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N-LAK21

Glass Code:  640601.374

“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 1.64049 νd 60.10
ne 1.64304 νe 59.86
nF-nC 0.010657 nF'-nC' 0.010743
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Download Data sheet N-LAK21
Article Details
SCHOTT
Article
Glass type
L
W
T
DIA
Step
nd
Step
vd
nd
vd
Weight
 
Technical Details
Refractive Indices
Characteristics λ [nm]
n2,325.4 2,325.4 1.60776
n1,970.1 1,970.1 1.61416
n1,529.6 1,529.6 1.62086
n1,060.0 1,060.0 1.62759
nt 1,014.0 1.62834
ns 852.1 1.63143
nr 706.5 1.63538
nC 656.3 1.63724
nC' 643.8 1.63776
Characteristics λ [nm]
n632.8 632.8 1.63825
nD 589.3 1.64040
nd 587.6 1.64049
ne 546.1 1.64304
nF 486.1 1.64790
nF' 480.0 1.64850
ng 435.8 1.65366
nh 404.7 1.65844
ni 365.0 1.66657
Characteristics λ [nm]
n334.1 334.1 1.67532
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 0.210
τ25/2325 2,325 0.490
τ25/1970 1,970 0.870
τ25/1530 1,530 0.970
τ25/1060 1,060 0.994
τ25/700 700 0.994
τ25/660 660 0.991
τ25/620 620 0.990
τ25/580 580 0.992
τ25/546 546 0.992
τ25/500 500 0.988
τ25/460 460 0.976
τ25/436 436 0.969
τ25/420 420 0.963
τ25/405 405 0.955
τ25/400 400 0.950
τ25/390 390 0.930
τ25/380 380 0.900
τ25/370 370 0.830
τ25/365 365 0.780
τ25/350 350 0.570
τ25/334 334 0.240
τ25/320 320 0.040
τ25/310 310
τ25/300 300
τ25/290 290
τ25/280 280
τ25/270 270
τ25/260 260
τ25/250 250
Characteristics λ [nm]
τ10/2500 2,500 0.536
τ10/2325 2,325 0.752
τ10/1970 1,970 0.946
τ10/1530 1,530 0.988
τ10/1060 1,060 0.998
τ10/700 700 0.998
τ10/660 660 0.996
τ10/620 620 0.996
τ10/580 580 0.997
τ10/546 546 0.997
τ10/500 500 0.995
τ10/460 460 0.990
τ10/436 436 0.987
τ10/420 420 0.985
τ10/405 405 0.982
τ10/400 400 0.979
τ10/390 390 0.971
τ10/380 380 0.959
τ10/370 370 0.928
τ10/365 365 0.905
τ10/350 350 0.799
τ10/334 334 0.565
τ10/320 320 0.250
τ10/310 310 0.060
τ10/300 300
τ10/290 290
τ10/280 280
τ10/270 270
τ10/260 260
τ10/250 250
Partial Dispersion
Characteristics
Ps,t 0.2900
PC,s 0.5453
Pd,C 0.3052
Pe,d 0.2385
Pg,F 0.5411
Pi,h 0.7630
P's,t 0.2877
P'C',s 0.5892
P'd,C' 0.2545
P'e,d 0.2366
P'g,F' 0.4804
P'i,h 0.7569
Characteristics
ΔPC,t 0.0052
ΔPC,s 0.0023
ΔPF,e -0.0005
ΔPg,F -0.0017
ΔPi,g -0.0090
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