SF5 - Schott 2000

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.672697 n_e = 1.677639	V_d = 32.20 V_e = 31.97	n_F - n_C = 0.020884 n_F' - n_C' = 0.021195	Coloring: 0.37 - 0.33 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 1.46141885 C2 = 0.247713019 C3 = 0.949995832 C4 = 0.0111826126 C5 = 0.0508594669 C6 = 112.041888

Refraction index
n _2.3254	1.632892
n _1.9701	1.637850
n _1.5296	1.643591
n _1.06	1.651043
n _t	1.652057
n _s	1.656639
n _r	1.663271
n _C	1.666610
n _C'	1.667561
n _0.6328	1.668456
n _D	1.672515
n _d	1.672697
n _e	1.677639
n _F	1.687495
n _F'	1.688757
n _g	1.699856
n _h	1.710690
n _i	1.730559
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6968
P_C,A'	0.3151
P_d,C	0.2914
P_e,C	0.5280
P_g,d	1.3004
P_g,F	0.5918
P_h,g	0.5187
P_i,g	1.4701
P_C',t	0.7423
P_e,C'	0.4825
P_F',e	0.5323
P_i,F'	2.0015

transmittance: 10 mm
τ_2.3254	0.9
τ_1.9701	0.963
τ_1.5296	0.998
τ_1.06	0.999
τ_0.7	0.999
τ_0.66	0.999
τ_0.62	0.999
τ_0.58	0.999
τ_0.54607	0.998
τ_0.5	0.997
τ_0.46	0.996
τ_0.4358	0.993
τ_0.42	0.99
τ_0.4047	0.983
τ_0.4	0.98
τ_0.39	0.971
τ_0.38	0.95
τ_0.37	0.92
τ_0.365	0.9
τ_0.35	0.7

transmittance: 25 mm
τ_2.3254	0.76
τ_1.9701	0.91
τ_1.5296	0.994
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	0.995
τ_0.5	0.993
τ_0.46	0.989
τ_0.4358	0.983
τ_0.42	0.975
τ_0.4047	0.958
τ_0.4	0.95
τ_0.39	0.93
τ_0.38	0.88
τ_0.37	0.82
τ_0.365	0.76
τ_0.35	0.41

Density: 4.07 g/cm³
Poisson coef.: 0.233
Young module: 560 Pa*10⁸
Knoop hardness: 410
Optical stress coef.: 2.28 1/Pa*10¹²
Abrasion: 2

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	82
20 ~ 300	90

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		0.9
20 ~ 40		2.1
60 ~ 80		2.8
-40 ~ -20	e	2.8
20 ~ 40	e	4.4
60 ~ 80	e	5.2
-40 ~ -20	g	5.1
20 ~ 40	g	6.9
60 ~ 80	g	8

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		3.1
20 ~ 40		3.5
60 ~ 80		3.9
-40 ~ -20	e	5.1
20 ~ 40	e	5.8
60 ~ 80	e	6.4
-40 ~ -20	g	7.4
20 ~ 40	g	8.4
60 ~ 80	g	9.2