Video blink comparator

摘要: A video blink comparator incorporates an optical system for presenting and superimposing a data pattern image reference image, generating signal final comparison of the control blinking respective on off at same frequency out phase so that picture formed by remains constant when patterns are substantially identical variant elements in picture. lens is provided spaced from camera to provide variable magnification or enlargement superimposed images. Universal mounting components permits sequential scanning fractional portions blocks permitting non-linear distortion introduced during formation. The variation number parameters affording flexibility its use application.