Automatic Off-Axis OTF Testing

David M Berg

doi:10.1117/12.938293

17 November 1986 Automatic Off-Axis OTF Testing

David M Berg

Author Affiliations +

Proceedings Volume 0654, Automatic Optical Inspection; (1986) https://doi.org/10.1117/12.938293
Event: 1986 International Symposium/Innsbruck, 1986, Innsbruck, Austria

Abstract

The usefulness of a lens depends on its imaging performance over its entire field of view. An effective test must measure image quality at off-axis positions, as well as on axis. An automated system is described which quantifies image quality at several different field positions more quickly and precisely than is possible with a manual system. In addition to the Modulation Transfer Function (MTF), the Phase Transfer Function (PTF), field curvature and lens distortion can be measured. Algorithms used to find the off-axis image are discussed in detail, including trade-offs between speed and generality. It is shown that a well designed algorithm must take into account the expected characteristics of the off-axis image, with allowances for uncertainties. The operation of the test system is illustrated with examples.

Citation Download Citation

David M Berg "Automatic Off-Axis OTF Testing", Proc. SPIE 0654, Automatic Optical Inspection, (17 November 1986); https://doi.org/10.1117/12.938293

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE