KZFSN5 - Schott 2000

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.654116 n_e = 1.658034	V_d = 39.62 V_e = 39.40	n_F - n_C = 0.016506 n_F' - n_C' = 0.016700	Coloring: 0.37 - 0.34 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 1.47727858 C2 = 0.191686941 C3 = 0.897333608 C4 = 0.00975488335 C5 = 0.0450495404 C6 = 67.8786495

Refraction index
n _2.3254	1.611078
n _1.9701	1.618801
n _1.5296	1.626923
n _1.06	1.635483
n _t	1.636489
n _s	1.640749
n _r	1.646444
n _C	1.649200
n _C'	1.649976
n _0.6328	1.650704
n _D	1.653971
n _d	1.654116
n _e	1.658034
n _F	1.665707
n _F'	1.666677
n _g	1.675116
n _h	1.683189
n _i	1.697594
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7700
P_C,A'	0.3328
P_d,C	0.2978
P_e,C	0.5351
P_g,d	1.2721
P_g,F	0.5700
P_h,g	0.4891
P_i,g	1.3617
P_C',t	0.8170
P_e,C'	0.4881
P_F',e	0.5236
P_i,F'	1.8729

transmittance: 10 mm
τ_2.5	0.25
τ_2.3254	0.57
τ_1.9701	0.9
τ_1.5296	0.967
τ_1.06	0.999
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	0.994
τ_0.4358	0.991
τ_0.42	0.988
τ_0.4047	0.98
τ_0.4	0.976
τ_0.39	0.967
τ_0.38	0.94
τ_0.37	0.89
τ_0.365	0.84
τ_0.35	0.51

transmittance: 25 mm
τ_2.5	0.03
τ_2.3254	0.24
τ_1.9701	0.77
τ_1.5296	0.92
τ_1.06	0.997
τ_0.7	0.996
τ_0.66	0.996
τ_0.62	0.996
τ_0.58	0.996
τ_0.54607	0.995
τ_0.5	0.992
τ_0.46	0.985
τ_0.4358	0.978
τ_0.42	0.97
τ_0.4047	0.95
τ_0.4	0.94
τ_0.39	0.92
τ_0.38	0.85
τ_0.37	0.75
τ_0.365	0.65
τ_0.35	0.19

Density: 3.46 g/cm³
Poisson coef.: 0.275
Young module: 650 Pa*10⁸
Knoop hardness: 460
Optical stress coef.: 2.89 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	57

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		2.2
20 ~ 40		3.3
60 ~ 80		3.8
-40 ~ -20	e	3.2
20 ~ 40	e	4.4
60 ~ 80	e	5.1
-40 ~ -20	g	4.3
20 ~ 40	g	5.6
60 ~ 80	g	6.4

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		4.4
20 ~ 40		4.7
60 ~ 80		4.9
-40 ~ -20	e	5.5
20 ~ 40	e	5.9
60 ~ 80	e	6.2
-40 ~ -20	g	6.6
20 ~ 40	g	7.1
60 ~ 80	g	7.6