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N-FK51A

Glass Code:  487845.368

“N”-glass as an environmentally friendly alternative to conventional lead and arsenic-containing glass types.

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optical glass klein 4zu3.jpg
Characteristics
nd 1.48656 νd 84.47
ne 1.48794 νe 84.07
nF-nC 0.005760 nF'-nC' 0.005804
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Download Data sheet N-FK51A
Technical Details
Refractive Indices
Characteristics λ [nm]
n2,325.4 2,325.4 1.46958
n1,970.1 1,970.1 1.47271
n1,529.6 1,529.6 1.47608
n1,060.0 1,060.0 1.47959
nt 1,014.0 1.47999
ns 852.1 1.48165
nr 706.5 1.48379
nC 656.3 1.48480
nC' 643.8 1.48508
Characteristics λ [nm]
n632.8 632.8 1.48534
nD 589.3 1.48651
nd 587.6 1.48656
ne 546.1 1.48794
nF 486.1 1.49056
nF' 480.0 1.49088
ng 435.8 1.49364
nh 404.7 1.49618
ni 365.0 1.50046
Characteristics λ [nm]
n334.1 334.1 1.50501
n312.6 312.6 1.50911
n296.7 296.7
n280.4 280.4
n248.3 248.3
Internal Transmittance
Characteristics λ [nm]
τ25/2500 2,500 0.750
τ25/2325 2,325 0.840
τ25/1970 1,970 0.989
τ25/1530 1,530 0.990
τ25/1060 1,060 0.994
τ25/700 700 0.995
τ25/660 660 0.995
τ25/620 620 0.996
τ25/580 580 0.997
τ25/546 546 0.997
τ25/500 500 0.996
τ25/460 460 0.993
τ25/436 436 0.992
τ25/420 420 0.992
τ25/405 405 0.993
τ25/400 400 0.993
τ25/390 390 0.992
τ25/380 380 0.988
τ25/370 370 0.976
τ25/365 365 0.963
τ25/350 350 0.875
τ25/334 334 0.630
τ25/320 320 0.300
τ25/310 310 0.120
τ25/300 300 0.035
τ25/290 290 0.010
τ25/280 280
τ25/270 270
τ25/260 260
τ25/250 250
Characteristics λ [nm]
τ10/2500 2,500 0.891
τ10/2325 2,325 0.933
τ10/1970 1,970 0.996
τ10/1530 1,530 0.996
τ10/1060 1,060 0.998
τ10/700 700 0.998
τ10/660 660 0.998
τ10/620 620 0.998
τ10/580 580 0.999
τ10/546 546 0.999
τ10/500 500 0.998
τ10/460 460 0.997
τ10/436 436 0.997
τ10/420 420 0.997
τ10/405 405 0.997
τ10/400 400 0.997
τ10/390 390 0.997
τ10/380 380 0.995
τ10/370 370 0.990
τ10/365 365 0.985
τ10/350 350 0.948
τ10/334 334 0.831
τ10/320 320 0.618
τ10/310 310 0.428
τ10/300 300 0.262
τ10/290 290 0.137
τ10/280 280 0.058
τ10/270 270
τ10/260 260
τ10/250 250
Partial Dispersion
Characteristics
Ps,t 0.2879
PC,s 0.5465
Pd,C 0.3062
Pe,d 0.2388
Pg,F 0.5359
Pi,h 0.7429
P's,t 0.2858
P'C',s 0.5909
P'd,C' 0.2554
P'e,d 0.2370
P'g,F' 0.4759
P'i,h 0.7373
Characteristics
ΔPC,t -0.1112
ΔPC,s -0.0533
ΔPF,e 0.0110
ΔPg,F 0.0342
ΔPi,g 0.1675
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