Automatic search for cemented doublets using the saddle point construction method | Journal of the European Optical Society-Rapid Publications

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Table 5

Glass combinations of the top 5 achromatic cemented doublets with $Δ Φ_{P C_{2}} / {\bar{Φ}}_{j}$ $Mathematical equation: $$ \Delta {\Phi}_{P{C}_2}/{\overline{\Phi}}_j $$$ (at $Δ Φ_{P C_{1}} = 0$ $Mathematical equation: $$ \Delta {\Phi}_{P{C}_1}=0 $$$ ) and their separations.

First element material	Second element material	$Δ Φ_{P C_{2}} / {\bar{Φ}}_{j}$ $Mathematical equation: $$ \Delta {\Phi}_{P{C}_2}/{\overline{\Phi}}_j $$$ (at $Δ Φ_{P C_{1}} = 0$ $Mathematical equation: $$ \Delta {\Phi}_{P{C}_1}=0 $$$ )	Distance between materials
N-FK58	N-LASF31A	−0.000187	0.01341
N-PK51	N-BASF64	−0.000241	0.01229
N-PK51	N-LASF41	−0.000177	0.01010
N-FK51A	P-LASF47	−0.000199	0.01249
N-PK52A	N-LASF41	−0.000179	0.01083

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