| Shack-Hartmann wavefront sensor test of multi-component lens |
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Setup:
In the above configuration, parallel light from Optino falls on the element L being tested, and comes to focus at F. It is then reflected back into Optino by the spherical mirror S.
The aberrations of the SH system are removed by taking a calibration CCD frame by using a good quality flat mirror in the parallel light, before it falls on the lens L.
This setup is evidently limited to testing small lenses, the limitation being imposed by the beam-size that the CCD can accept.
The accuracy of the tests depends on the quality of the spherical mirror S and the flat mirror used for the calibration.
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| Lenses |
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 multiple lens
system with
spherical mirror |
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| Mirrors |
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Ophthalmic lenses |
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| Human eye |
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| Astronomical Telescopes |
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