Transcription of OPTI 517 Image Quality - University of Arizona
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OPTI 517 Image Quality - University of Arizona
OPTI 517 Image QualityRichard JuergensSenior Engineering FellowRaytheon Missile 5172 Why is Image Quality Important? Resolution of detail Smaller blur sizes allow better reproduction of Image details Addition of noise can mask important Image detailOriginalBlur addedNoise addedPixelatedOPTI 5173 Step One -What is Your Image Quality (IQ) Spec? There are many metrics of Image Quality Geometrical based ( , spot diagrams, RMS wavefront error) Diffraction based ( , PSF, MTF) Other (F-theta linearity, uniformity of illumination, etc.) It is imperativethat you have a specification for Image Quality when you are designing an optical system Without it, you don't know when you are done designing!
– Taken literally, this might mean that no aberrations are allowed ... • Ray aberration curves are generally computed for a fan in the YZ plane and a fan in the XZ plane – This omits skew rays in the pupil, which is a failing of this IQ metric Image plane Pupil position Image plane differences from the chief ray.
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