SF14 - Schott 2000

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.761819 n_e = 1.768589	V_d = 26.52 V_e = 26.31	n_F - n_C = 0.028718 n_F' - n_C' = 0.029211	Coloring: 0.43 - 0.39 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 1.69182538 C2 = 0.285919934 C3 = 1.12595145 C4 = 0.0133151542 C5 = 0.0612647445 C6 = 118.405242

Refraction index
n _2.3254	1.712108
n _1.9701	1.717555
n _1.5296	1.724070
n _1.06	1.733129
n _t	1.734415
n _s	1.740330
n _r	1.749098
n _C	1.753574
n _C'	1.754855
n _0.6328	1.756064
n _D	1.761572
n _d	1.761819
n _e	1.768589
n _F	1.782292
n _F'	1.784067
n _g	1.799885
n _h	1.815725
n _i	1.845999
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6671
P_C,A'	0.3059
P_d,C	0.2871
P_e,C	0.5228
P_g,d	1.3254
P_g,F	0.6125
P_h,g	0.5515
P_i,g	1.6057
P_C',t	0.7117
P_e,C'	0.4782
P_F',e	0.5389
P_i,F'	2.1565

transmittance: 10 mm
τ_2.3254	0.9
τ_1.9701	0.982
τ_1.5296	0.998
τ_1.06	0.999
τ_0.7	0.999
τ_0.66	0.998
τ_0.62	0.998
τ_0.58	0.996
τ_0.54607	0.996
τ_0.5	0.99
τ_0.46	0.976
τ_0.4358	0.95
τ_0.42	0.89
τ_0.4047	0.7
τ_0.4	0.6
τ_0.39	0.28

transmittance: 25 mm
τ_2.3254	0.77
τ_1.9701	0.955
τ_1.5296	0.995
τ_1.06	0.998
τ_0.7	0.998
τ_0.66	0.996
τ_0.62	0.995
τ_0.58	0.99
τ_0.54607	0.989
τ_0.5	0.975
τ_0.46	0.94
τ_0.4358	0.87
τ_0.42	0.74
τ_0.4047	0.41
τ_0.4	0.28
τ_0.39	0.04

Density: 4.54 g/cm³
Poisson coef.: 0.231
Young module: 650 Pa*10⁸
Knoop hardness: 430
Optical stress coef.: 1.62 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	66
20 ~ 300	74

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		4.6
20 ~ 40		6.1
60 ~ 80		6.8
-40 ~ -20	e	7.4
20 ~ 40	e	9.4
60 ~ 80	e	10.4
-40 ~ -20	g	11
20 ~ 40	g	13.6
60 ~ 80	g	15

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		6.9
20 ~ 40		7.6
60 ~ 80		8
-40 ~ -20	e	9.8
20 ~ 40	e	11
60 ~ 80	e	11.6
-40 ~ -20	g	13.5
20 ~ 40	g	15.2
60 ~ 80	g	16.2