, into said computer.