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Proceedings Paper

Lens Testing Method Based On The Boiling Phenomenon Of Laser Speckle
Author(s): Shin-ichi Komatsu; Toshio Morioka; Hitoshi Ohzu
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Paper Abstract

The boiling phenomenon of the subjective laser speckle produced by a moving diffuser is applied for lens testing by two methods, in one of which the temporal auto-correlation of the fluctuating signal detected at a certain point in the speckle field is used for measuring the modulation transfer function (MTF) of the lens through which the speckle is produced. Using an automated MTF measuring system developed on this principle, some experimental results are obtained for an ordinary camera lens as well as a gradient-index (GRIN) rod lens. In the other method, the spatial cross-correlation of two speckle patterns produced before and after the diffuser translation is used for visualizing the non-uniformity of imaging capability of a GRIN rod-lens-array.

Paper Details

Date Published: 25 November 1985
PDF: 9 pages
Proc. SPIE 0556, Intl Conf on Speckle, (25 November 1985); doi: 10.1117/12.949531
Show Author Affiliations
Shin-ichi Komatsu, Waseda University (Japan)
Toshio Morioka, Waseda University (Japan)
Hitoshi Ohzu, Waseda University (Japan)

Published in SPIE Proceedings Vol. 0556:
Intl Conf on Speckle
Henri H. Arsenault, Editor(s)

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