N-SF10 - Schott 2000

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.728277 n_e = 1.734298	V_d = 28.53 V_e = 28.30	n_F - n_C = 0.025524 n_F' - n_C' = 0.025941	Coloring: 0.42 - 0.36 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 1.62153902 C2 = 0.256287842 C3 = 1.64447552 C4 = 0.0122241457 C5 = 0.0595736775 C6 = 147.468793

Refraction index
n _2.3254	1.679809
n _1.9701	1.685969
n _1.5296	1.693082
n _1.06	1.702170
n _t	1.703395
n _s	1.708907
n _r	1.716880
n _C	1.720906
n _C'	1.722055
n _0.6328	1.723137
n _D	1.728056
n _d	1.728277
n _e	1.734298
n _F	1.746430
n _F'	1.747996
n _g	1.761914
n _h	1.775776
n _i	1.802057
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6860
P_C,A'	0.3105
P_d,C	0.2887
P_e,C	0.5247
P_g,d	1.3178
P_g,F	0.6066
P_h,g	0.5430
P_i,g	1.5727
P_C',t	0.7310
P_e,C'	0.4796
P_F',e	0.5366
P_i,F'	2.1180

transmittance: 10 mm
τ_2.5	0.85
τ_2.3254	0.9
τ_1.9701	0.971
τ_1.5296	0.994
τ_1.06	0.996
τ_0.7	0.993
τ_0.66	0.99
τ_0.62	0.991
τ_0.58	0.991
τ_0.54607	0.989
τ_0.5	0.978
τ_0.46	0.963
τ_0.4358	0.95
τ_0.42	0.92
τ_0.4047	0.87
τ_0.4	0.84
τ_0.39	0.73
τ_0.38	0.53

transmittance: 25 mm
τ_2.5	0.66
τ_2.3254	0.76
τ_1.9701	0.93
τ_1.5296	0.985
τ_1.06	0.99
τ_0.7	0.983
τ_0.66	0.976
τ_0.62	0.977
τ_0.58	0.978
τ_0.54607	0.973
τ_0.5	0.95
τ_0.46	0.91
τ_0.4358	0.87
τ_0.42	0.82
τ_0.4047	0.7
τ_0.4	0.64
τ_0.39	0.45
τ_0.38	0.2

Density: 3.05 g/cm³
Poisson coef.: 0.252
Young module: 870 Pa*10⁸
Knoop hardness: 540
Optical stress coef.: 2.92 1/Pa*10¹²
Abrasion: 5

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	94
20 ~ 300	108

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		-2.7
20 ~ 40		-2
60 ~ 80		-1.7
-40 ~ -20	e	-1.1
20 ~ 40	e	-0.1
60 ~ 80	e	0.5
-40 ~ -20	g	1
20 ~ 40	g	2.5
60 ~ 80	g	3.4

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		-0.4
20 ~ 40		-0.5
60 ~ 80		-0.5
-40 ~ -20	e	1.3
20 ~ 40	e	1.5
60 ~ 80	e	1.7
-40 ~ -20	g	3.4
20 ~ 40	g	4.1
60 ~ 80	g	4.6