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Optical Engineering

An Inexpensive Automatic Digital Film Reader
Author(s): Diamantis D. Preonas; Hallock F. Swift; G. S. Williams
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Paper Abstract

An inexpensive digital film reader has been developed which can automatically record x and y coordinates of manually located points within a 2.5 cm x 2.5 cm area to within 20μ. The reader consists of a projection microscope with an instrumented movable stage. Positions of images on films clamped to the stage are determined by moving the stage until the target image point falls under a cross hair on the projection screen. Coordinates of the stage position are sensed with a digital voltmeter. The voltmeter drives a keypunch which records film position data in a form compatible with computer processing.

Paper Details

Date Published: 1 July 1970
PDF: 3 pages
Opt. Eng. 8(5) 805184 doi: 10.1117/12.7971534
Published in: Optical Engineering Volume 8, Issue 5
Show Author Affiliations
Diamantis D. Preonas, University of Dayton (United States)
Hallock F. Swift, University of Dayton (United States)
G. S. Williams, University of Dayton (United States)

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