SF11 - Schott 2000

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.784719 n_e = 1.791898	V_d = 25.75 V_e = 25.54	n_F - n_C = 0.030466 n_F' - n_C' = 0.030997	Coloring: 0.44 - 0.39 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 1.73848403 C2 = 0.311168974 C3 = 1.17490871 C4 = 0.0136068604 C5 = 0.0615960463 C6 = 121.922711

Refraction index
n _2.3254	1.732944
n _1.9701	1.738434
n _1.5296	1.745064
n _1.06	1.754446
n _t	1.755792
n _s	1.762004
n _r	1.771254
n _C	1.775987
n _C'	1.777343
n _0.6328	1.778622
n _D	1.784457
n _d	1.784719
n _e	1.791898
n _F	1.806454
n _F'	1.808341
n _g	1.825181
n _h	1.842080
n _i	1.874473
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6628
P_C,A'	0.3047
P_d,C	0.2866
P_e,C	0.5222
P_g,d	1.3280
P_g,F	0.6146
P_h,g	0.5546
P_i,g	1.6178
P_C',t	0.7073
P_e,C'	0.4777
P_F',e	0.5396
P_i,F'	2.1706

transmittance: 10 mm
τ_2.3254	0.87
τ_1.9701	0.976
τ_1.5296	0.992
τ_1.06	0.996
τ_0.7	0.998
τ_0.66	0.997
τ_0.62	0.997
τ_0.58	0.997
τ_0.54607	0.996
τ_0.5	0.99
τ_0.46	0.971
τ_0.4358	0.93
τ_0.42	0.86
τ_0.4047	0.65
τ_0.4	0.54
τ_0.39	0.21

transmittance: 25 mm
τ_2.3254	0.7
τ_1.9701	0.94
τ_1.5296	0.98
τ_1.06	0.99
τ_0.7	0.994
τ_0.66	0.993
τ_0.62	0.992
τ_0.58	0.992
τ_0.54607	0.99
τ_0.5	0.976
τ_0.46	0.93
τ_0.4358	0.84
τ_0.42	0.69
τ_0.4047	0.34
τ_0.4	0.21
τ_0.39	0.02

Density: 4.74 g/cm³
Poisson coef.: 0.235
Young module: 660 Pa*10⁸
Knoop hardness: 450
Optical stress coef.: 1.33 1/Pa*10¹²
Abrasion: 1

Climatic resistance: 1
Staining: 0
Resistance to acids: 1
Resistance to alkalis: 1.2
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	61
20 ~ 300	68

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		6.1
20 ~ 40		7.7
60 ~ 80		8.4
-40 ~ -20	e	9.2
20 ~ 40	e	11.3
60 ~ 80	e	12.4
-40 ~ -20	g	13.3
20 ~ 40	g	16
60 ~ 80	g	17.4

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		8.4
20 ~ 40		9.2
60 ~ 80		9.6
-40 ~ -20	e	11.7
20 ~ 40	e	12.9
60 ~ 80	e	13.6
-40 ~ -20	g	15.8
20 ~ 40	g	17.6
60 ~ 80	g	18.7