S-BAH11 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.666717 n_e = 1.669999	V_d = 48.32 V_e = 48.03	n_F - n_C = 0.013796 n_F' - n_C' = 0.013947	Coloring: 0.34 - 0.39 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.5713886 C2 = 0.147869313 C3 = 1.28092846 C4 = 0.00910807936 C5 = 0.0402401684 C6 = 130.399367

Refraction index
n _2.3254	-----
n _1.9701	1.638660
n _1.5296	1.644561
n _1.06	1.651199
n _t	1.652012
n _s	1.655512
n _r	1.660273
n _C	1.662588
n _C'	1.663241
n _0.6328	1.663852
n _D	1.666595
n _d	1.666717
n _e	1.669999
n _F	1.676385
n _F'	1.677188
n _g	1.684124
n _h	1.690674
n _i	1.702126
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7665
P_C,A'	0.3342
P_d,C	0.2992
P_e,C	0.5371
P_g,d	1.2616
P_g,F	0.5609
P_h,g	0.4747
P_i,g	1.3048
P_C',t	0.8138
P_e,C'	0.4898
P_F',e	0.5211
P_i,F'	1.8075

transmittance: 10 mm
τ_0.34	0.04
τ_0.35	0.27
τ_0.36	0.56
τ_0.37	0.75
τ_0.38	0.86
τ_0.39	0.922
τ_0.4	0.952
τ_0.42	0.975
τ_0.44	0.982
τ_0.46	0.987
τ_0.48	0.991
τ_0.5	0.994
τ_0.55	0.997
τ_0.6	0.995
τ_0.65	0.995
τ_0.7	0.996
τ_0.8	0.997
τ_0.9	0.997
τ₁	0.997
τ_1.2	0.998
τ_1.4	0.994
τ_1.6	0.995
τ_1.8	0.988
τ₂	0.976
τ_2.2	0.936
τ_2.4	0.84

Poisson coef.: 0.274
Rigidity: 365 Pa*10⁸
Young module: 929 Pa*10⁸
Knoop hardness: 560
Abrasion: 154

Climatic resistance: 3
Resistance to acids: 52.2
Phosphate resistance: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	69
100 ~ 300	82

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	3.3
-20 ~ 0	t	3.3
0 ~ 20	t	3.3
20 ~ 40	t	3.3
40 ~ 60	t	3.4
60 ~ 80	t	3.4
-40 ~ -20	C'	3.7
-20 ~ 0	C'	3.8
0 ~ 20	C'	3.8
20 ~ 40	C'	3.9
40 ~ 60	C'	4
60 ~ 80	C'	4
-40 ~ -20		3.7
-20 ~ 0		3.8
0 ~ 20		3.9
20 ~ 40		3.9
40 ~ 60		4
60 ~ 80		4.1
-40 ~ -20	D	3.9
-20 ~ 0	D	4
0 ~ 20	D	4.1
20 ~ 40	D	4.1
40 ~ 60	D	4.2
60 ~ 80	D	4.3
-40 ~ -20	e	4.1
-20 ~ 0	e	4.2
0 ~ 20	e	4.3
20 ~ 40	e	4.4
40 ~ 60	e	4.5
60 ~ 80	e	4.6
-40 ~ -20	F	4.6
-20 ~ 0	F	4.7
0 ~ 20	F	4.8
20 ~ 40	F	4.9
40 ~ 60	F	5
60 ~ 80	F	5.1
-40 ~ -20	g	5.1
-20 ~ 0	g	5.2
0 ~ 20	g	5.4
20 ~ 40	g	5.5
40 ~ 60	g	5.6
60 ~ 80	g	5.8