WaveOpt_25 - Department of Electrical and Computer...

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Department of Electrical and Computer Engineering ECSE 527 Optical Engineering ode V Tutorial III Code V Tutorial III March 8, 2010 ased on Optical Research Associates Code V Based on Optical Research Associates Code V Introduction Training Notes
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Outline • Ray Aberrations • Wavefront Analysis • Modulation Transfer Function (MTF) ptimi ti n Optimization ECSE 527 Code V Tutorial III 2
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Ray Aberration Curves • Select Analysis -> Diagnostics -> Ray Aberration Curves – Or use the toolbar button (scale set automatically): • Plot of transverse or OPD ray aberration vs. pupil position lot shows Plot shows deviations from the chief ray at the ECSE 527 Code V Tutorial III 3 image plane in X and Y
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Ray Aberration Curves • Vertical axis: distance on image plane between chief ray and current ray • Horizontal axis: relative height of ray in aperture op (or entrance/exit pupil) stop (or entrance/exit pupil) ECSE 527 Code V Tutorial III 4
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Ray Aberration Curves ECSE 527 Code V Tutorial III 5
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Typical Ray Aberration Curves ECSE 527 Code V Tutorial III 6
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Spot Diagrams at Paraxial Focus astron.berkeley.edu/ ~jrg/Aberrations/node5.html ECSE 527 Code V Tutorial III 7
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Exercise . Generate the spot diagrams and ray aberration curves for Cooke triplet • Which aberrations are present? ECSE 527 Code V Tutorial III 8
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Wavefront Analysis • Select Analysis -> Diffraction -> Wavefront Analysis. Calculates wavefront characteristics of the system, including RMS wavefront errors with and without optimum focus and the resulting Strehl definition. Use the Wavefront Analysis option when you want to: - Evaluate the RMS wavefront aberration or Strehl ratio at the defined focal position(s). - Find the best RMS wavefront focus under some defined focus relationship between fields and zoom positions, and to optionally insert this best focus into the lens system. - Evaluate the RMS wavefront aberration or Strehl ratio at this selected best focus. ECSE 527 Code V Tutorial III 9
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Wavefront Analysis Inputs •F o c u s M o d e : est focus (default) Best focus (default) –N o m i n a l f o c u s – Through focus • Field Weight – Control the contribution of each field to the best composite focus.
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WaveOpt_25 - Department of Electrical and Computer...

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