SF1 - Schott 2000

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.717359 n_e = 1.723104	V_d = 29.51 V_e = 29.29	n_F - n_C = 0.024306 n_F' - n_C' = 0.024687	Coloring: 0.38 - 0.34 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 1.55912923 C2 = 0.284246288 C3 = 0.968842926 C4 = 0.0121481001 C5 = 0.0534549042 C6 = 112.174809

Refraction index
n _2.3254	1.673515
n _1.9701	1.678545
n _1.5296	1.684494
n _1.06	1.692575
n _t	1.693707
n _s	1.698876
n _r	1.706465
n _C	1.710313
n _C'	1.711412
n _0.6328	1.712446
n _D	1.717148
n _d	1.717359
n _e	1.723104
n _F	1.734620
n _F'	1.736099
n _g	1.749163
n _h	1.762005
n _i	1.785803
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6831
P_C,A'	0.3114
P_d,C	0.2898
P_e,C	0.5262
P_g,d	1.3084
P_g,F	0.5983
P_h,g	0.5283
P_i,g	1.5073
P_C',t	0.7283
P_e,C'	0.4810
P_F',e	0.5346
P_i,F'	2.0448

transmittance: 10 mm
τ_2.5	0.85
τ_2.3254	0.89
τ_1.9701	0.963
τ_1.5296	0.995
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	0.99
τ_0.42	0.985
τ_0.4047	0.976
τ_0.4	0.971
τ_0.39	0.954
τ_0.38	0.92
τ_0.37	0.85
τ_0.365	0.78
τ_0.35	0.28

transmittance: 25 mm
τ_2.5	0.67
τ_2.3254	0.74
τ_1.9701	0.91
τ_1.5296	0.988
τ_1.06	0.997
τ_0.7	0.996
τ_0.66	0.995
τ_0.62	0.995
τ_0.58	0.996
τ_0.54607	0.995
τ_0.5	0.992
τ_0.46	0.984
τ_0.4358	0.976
τ_0.42	0.964
τ_0.4047	0.94
τ_0.4	0.93
τ_0.39	0.89
τ_0.38	0.81
τ_0.37	0.66
τ_0.365	0.53
τ_0.35	0.04

Density: 4.46 g/cm³
Poisson coef.: 0.232
Young module: 560 Pa*10⁸
Knoop hardness: 390
Optical stress coef.: 1.8 1/Pa*10¹²
Abrasion: 1

Climatic resistance: 2
Staining: 1
Resistance to acids: 3.2
Resistance to alkalis: 2.3
Phosphate resistance: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	81
20 ~ 300	88

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		2.2
20 ~ 40		3.6
60 ~ 80		4.2
-40 ~ -20	e	4.7
20 ~ 40	e	6.4
60 ~ 80	e	7.3
-40 ~ -20	g	7.7
20 ~ 40	g	9.8
60 ~ 80	g	10.9

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		4.5
20 ~ 40		5
60 ~ 80		5.3
-40 ~ -20	e	7
20 ~ 40	e	7.9
60 ~ 80	e	8.4
-40 ~ -20	g	10.1
20 ~ 40	g	11.3
60 ~ 80	g	12.1