Effects of wavefront aberration on visual instrument performance, and a consequential test technique

Nigel D. Haig; G. J. Burton

doi:10.1364/AO.26.000492

Applied Optics
Vol. 26,
Issue 3,
pp. 492-500
(1987)
•https://doi.org/10.1364/AO.26.000492

Effects of wavefront aberration on visual instrument performance, and a consequential test technique

Nigel D. Haig and G. J. Burton

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Nigel D. Haig and G. J. Burton, "Effects of wavefront aberration on visual instrument performance, and a consequential test technique," Appl. Opt. 26, 492-500 (1987)

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Abstract

Assessment of the visual image quality produced by afocal optical systems is complicated, by both the coherent coupling between eye and instrument and the general lack of correlation between the modulation transfer function and visual performance. This paper summarizes previous results obtained by the authors on simulating primary wavefront aberrations and extends the results to more typical higher-order aberrations, using the same image processor as before. The results strongly support the adoption of a form of Strehl ratio measurement as an outstandingly simple, yet visually appropriate assessment method for afocal systems. A possible test layout is suggested.

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		Observer NDH			Observer GJB
		60%	75%	90%	60%	75%	90%
W₂₀	vehicle	0.12 ± 0.02	0.20 ± 0.01	0.28 ± 0.01	0.13 ± 0.02	0.22 ± 0.01	0.31 ± 0.01
	ranpat	0.14 ± 0.01	0.20 ± 0.01	0.27 ± 0.01	0.11 ± 0.02	0.18 ± 0.01	0.25 ± 0.01
W₄₀	vehicle	0.12 ± 0.03	0.21 ± 0.01	0.29 ± 0.01	0.12 ± 0.02	0.19 ± 0.01	0.27 ± 0.01
	ranpat	0.07 ± 0.02	0.15 ± 0.01	0.24 ± 0.01	0.15 ± 0.02	0.21 ± 0.01	0.27 ± 0.01
W₆₀	vehicle	0.17 ± 0.02	0.25 ± 0.01	0.33 ± 0.01	0.12 ± 0.02	0.20 ± 0.01	0.28 ± 0.01
	ranpat	0.10 ± 0.02	0.19 ± 0.01	0.27 ± 0.01	0.14 ± 0.01	0.20 ± 0.01	0.26 ± 0.01
W₈₀	vehicle	0.19 ± 0.02	0.27 ± 0.01	0.36 ± 0.01	0.15 ± 0.02	0.23 ± 0.01	0.31 ± 0.01
	ranpat	0.13 ± 0.02	0.23 ± 0.01	0.32 ± 0.01	0.17 ± 0.02	0.25 ± 0.01	0.32 ± 0.01
W₂₂	vehicle	0.19 ± 0.02	0.29 ± 0.01	0.39 ± 0.02	0.17 ± 0.02	0.28 ± 0.01	0.40 ± 0.02
	ranpat	0.14 ± 0.02	0.25 ± 0.01	0.35 ± 0.02	0.15 ± 0.02	0.25 ± 0.01	0.35 ± 0.02
W₄₂	vehicle	0.24 ± 0.03	0.37 ± 0.02	0.51 ± 0.02	0.18 ± 0.03	0.30 ± 0.02	0.42 ± 0.02
	ranpat	0.16 ± 0.03	0.32 ± 0.02	0.47 ± 0.02	0.13 ± 0.02	0.23 ± 0.02	0.32 ± 0.02
W₆₂	vehicle	0.22 ± 0.03	0.38 ± 0.02	0.55 ± 0.02	0.17 ± 0.03	0.30 ± 0.02	0.44 ± 0.02
	ranpat	0.16 ± 0.03	0.32 ± 0.02	0.48 ± 0.02	0.21 ± 0.03	0.33 ± 0.02	0.45 ± 0.02
W₃₁	vehicle	0.25 ± 0.03	0.37 ± 0.02	0.49 ± 0.02	0.26 ± 0.03	0.41 ± 0.02	0.56 ± 0.02
	ranpat	0.24 ± 0.03	0.38 ± 0.02	0.51 ± 0.02	0.29 ± 0.04	0.42 ± 0.02	0.55 ± 0.02
W₅₁	vehicle	0.21 ± 0.04	0.38 ± 0.02	0.54 ± 0.02	0.19 ± 0.03	0.31 ± 0.02	0.43 ± 0.02
	ranpat	0.21 ± 0.03	0.35 ± 0.02	0.50 ± 0.02	0.19 ± 0.03	0.36 ± 0.02	0.52 ± 0.02

		Wavelengths	Variation (%)
Spherical terms	W₂₀	0.200 ± 0.009	−27.9
	W₄₀	0.190 ± 0.016	−31.5
	W₆₀	0.210 ± 0.016	−24.3
	W₈₀	0.245 ± 0.011	−11.7
Astigmatic terms	W₂₂	0.268 ± 0.012	−3.4
	W₄₂	0.305 ± 0.033	+10.0
	W₆₂	0.333 ± 0.020	+20.1
Comatic terms	W₃₁	0.395 ± 0.014	+42.4
	W₅₁	0.350 ± 0.017	+26.2
Mean		0.277 ± 0.023

