N-BAF10 - Schott 2000

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.670029 n_e = 1.673411	V_d = 47.11 V_e = 46.82	n_F - n_C = 0.014222 n_F' - n_C' = 0.014380	Coloring: 0.39 - 0.35 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 1.5851495 C2 = 0.143559385 C3 = 1.08521269 C4 = 0.00926681282 C5 = 0.0424489805 C6 = 105.613573

Refraction index
n _2.3254	1.635238
n _1.9701	1.640940
n _1.5296	1.647142
n _1.06	1.654042
n _t	1.654883
n _s	1.658494
n _r	1.663394
n _C	1.665778
n _C'	1.666450
n _0.6328	1.667079
n _D	1.669904
n _d	1.670029
n _e	1.673411
n _F	1.680000
n _F'	1.680830
n _g	1.688006
n _h	1.694801
n _i	1.706737
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7660
P_C,A'	0.3337
P_d,C	0.2989
P_e,C	0.5366
P_g,d	1.2639
P_g,F	0.5629
P_h,g	0.4777
P_i,g	1.3170
P_C',t	0.8132
P_e,C'	0.4894
P_F',e	0.5216
P_i,F'	1.8216

transmittance: 10 mm
τ_2.5	0.73
τ_2.3254	0.86
τ_1.9701	0.967
τ_1.5296	0.992
τ_1.06	0.998
τ_0.7	0.997
τ_0.66	0.996
τ_0.62	0.995
τ_0.58	0.995
τ_0.54607	0.995
τ_0.5	0.991
τ_0.46	0.984
τ_0.4358	0.976
τ_0.42	0.968
τ_0.4047	0.95
τ_0.4	0.94
τ_0.39	0.9
τ_0.38	0.83
τ_0.37	0.69
τ_0.365	0.58
τ_0.35	0.16

transmittance: 25 mm
τ_2.5	0.45
τ_2.3254	0.68
τ_1.9701	0.92
τ_1.5296	0.98
τ_1.06	0.994
τ_0.7	0.993
τ_0.66	0.989
τ_0.62	0.987
τ_0.58	0.988
τ_0.54607	0.987
τ_0.5	0.978
τ_0.46	0.96
τ_0.4358	0.94
τ_0.42	0.92
τ_0.4047	0.88
τ_0.4	0.86
τ_0.39	0.77
τ_0.38	0.63
τ_0.37	0.4
τ_0.365	0.26
τ_0.35	0.01

Density: 3.75 g/cm³
Poisson coef.: 0.271
Young module: 890 Pa*10⁸
Knoop hardness: 620
Optical stress coef.: 2.37 1/Pa*10¹²
Abrasion: 4

Climatic resistance: 1
Staining: 0
Resistance to acids: 4.3
Resistance to alkalis: 1.3
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	62
20 ~ 300	70

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		1.5
20 ~ 40		2.4
60 ~ 80		2.9
-40 ~ -20	e	2.4
20 ~ 40	e	3.5
60 ~ 80	e	4.1
-40 ~ -20	g	3.3
20 ~ 40	g	4.5
60 ~ 80	g	5.3

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		3.7
20 ~ 40		3.8
60 ~ 80		4
-40 ~ -20	e	4.7
20 ~ 40	e	4.9
60 ~ 80	e	5.2
-40 ~ -20	g	5.6
20 ~ 40	g	6
60 ~ 80	g	6.4