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Proceedings Paper

A Miniature Focus Sensor
Author(s): Alan J. MacGovern
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Paper Abstract

The ability to rapidly measure the focus of images acquired by optical systems is important in many imaging applications. Itek Optical Systems, building on its extensive wave-front sensing and adaptive optics capability, has developed an electro-optic focus sensor directly mounted to a Nikon Camera. The sensor operates by measuring the relative position of the image formed by two halves of the optical aperture. The measurement is performed using a scanning technique and a processing algorithm implemented by digital electronics. Details of the sensor design with results of its operation are presented.

Paper Details

Date Published: 11 December 1984
PDF: 5 pages
Proc. SPIE 0496, Airborne Reconnaissance VIII, (11 December 1984); doi: 10.1117/12.944417
Show Author Affiliations
Alan J. MacGovern, Itek Corporation (United States)

Published in SPIE Proceedings Vol. 0496:
Airborne Reconnaissance VIII
Paul A. Henkel; Francis R. LaGesse, Editor(s)

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