N-KZFS4 - Schott 2000

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.613360 n_e = 1.616638	V_d = 44.49 V_e = 44.27	n_F - n_C = 0.013785 n_F' - n_C' = 0.013928	Coloring: 0.36 - 0.32 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 1.35055424 C2 = 0.197575506 C3 = 1.09962992 C4 = 0.0087628207 C5 = 0.0371767201 C6 = 90.3866994

Refraction index
n _2.3254	1.575346
n _1.9701	1.582327
n _1.5296	1.589709
n _1.06	1.597393
n _t	1.598280
n _s	1.601994
n _r	1.606877
n _C	1.609216
n _C'	1.609873
n _0.6328	1.610488
n _D	1.613238
n _d	1.613360
n _e	1.616638
n _F	1.623002
n _F'	1.623802
n _g	1.630708
n _h	1.637231
n _i	1.648651
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7933
P_C,A'	0.3393
P_d,C	0.3005
P_e,C	0.5383
P_g,d	1.2584
P_g,F	0.5589
P_h,g	0.4732
P_i,g	1.3015
P_C',t	0.8410
P_e,C'	0.4907
P_F',e	0.5196
P_i,F'	1.8025

transmittance: 10 mm
τ_2.5	0.56
τ_2.3254	0.79
τ_1.9701	0.965
τ_1.5296	0.988
τ_1.06	0.998
τ_0.7	0.998
τ_0.66	0.997
τ_0.62	0.997
τ_0.58	0.997
τ_0.54607	0.997
τ_0.5	0.995
τ_0.46	0.99
τ_0.4358	0.987
τ_0.42	0.984
τ_0.4047	0.981
τ_0.4	0.979
τ_0.39	0.971
τ_0.38	0.963
τ_0.37	0.94
τ_0.365	0.92
τ_0.35	0.82
τ_0.3341	0.47

transmittance: 25 mm
τ_2.5	0.23
τ_2.3254	0.56
τ_1.9701	0.92
τ_1.5296	0.97
τ_1.06	0.996
τ_0.7	0.994
τ_0.66	0.993
τ_0.62	0.993
τ_0.58	0.993
τ_0.54607	0.992
τ_0.5	0.987
τ_0.46	0.976
τ_0.4358	0.968
τ_0.42	0.961
τ_0.4047	0.952
τ_0.4	0.95
τ_0.39	0.93
τ_0.38	0.91
τ_0.37	0.86
τ_0.365	0.82
τ_0.35	0.6
τ_0.3341	0.15

Density: 3 g/cm³
Poisson coef.: 0.241
Young module: 780 Pa*10⁸
Knoop hardness: 520
Optical stress coef.: 3.9 1/Pa*10¹²
Abrasion: 3

Climatic resistance: 1
Staining: 1
Resistance to acids: 3.4
Resistance to alkalis: 1.2
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	73
20 ~ 300	82

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		0.5
20 ~ 40		1.3
60 ~ 80		1.7
-40 ~ -20	e	1.3
20 ~ 40	e	2.3
60 ~ 80	e	2.8
-40 ~ -20	g	2.2
20 ~ 40	g	3.2
60 ~ 80	g	3.9

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		2.7
20 ~ 40		2.7
60 ~ 80		2.8
-40 ~ -20	e	3.5
20 ~ 40	e	3.7
60 ~ 80	e	3.9
-40 ~ -20	g	4.4
20 ~ 40	g	4.7
60 ~ 80	g	5