Numerical control tape preparation machine

Claim 1

A numerical control tape preparation machine comprising: a table upon which may be mounted an apertured printed circuit board wherein the locations of apertures therein are to be measured, said table being movable in two axial directions mutually perpendicular to each other and in an aperture viewing plane parallel to the table surface; drive motors for driving said table along said two axes; memory means for storing the displacement of said table along said axes; a television camera unit installed at right angles relative to said table for receiving light reflected from said object to be measured, said camera unit having an optical system including an objective lens and a reticule having crossed and graduated lines and rotatably mounted in an image focusing plane of said objective lens, said image focusing plane being parallel to said aperture viewing plane and an eyepiece for simultaneously converting said printed circuit board apertures and said crossed and graduated lines into images; an illumination device for directing/light toward said table surface to illuminate a part of said object to be measured; a monitoring television receiver coupled to said television camera unit for displaying at least a portion of said apertured printed circuit board to be measured on an enlarged scale; recording means for recording on a numerical control tape the information in said memory means based on said information; and a manually operable unit for controlling the drives of said drive motors, said illumination device comprising (i) a light source for illuminating the entire portion of said apertured printed circuit board to be measured which is displayed on said monitoring television receiver and (ii) a spot-light illumination means for simultaneously and intensely illuminating a desired region with a dot-like spot within said entire portion of said apertured printed circuit board which is displayed on said monitoring television camera.