A Miniature Focus Sensor

Alan J. MacGovern

doi:10.1117/12.944417

11 December 1984 A Miniature Focus Sensor

Alan J. MacGovern

Proceedings Volume 0496, Airborne Reconnaissance VIII; (1984) https://doi.org/10.1117/12.944417
Event: 28th Annual Technical Symposium, 1984, San Diego, United States

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.

Citation Download Citation

Alan J. MacGovern "A Miniature Focus Sensor", Proc. SPIE 0496, Airborne Reconnaissance VIII, (11 December 1984); https://doi.org/10.1117/12.944417

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