SCHOTT N-BK7®  517642.251

optical glass klein 4zu3.jpg

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

Find more information in the tabs below or on our website.

Compare glass types with our Interactive Abbe Diagram.

Characteristics
nd 1.51680 νd 64.17
ne 1.51872 νe 63.96
nF-nC 0.008054 nF'-nC' 0.008110
Glass type
Article L
W
T
DIA
nd
vd
STEP
nd
STEP
vd
Weight
Characteristics λ [nm]
n2,325.4 2,325.4 1.48921
n1,970.1 1,970.1 1.49495
n1,529.6 1,529.6 1.50091
n1,060.0 1,060.0 1.50669
nt 1,014.0 1.50731
ns 852.1 1.50980
nr 706.5 1.51289
nC 656.3 1.51432
nC' 643.8 1.51472
Characteristics λ [nm]
n632.8 632.8 1.51509
nD 589.3 1.51673
nd 587.6 1.51680
ne 546.1 1.51872
nF 486.1 1.52238
nF' 480.0 1.52283
ng 435.8 1.52668
nh 404.7 1.53024
ni 365.0 1.53627
Characteristics λ [nm]
n334.1 334.1 1.54272
n312.6 312.6 1.54862
n296.7 296.7
n280.4 280.4
n248.3 248.3
Characteristics λ [nm]
τ25/2500 2,500 0.360
τ25/2325 2,325 0.560
τ25/1970 1,970 0.840
τ25/1530 1,530 0.980
τ25/1060 1,060 0.997
τ25/700 700 0.996
τ25/660 660 0.994
τ25/620 620 0.994
τ25/580 580 0.995
τ25/546 546 0.996
τ25/500 500 0.994
τ25/460 460 0.993
τ25/436 436 0.992
τ25/420 420 0.993
τ25/405 405 0.993
τ25/400 400 0.992
τ25/390 390 0.989
τ25/380 380 0.983
τ25/370 370 0.977
τ25/365 365 0.971
τ25/350 350 0.920
τ25/334 334 0.780
τ25/320 320 0.520
τ25/310 310 0.250
τ25/300 300 0.050
τ25/290 290
τ25/280 280
τ25/270 270
τ25/260 260
τ25/250 250
Characteristics λ [nm]
τ10/2500 2,500 0.665
τ10/2325 2,325 0.793
τ10/1970 1,970 0.933
τ10/1530 1,530 0.992
τ10/1060 1,060 0.999
τ10/700 700 0.998
τ10/660 660 0.998
τ10/620 620 0.998
τ10/580 580 0.998
τ10/546 546 0.998
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 0.996
τ10/380 380 0.993
τ10/370 370 0.991
τ10/365 365 0.988
τ10/350 350 0.967
τ10/334 334 0.905
τ10/320 320 0.770
τ10/310 310 0.574
τ10/300 300 0.292
τ10/290 290 0.063
τ10/280 280
τ10/270 270
τ10/260 260
τ10/250 250
Characteristics
Ps,t 0.3098
PC,s 0.5612
Pd,C 0.3076
Pe,d 0.2386
Pg,F 0.5349
Pi,h 0.7483
P's,t 0.3076
P'C',s 0.6062
P'd,C' 0.2566
P'e,d 0.2370
P'g,F' 0.4754
P'i,h 0.7432
Characteristics
ΔPC,t 0.0216
ΔPC,s 0.0087
ΔPF,e -0.0009
ΔPg,F -0.0009
ΔPi,g 0.0035