Moiré Patterns
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Moiré patterns are extremely useful to help understand basic
interferometry and interferometric test
results.
Chapter 16 in the second edition of the book Optical Shop Testing
describes the relationship between moiré patterns and
interferometry. The pdf files given below can be downloaded
and printed to illustrate the examples in Chapter 16.
If there are other patterns you would like to
see on this website, please let me know.
Jim.Wyant@optics.arizona.edu.
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| Tilt only |
Patterns
illustrating two-wavelength interferometry |
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50 Waves Tilt |
Mirror measured at 488 nm |
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55 Waves Tilt |
Mirror measured at 632.8 nm |
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75 Waves Tilt |
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Misc |
| Tilt and
Defocus |
Spherical Wave |
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50 Waves Tilt, 4 Waves Defocus |
Zone Plate |
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50 Waves Tilt, 8 Waves Cone |
| Tilt and
Aberration |
50 Waves Tilt, 6 Waves Rectangular Tilt |
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55 Waves Tilt, 6 Waves Spherical, -3 Waves Defocus |
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50
Waves Tilt, 5 Waves Coma |
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50
Waves Tilt, 3.5 Waves Astigmatism |
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50 Waves Tilt, 7 Waves Astigmatism, -3.5 Waves Defocus |
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