Abstract

A knife-edge scanning method was developed to enhance the accuracy in OTF measurement. A slit image formed by the lens under test was scanned by a knife-edge which was moved by a stepping motor. It was possible to increase the signal-to-noise ratio with averaging 4–32 data at each point through a scan. The standard deviation was decreased to under 0.25% in the MTF unit.

© 1987 Optical Society of America

A Comparison of Two Different Methods of OTF Measurement

E. C. Yeadon
Appl. Opt. 8(12) 2541-2544 (1969)

The Use of Standard Test Lenses for Verifying the Accuracy of OTF Equipment

T. L. Williams and A. Ashton
Appl. Opt. 8(10) 2007-2012 (1969)

Procedure for Over-all Lens Evaluation Using OTF Data

David Dutton
Appl. Opt. 11(5) 1091-1100 (1972)

OTF measurements with a white light source: an interferometric technique

J. C. Wyant
Appl. Opt. 14(7) 1613-1615 (1975)

Television system for the measurement of atmospheric OTF degradation

N. Ben-Yosef, E. Tirosh, A. Weitz, and E. Pinsky
Appl. Opt. 18(14) 2462-2465 (1979)