KZFSN4 - Schott 2000

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.613400 n_e = 1.616692	V_d = 44.29 V_e = 44.06	n_F - n_C = 0.013848 n_F' - n_C' = 0.013993	Coloring: 0.36 - 0.31 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 1.37994218 C2 = 0.168496708 C3 = 0.874885726 C4 = 0.00891159699 C5 = 0.040533407 C6 = 69.6628237

Refraction index
n _2.3254	1.574281
n _1.9701	1.581699
n _1.5296	1.589427
n _1.06	1.597321
n _t	1.598222
n _s	1.601977
n _r	1.606891
n _C	1.609241
n _C'	1.609900
n _0.6328	1.610517
n _D	1.613278
n _d	1.613400
n _e	1.616692
n _F	1.623089
n _F'	1.623894
n _g	1.630853
n _h	1.637446
n _i	1.649045
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7957
P_C,A'	0.3394
P_d,C	0.3003
P_e,C	0.5380
P_g,d	1.2602
P_g,F	0.5606
P_h,g	0.4761
P_i,g	1.3136
P_C',t	0.8433
P_e,C'	0.4904
P_F',e	0.5200
P_i,F'	1.8162

transmittance: 10 mm
τ_2.5	0.3
τ_2.3254	0.6
τ_1.9701	0.92
τ_1.5296	0.976
τ_1.06	0.998
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	0.998
τ_0.46	0.997
τ_0.4358	0.996
τ_0.42	0.994
τ_0.4047	0.991
τ_0.4	0.99
τ_0.39	0.985
τ_0.38	0.971
τ_0.37	0.959
τ_0.365	0.95
τ_0.35	0.88
τ_0.3341	0.76
τ_0.32	0.47
τ_0.31	0.25

transmittance: 25 mm
τ_2.5	0.05
τ_2.3254	0.28
τ_1.9701	0.81
τ_1.5296	0.94
τ_1.06	0.995
τ_0.7	0.995
τ_0.66	0.995
τ_0.62	0.995
τ_0.58	0.995
τ_0.54607	0.995
τ_0.5	0.995
τ_0.46	0.992
τ_0.4358	0.989
τ_0.42	0.986
τ_0.4047	0.978
τ_0.4	0.974
τ_0.39	0.962
τ_0.38	0.93
τ_0.37	0.9
τ_0.365	0.88
τ_0.35	0.72
τ_0.3341	0.51
τ_0.32	0.15
τ_0.31	0.03

Density: 3.2 g/cm³
Poisson coef.: 0.275
Young module: 600 Pa*10⁸
Knoop hardness: 450
Optical stress coef.: 3.13 1/Pa*10¹²

Climatic resistance: 3
Staining: 2
Resistance to acids: 52.3
Resistance to alkalis: 4.3
Phosphate resistance: 4.3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	45
20 ~ 300	55

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		2.1
20 ~ 40		3.2
60 ~ 80		3.5
-40 ~ -20	e	2.8
20 ~ 40	e	4
60 ~ 80	e	4.4
-40 ~ -20	g	3.5
20 ~ 40	g	5
60 ~ 80	g	5.5

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		4.3
20 ~ 40		4.6
60 ~ 80		4.6
-40 ~ -20	e	5
20 ~ 40	e	5.5
60 ~ 80	e	5.5
-40 ~ -20	g	5.8
20 ~ 40	g	6.5
60 ~ 80	g	6.6