Aberrations of non-axially symmetric systems · 2016. 3. 1. · • Plane symmetric systems •...
Transcript of Aberrations of non-axially symmetric systems · 2016. 3. 1. · • Plane symmetric systems •...
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Aberrations of non-axially symmetric systems
Introduction to aberrationsOPTI 518
Jose Sasian
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Approaches
• Eccentric pupil and off-axis• Tilted component systems• Plane symmetric systems• Many others
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Eccentric pupil and off-axis field approaches
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Tilted component systems
qH H
Optical axis rayOAR
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Determining the image plane tilt
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Displacement of the aberration field center
qH H
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Aberration function
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Vector algebra
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Aberration fields
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Graphical representation
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Astigmatism
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Distortion
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TCS Highlights
• Uses axially symmetric components• Aberration field concept• Aberration nodes• Neglects extrinsic aberrations• Provides new insights• Hybrid theory
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Plane symmetric systems
How do they behave?
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Aberration function
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Aberrations of aPlane symmetric system
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Definitions
Associated axially symmetric system
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Plane symmetric aberration coefficients
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Plane symmetric systems highlights
• Wide class of systems• Aberration function ad-hoc• “First-order” properties defined• Expansion is about OAR• Provides coefficients similar to Seidel sums• Can be thought of as generalization of the
theory of axially symmetric system• Ease to apply
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Summary
• Approaches to non-axially symmetric systems
• Many practical uses including tolerancing• Tilted components systems• Plane symmetric systems• Aberration field concept and nodes