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Proceedings Paper

Compact zoom lens for stereoscopic television
Author(s): Peter M. Scheiwiller; Sean Murphy; Andrew A. Dumbreck
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Paper Abstract

This paper describes the on-going development of a compact zoom lens specifically for stereoscopic television in nuclear environments. Custom-designed optics in radiation-tolerant glass provide a focal length of 12.5 mm to 36 mm with a package length of less than 110 mm. A novel method of encoding the position of the lens elements allows for very compact motorization, and a precision mechanism designed to overcome backlash ensures the stability of picture matching. The position of the lens elements is controlled by a 16-bit microcontroller, and the control strategy allows focus and convergence to be maintained to a high degree of accuracy during zooming.

Paper Details

Date Published: 1 August 1991
PDF: 7 pages
Proc. SPIE 1457, Stereoscopic Displays and Applications II, (1 August 1991); doi: 10.1117/12.46318
Show Author Affiliations
Peter M. Scheiwiller, AEA Technology (United Kingdom)
Sean Murphy, AEA Technology (United Kingdom)
Andrew A. Dumbreck, AEA Technology (United Kingdom)

Published in SPIE Proceedings Vol. 1457:
Stereoscopic Displays and Applications II
John O. Merritt; Scott S. Fisher, Editor(s)

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