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A coherent light scanner for optical processing of large format transparenciesA laser scanner is discussed in which the scanning beam is random-access addressable and perpendicular to the image input plane and the irradiance of the scanned beam is controlled so that a constant average irradiance is maintained after passage through the image plane. The scanner's optical system and design are described, and its performance is evaluated. It is noted that with this scanner, data in the form of large-format transparencies can be processed without the expense, space, maintenance, and precautions attendant to the operation of a high-power laser with large-aperture collimating optics. It is shown that the scanned format as well as the diameter of the scanning beam may be increased by simple design modifications and that higher scan rates can be achieved at the expense of resolution by employing acousto-optic deflectors with different relay optics.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Callen, W. R.
(Georgia Inst. of Tech. Atlanta, GA, United States)
Weaver, J. E.
(Georgia Inst. of Tech. Atlanta, GA, United States)
Shackelford, R. G.
(Georgia Inst. of Tech. Atlanta, GA, United States)
Walsh, J. R.
(Georgia Institute of Technology Atlanta, Ga., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1975
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: Electro-optical Systems Design Conference and International Laser Exposition
Location: Anaheim, CA
Start Date: November 11, 1975
End Date: November 13, 1975
Accession Number
Funding Number(s)
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