S-BAH27 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.701535 n_e = 1.705570	V_d = 41.23 V_e = 40.95	n_F - n_C = 0.017011 n_F' - n_C' = 0.017227	Coloring: 0.35 - 0.41 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.68939052 C2 = 0.133081013 C3 = 1.41165515 C4 = 0.0103598193 C5 = 0.0533982239 C6 = 126.515503

Refraction index
n _2.3254	-----
n _1.9701	1.668583
n _1.5296	1.675259
n _1.06	1.682909
n _t	1.683862
n _s	1.687998
n _r	1.693701
n _C	1.696502
n _C'	1.697295
n _0.6328	1.698038
n _D	1.701386
n _d	1.701535
n _e	1.705570
n _F	1.713514
n _F'	1.714522
n _g	1.723323
n _h	1.731803
n _i	1.747119
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7430
P_C,A'	0.3268
P_d,C	0.2958
P_e,C	0.5330
P_g,d	1.2807
P_g,F	0.5766
P_h,g	0.4985
P_i,g	1.3988
P_C',t	0.7896
P_e,C'	0.4864
P_F',e	0.5262
P_i,F'	1.9162

transmittance: 10 mm
τ_0.36	0.16
τ_0.37	0.47
τ_0.38	0.7
τ_0.39	0.83
τ_0.4	0.89
τ_0.42	0.955
τ_0.44	0.971
τ_0.46	0.979
τ_0.48	0.985
τ_0.5	0.989
τ_0.55	0.995
τ_0.6	0.994
τ_0.65	0.994
τ_0.7	0.996
τ_0.8	0.998
τ_0.9	0.998
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.993
τ_1.6	0.994
τ_1.8	0.987
τ₂	0.974
τ_2.2	0.921
τ_2.4	0.81

Poisson coef.: 0.272
Rigidity: 368 Pa*10⁸
Young module: 936 Pa*10⁸
Knoop hardness: 580
Abrasion: 129

Climatic resistance: 2
Resistance to acids: 4
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	64
100 ~ 300	75

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	3.2
-20 ~ 0	t	3.3
0 ~ 20	t	3.4
20 ~ 40	t	3.5
40 ~ 60	t	3.5
60 ~ 80	t	3.7
-40 ~ -20	C'	3.7
-20 ~ 0	C'	3.8
0 ~ 20	C'	4
20 ~ 40	C'	4.1
40 ~ 60	C'	4.2
60 ~ 80	C'	4.4
-40 ~ -20		3.7
-20 ~ 0		3.9
0 ~ 20		4
20 ~ 40		4.1
40 ~ 60		4.3
60 ~ 80		4.4
-40 ~ -20	D	4
-20 ~ 0	D	4.1
0 ~ 20	D	4.2
20 ~ 40	D	4.4
40 ~ 60	D	4.5
60 ~ 80	D	4.6
-40 ~ -20	e	4.2
-20 ~ 0	e	4.4
0 ~ 20	e	4.5
20 ~ 40	e	4.7
40 ~ 60	e	4.8
60 ~ 80	e	5
-40 ~ -20	F	4.8
-20 ~ 0	F	5
0 ~ 20	F	5.2
20 ~ 40	F	5.4
40 ~ 60	F	5.6
60 ~ 80	F	5.8
-40 ~ -20	g	5.5
-20 ~ 0	g	5.7
0 ~ 20	g	5.9
20 ~ 40	g	6.2
40 ~ 60	g	6.4
60 ~ 80	g	6.6