Share Email Print

Spie Press Book

Modulation Transfer Function in Optical and Electro-Optical Systems
Author(s): Glenn D. Boreman
Format Member Price Non-Member Price

Book Description

This tutorial introduces the theory and applications of MTF, used to specify the image quality achieved by an imaging system. It covers basic linear systems theory and the relationship between impulse response, resolution, MTF, OTF, PTF, and CTF. Practical measurement and testing issues are discussed.

Book Details

Date Published: 1 July 2001
Pages: 120
ISBN: 9780819441430
Volume: TT52
Errata

Table of Contents
SHOW Table of Contents | HIDE Table of Contents

Click below to view sample pages on Optipedia.

PREFACE / vii
CHAPTER 1 MTF IN OPTICAL SYSTEMS / 1
1.1 Impulse response / 1
1.2 Spatial frequency / 4
1.3 Transfer function / 7
1.3.1 Modulation transfer function / 9
1.3.2 Phase transfer function / 12
1.4 MTF and resolution / 16
1.5 Diffraction MTF / 18
1.5.1 Calculation of diffraction MTF / 20
1.5.2 Diffraction MTF for obscured systems / 25
1.6 Geometrical MTF / 26
1.6.1 Effect of defocus on MTF / 27
1.6.2 Effect of other aberrations on MTF / 27
1.6.3 MTF and Strehl ratio / 28
References / 29
Further reading / 30
CHAPTER 2 MTF IN ELECTRO-OPTICAL SYSTEMS / 31
2.1 Detector footprint MTF / 31
2.2 Sampling / 35
2.2.1 Aliasing / 35
2.2.2 Sampling MTF / 41
2.3 Crosstalk / 51
2.4 Electronic-network MTF / 53
2.5 Conclusion / 55
References / 56
Further reading / 57
CHAPTER 3 OTHER MTF CONTRIBUTIONS / 59
3.1 Motion MTF / 59
3.2 Vibration MTF / 60
3.3 Turbulence MTF / 62
3.4 Aerosol-scattering MTF / 65
References / 67
Further reading / 68
CHAPTER 4 MTF MEASUREMENT METHODS / 69
4.1 Point-spread function (PSF) / 70
4.2 Line-spread function (LSF) / 71
4.3 Edge-spread function (ESF) / 73
4.4 Comparison of PSF, LSF, and ESF / 76
4.5 Noise targets / 76
4.5.1 Laser speckle MTF test / 77
4.5.2 Random-transparency MTF test / 78
4.6 Bar-target MTF measurement / 79
References / 84
CHAPTER 5 PRACTICAL MEASUREMENT ISSUES / 85
5.1 Cascade properties of MTF / 85
5.2 Quality of auxiliary optics / 89
5.3 Source coherence / 90
5.4 Correcting for finite source size / 91
5.5 Correcting for the image-receiver MTF / 94
5.5.1 Finite pixel width / 94
5.5.2 Finite sampling interval / 95
5.6 Summary of instrumental MTF issues / 96
5.7 Increasing SNR in PSF, LSF, and ESF tests / 96
5.7.1 Object- and image-plane equivalence / 96
5.7.2 Averaging in pixelated detector arrays / 99
5.7.3 Potential pitfalls / 100
5.8 MTF testing observations / 101
5.9 Use of computers in MTF measurements / 101
5.10 Representative instrument designs / 102
5.10.1 Example #1: visible ESF / 102
5.10.2 Example #2: infrared line response / 103
5.10.3 Example #3: visible square-wave response / 104
5.10.4 Example #4: bar-target response / 106
References / 106
Further reading / 107
INDEX / 109

© SPIE. Terms of Use
Back to Top