F2 - Schott 2000

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.620040 n_e = 1.624080	V_d = 36.36 V_e = 36.10	n_F - n_C = 0.017049 n_F' - n_C' = 0.017283	Coloring: 0.35 - 0.33 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 1.34533359 C2 = 0.209073176 C3 = 0.937357162 C4 = 0.00997743871 C5 = 0.0470450767 C6 = 111.886764

Refraction index
n _2.3254	1.584653
n _1.9701	1.589576
n _1.5296	1.595129
n _1.06	1.601901
n _t	1.602785
n _s	1.606708
n _r	1.612265
n _C	1.615031
n _C'	1.615817
n _0.6328	1.616555
n _D	1.619891
n _d	1.620040
n _e	1.624080
n _F	1.632081
n _F'	1.633100
n _g	1.642017
n _h	1.650638
n _i	1.666225
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7182
P_C,A'	0.3208
P_d,C	0.2937
P_e,C	0.5307
P_g,d	1.2890
P_g,F	0.5827
P_h,g	0.5056
P_i,g	1.4198
P_C',t	0.7643
P_e,C'	0.4846
P_F',e	0.5290
P_i,F'	1.9428

transmittance: 10 mm
τ_2.5	0.81
τ_2.3254	0.86
τ_1.9701	0.95
τ_1.5296	0.995
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	0.998
τ_0.5	0.997
τ_0.46	0.996
τ_0.4358	0.996
τ_0.42	0.995
τ_0.4047	0.994
τ_0.4	0.993
τ_0.39	0.989
τ_0.38	0.984
τ_0.37	0.976
τ_0.365	0.967
τ_0.35	0.91
τ_0.3341	0.54

transmittance: 25 mm
τ_2.5	0.59
τ_2.3254	0.69
τ_1.9701	0.88
τ_1.5296	0.987
τ_1.06	0.996
τ_0.7	0.996
τ_0.66	0.995
τ_0.62	0.995
τ_0.58	0.995
τ_0.54607	0.995
τ_0.5	0.993
τ_0.46	0.991
τ_0.4358	0.989
τ_0.42	0.987
τ_0.4047	0.984
τ_0.4	0.982
τ_0.39	0.973
τ_0.38	0.96
τ_0.37	0.94
τ_0.365	0.92
τ_0.35	0.78
τ_0.3341	0.21

Density: 3.61 g/cm³
Poisson coef.: 0.22
Young module: 570 Pa*10⁸
Knoop hardness: 420
Optical stress coef.: 2.81 1/Pa*10¹²
Abrasion: 2

Climatic resistance: 1
Staining: 0
Resistance to acids: 1
Resistance to alkalis: 2.3
Phosphate resistance: 1.3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	82
20 ~ 300	92

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		0.3
20 ~ 40		1.3
60 ~ 80		1.9
-40 ~ -20	e	1.6
20 ~ 40	e	3
60 ~ 80	e	3.7
-40 ~ -20	g	3.2
20 ~ 40	g	4.8
60 ~ 80	g	5.7

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		2.4
20 ~ 40		2.7
60 ~ 80		3
-40 ~ -20	e	3.9
20 ~ 40	e	4.4
60 ~ 80	e	4.8
-40 ~ -20	g	5.5
20 ~ 40	g	6.3
60 ~ 80	g	6.8