		Wavelengths	Variation (%)
Spherical terms	W₂₀	0.875 ± 0.010	+0.6
	W₄₀	0.879 ± 0.017	+1.0
	W₆₀	0.869 ± 0.017	−0.1
	W₈₀	0.847 ± 0.011	−2.6
Astigmatic terms	W₂₂	0.838 ± 0.012	−3.7
	W₄₂	0.843 ± 0.026	−3.1
	W₆₂	0.855 ± 0.013	−1.7
Comatic terms	W₃₁	0.918 ± 0.005	+5.5
	W₅₁	0.904 ± 0.008	+3.9
Mean		0.870 ± 0.009

		Observer NDH			Observer GJB
		60%	75%	90%	60%	75%	90%
W₂₀	vehicle	0.12 ± 0.02	0.20 ± 0.01	0.28 ± 0.01	0.13 ± 0.02	0.22 ± 0.01	0.31 ± 0.01
	ranpat	0.14 ± 0.01	0.20 ± 0.01	0.27 ± 0.01	0.11 ± 0.02	0.18 ± 0.01	0.25 ± 0.01
W₄₀	vehicle	0.12 ± 0.03	0.21 ± 0.01	0.29 ± 0.01	0.12 ± 0.02	0.19 ± 0.01	0.27 ± 0.01
	ranpat	0.07 ± 0.02	0.15 ± 0.01	0.24 ± 0.01	0.15 ± 0.02	0.21 ± 0.01	0.27 ± 0.01
W₆₀	vehicle	0.17 ± 0.02	0.25 ± 0.01	0.33 ± 0.01	0.12 ± 0.02	0.20 ± 0.01	0.28 ± 0.01
	ranpat	0.10 ± 0.02	0.19 ± 0.01	0.27 ± 0.01	0.14 ± 0.01	0.20 ± 0.01	0.26 ± 0.01
W₈₀	vehicle	0.19 ± 0.02	0.27 ± 0.01	0.36 ± 0.01	0.15 ± 0.02	0.23 ± 0.01	0.31 ± 0.01
	ranpat	0.13 ± 0.02	0.23 ± 0.01	0.32 ± 0.01	0.17 ± 0.02	0.25 ± 0.01	0.32 ± 0.01
W₂₂	vehicle	0.19 ± 0.02	0.29 ± 0.01	0.39 ± 0.02	0.17 ± 0.02	0.28 ± 0.01	0.40 ± 0.02
	ranpat	0.14 ± 0.02	0.25 ± 0.01	0.35 ± 0.02	0.15 ± 0.02	0.25 ± 0.01	0.35 ± 0.02
W₄₂	vehicle	0.24 ± 0.03	0.37 ± 0.02	0.51 ± 0.02	0.18 ± 0.03	0.30 ± 0.02	0.42 ± 0.02
	ranpat	0.16 ± 0.03	0.32 ± 0.02	0.47 ± 0.02	0.13 ± 0.02	0.23 ± 0.02	0.32 ± 0.02
W₆₂	vehicle	0.22 ± 0.03	0.38 ± 0.02	0.55 ± 0.02	0.17 ± 0.03	0.30 ± 0.02	0.44 ± 0.02
	ranpat	0.16 ± 0.03	0.32 ± 0.02	0.48 ± 0.02	0.21 ± 0.03	0.33 ± 0.02	0.45 ± 0.02
W₃₁	vehicle	0.25 ± 0.03	0.37 ± 0.02	0.49 ± 0.02	0.26 ± 0.03	0.41 ± 0.02	0.56 ± 0.02
	ranpat	0.24 ± 0.03	0.38 ± 0.02	0.51 ± 0.02	0.29 ± 0.04	0.42 ± 0.02	0.55 ± 0.02
W₅₁	vehicle	0.21 ± 0.04	0.38 ± 0.02	0.54 ± 0.02	0.19 ± 0.03	0.31 ± 0.02	0.43 ± 0.02
	ranpat	0.21 ± 0.03	0.35 ± 0.02	0.50 ± 0.02	0.19 ± 0.03	0.36 ± 0.02	0.52 ± 0.02

		Wavelengths	Variation (%)
Spherical terms	W₂₀	0.200 ± 0.009	−27.9
	W₄₀	0.190 ± 0.016	−31.5
	W₆₀	0.210 ± 0.016	−24.3
	W₈₀	0.245 ± 0.011	−11.7
Astigmatic terms	W₂₂	0.268 ± 0.012	−3.4
	W₄₂	0.305 ± 0.033	+10.0
	W₆₂	0.333 ± 0.020	+20.1
Comatic terms	W₃₁	0.395 ± 0.014	+42.4
	W₅₁	0.350 ± 0.017	+26.2
Mean		0.277 ± 0.023

Abstract

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Tables (3)

Equations (9)

Applied Optics