N-KZFS2 - Schott 2000

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.558359 n_e = 1.560823	V_d = 54.00 V_e = 53.83	n_F - n_C = 0.010338 n_F' - n_C' = 0.010418	Coloring: 0.34 - 0.30 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 1.23697554 C2 = 0.153569376 C3 = 0.903976272 C4 = 0.00747170505 C5 = 0.0308053556 C6 = 70.1731084

Refraction index
n _2.3254	1.522386
n _1.9701	1.530108
n _1.5296	1.537978
n _1.06	1.545459
n _t	1.546254
n _s	1.549438
n _r	1.553372
n _C	1.555194
n _C'	1.555701
n _0.6328	1.556173
n _D	1.558267
n _d	1.558359
n _e	1.560823
n _F	1.565533
n _F'	1.566119
n _g	1.571135
n _h	1.575803
n _i	1.583824
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8647
P_C,A'	0.3559
P_d,C	0.3061
P_e,C	0.5444
P_g,d	1.2357
P_g,F	0.5418
P_h,g	0.4515
P_i,g	1.2273
P_C',t	0.9137
P_e,C'	0.4954
P_F',e	0.5122
P_i,F'	1.7125

transmittance: 10 mm
τ_2.5	0.28
τ_2.3254	0.58
τ_1.9701	0.91
τ_1.5296	0.976
τ_1.06	0.996
τ_0.7	0.998
τ_0.66	0.998
τ_0.62	0.998
τ_0.58	0.998
τ_0.54607	0.998
τ_0.5	0.997
τ_0.46	0.995
τ_0.4358	0.992
τ_0.42	0.99
τ_0.4047	0.987
τ_0.4	0.985
τ_0.39	0.98
τ_0.38	0.971
τ_0.37	0.963
τ_0.365	0.954
τ_0.35	0.91
τ_0.3341	0.81
τ_0.32	0.57
τ_0.31	0.25

transmittance: 25 mm
τ_2.5	0.04
τ_2.3254	0.26
τ_1.9701	0.8
τ_1.5296	0.94
τ_1.06	0.991
τ_0.7	0.996
τ_0.66	0.994
τ_0.62	0.994
τ_0.58	0.994
τ_0.54607	0.994
τ_0.5	0.992
τ_0.46	0.987
τ_0.4358	0.981
τ_0.42	0.975
τ_0.4047	0.967
τ_0.4	0.963
τ_0.39	0.95
τ_0.38	0.93
τ_0.37	0.91
τ_0.365	0.89
τ_0.35	0.8
τ_0.3341	0.59
τ_0.32	0.24
τ_0.31	0.03

Density: 2.55 g/cm³
Poisson coef.: 0.266
Young module: 660 Pa*10⁸
Knoop hardness: 490
Optical stress coef.: 4.02 1/Pa*10¹²
Abrasion: 3

Climatic resistance: 1
Staining: 4
Resistance to acids: 52.3
Resistance to alkalis: 4.3
Phosphate resistance: 4.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	44
20 ~ 300	54

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		2.5
20 ~ 40		3.3
60 ~ 80		3.8
-40 ~ -20	e	3.1
20 ~ 40	e	3.9
60 ~ 80	e	4.5
-40 ~ -20	g	3.5
20 ~ 40	g	4.5
60 ~ 80	g	5.1

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		4.6
20 ~ 40		4.6
60 ~ 80		4.8
-40 ~ -20	e	5.2
20 ~ 40	e	5.3
60 ~ 80	e	5.5
-40 ~ -20	g	5.7
20 ~ 40	g	5.9
60 ~ 80	g	6.2