Practical Measurement Issues

doi:10.1117/3.2581373.ch6

Book: Modulation Transfer Function in Optical and Electro-Optical Systems, Second Edition

Author(s): Glenn D. Boreman

Published: 2021

https://doi.org/10.1117/3.2581373.ch6

Author Affiliations +

Abstract

In this chapter, we will consider a variety of practical issues related to MTF measurement, including the cascade property of MTF multiplication, the quality of the auxiliary optics such as collimators and relay lenses, source coherence, and normalization at low frequency. We will conclude with some comments about the repeatability and accuracy of MTF measurements and the use of computers for data acquisition and processing. At the end of the chapter, we will consider four different instrument approaches that are representative of commercial MTF equipment and identify the design tradeoffs.