Wavefront Coding

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Application:Lens simplification for cost reductionand weight reduction
Simplification of LWIR F/1 f=75mm Geoptical system• From TWO ELEMENTS• Field flattener• Diffraction-limited• To SINGLET• Corrected for coma and sphericalaberration• Off-axis performance limited by• Field curvature• Astigmatism31142mm78mm
Page 1 and 2: Computational Imaging:More pixels,
Page 3 and 4: Why computational imaging?• Imagi
Page 5 and 6: Hybrid imaging5
Page 7 and 8: The additional parameter space with
Page 9 and 10: Effect of defocus when usingsymmetr
Page 11 and 12: Optimisation of artefact-free imagi
Page 13 and 14: Through-focus imaging fidelity13
Page 15 and 16: Expected imaging error• errorε 2
Page 17 and 18: Relative performance of cubic, pure
Page 19 and 20: Optimum phase amplitudeα optimum
Page 21 and 22: Artefacts⎡OH o'(x, y) = I −1 W2
Page 23 and 24: Decomposition of OTF• Defocus:•
Page 25 and 26: The origin of image replicationsOTF
Page 27 and 28: Parametric blind-deconvolution:Calc
Page 29: Accuracy of optical W 20DError in W
Page 33 and 34: Pure and Generalised Cubic Solution
Page 35 and 36: IR singlet and phase maskDesignManu
Page 37 and 38: And as a movie37
Page 39 and 40: Single-moving-element zoom lenses:t
Page 41 and 42: No Phase maskGeneralised CubicPure

Wavefront Coding

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