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N-FK58

Glass Code:  456909.365

“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 1.45600 νd 90.90
ne 1.45720 νe 90.47
nF-nC 0.005017 nF'-nC' 0.005053
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Download Data sheet N-FK58
Technical Details
Refractive Indices
Characteristics λ [nm]
n2,325.4 2,325.4 1.44114
n1,970.1 1,970.1 1.44388
n1,529.6 1,529.6 1.44683
n1,060.0 1,060.0 1.44991
nt 1,014.0 1.45026
ns 852.1 1.45171
nr 706.5 1.45358
nC 656.3 1.45446
nC' 643.8 1.45471
Characteristics λ [nm]
n632.8 632.8 1.45494
nD 589.3 1.45596
nd 587.6 1.45600
ne 546.1 1.45720
nF 486.1 1.45948
nF' 480.0 1.45976
ng 435.8 1.46216
nh 404.7 1.46436
ni 365.0 1.46807
Characteristics λ [nm]
n334.1 334.1 1.47199
n312.6 312.6
n296.7 296.7
n280.4 280.4
n248.3 248.3
Internal Transmittance
Characteristics λ [nm]
τ25/2500 2,500 0.993
τ25/2325 2,325 0.996
τ25/1970 1,970 0.998
τ25/1530 1,530 0.998
τ25/1060 1,060 0.995
τ25/700 700 0.993
τ25/660 660 0.993
τ25/620 620 0.994
τ25/580 580 0.994
τ25/546 546 0.995
τ25/500 500 0.994
τ25/460 460 0.992
τ25/436 436 0.991
τ25/420 420 0.991
τ25/405 405 0.991
τ25/400 400 0.991
τ25/390 390 0.990
τ25/380 380 0.987
τ25/370 370 0.980
τ25/365 365 0.975
τ25/350 350 0.940
τ25/334 334 0.830
τ25/320 320 0.610
τ25/310 310 0.400
τ25/300 300 0.200
τ25/290 290 0.080
τ25/280 280 0.028
τ25/270 270 0.010
τ25/260 260 0.005
τ25/250 250
Characteristics λ [nm]
τ10/2500 2,500 0.997
τ10/2325 2,325 0.998
τ10/1970 1,970 0.999
τ10/1530 1,530 0.999
τ10/1060 1,060 0.998
τ10/700 700 0.997
τ10/660 660 0.997
τ10/620 620 0.997
τ10/580 580 0.998
τ10/546 546 0.998
τ10/500 500 0.998
τ10/460 460 0.997
τ10/436 436 0.996
τ10/420 420 0.996
τ10/405 405 0.996
τ10/400 400 0.996
τ10/390 390 0.996
τ10/380 380 0.995
τ10/370 370 0.992
τ10/365 365 0.990
τ10/350 350 0.976
τ10/334 334 0.928
τ10/320 320 0.821
τ10/310 310 0.693
τ10/300 300 0.525
τ10/290 290 0.364
τ10/280 280 0.239
τ10/270 270 0.152
τ10/260 260 0.109
τ10/250 250 0.090
Partial Dispersion
Characteristics
Ps,t 0.2894
PC,s 0.5481
Pd,C 0.3066
Pe,d 0.2388
Pg,F 0.5347
Pi,h 0.7387
P's,t 0.2873
P'C',s 0.5927
P'd,C' 0.2557
P'e,d 0.2371
P'g,F' 0.4749
P'i,h 0.7334
Characteristics
ΔPC,t -0.1386
ΔPC,s -0.0667
ΔPF,e 0.0140
ΔPg,F 0.0438
ΔPi,g 0.2157
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