Paraxial focal length calculation using Strehl definition measurement

Antonín Mikš; Jiří Novák

doi:10.1364/AO.58.004665

Applied Optics
Vol. 58,
Issue 17,
pp. 4665-4670
(2019)
•https://doi.org/10.1364/AO.58.004665

Paraxial focal length calculation using Strehl definition measurement

Antonín Mikš and Jiří Novák

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Antonín Mikš and Jiří Novák, "Paraxial focal length calculation using Strehl definition measurement," Appl. Opt. 58, 4665-4670 (2019)

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Abstract

This work describes a method for determination of a paraxial focal length of optical systems using measurements of the Strehl definition. The influence of spherical aberration on the value of the measured effective focal length of an optical system is analyzed, and a method is proposed for an elimination of this influence and determination of the paraxial focus position and the paraxial focal length of a lens from the measurement of the effective focal length and the Strehl definition.

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Equations (24)

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${(S.D.)}_{\max}$	$Δ f^{'}$
0.4	$2.49 e - 03$
0.5	$2.50 e - 03$
0.6	$2.60 e - 03$
0.7	$2.83 e - 03$
0.8	$3.29 e - 03$
0.9	$4.45 e - 03$

$f_{0}^{'} = 100.06 mm$ $λ = 632.8 nm$
$r$ (mm)	$d$ (mm)	$n$
51.54±0.02	5.023±0.005	1.51509±0.00005
$\infty$

$F$	$δ y^{'}$	$δ y_{OSLO}^{'}$	${(S.D.)}_{\max}$	$[{(S.D.)}_{\max}]_{Zygo}$	${(f_{0}^{'})}_{Zygo}$
10.00	−0.0145	−0.0138	0.982	0.979	100.07
6.667	−0.0475	−0.0469	0.614	0.596	100.08

${(S.D.)}_{\max}$	$Δ f^{'}$
0.4	$2.49 e - 03$
0.5	$2.50 e - 03$
0.6	$2.60 e - 03$
0.7	$2.83 e - 03$
0.8	$3.29 e - 03$
0.9	$4.45 e - 03$

$f_{0}^{'} = 100.06 mm$ $λ = 632.8 nm$
$r$ (mm)	$d$ (mm)	$n$
51.54±0.02	5.023±0.005	1.51509±0.00005
$\infty$

Abstract

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Equations (24)

Applied Optics