S-BAH32 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.669979 n_e = 1.674021	V_d = 39.27 V_e = 38.99	n_F - n_C = 0.017060 n_F' - n_C' = 0.017286	Coloring: 0.36 - 0.40 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.5802363 C2 = 0.137504632 C3 = 1.60603298 C4 = 0.0103578062 C5 = 0.0548393088 C6 = 147.982885

Refraction index
n _2.3254	-----
n _1.9701	1.637278
n _1.5296	1.643857
n _1.06	1.651427
n _t	1.652372
n _s	1.656479
n _r	1.662155
n _C	1.664949
n _C'	1.665739
n _0.6328	1.666482
n _D	1.669829
n _d	1.669979
n _e	1.674021
n _F	1.682009
n _F'	1.683026
n _g	1.691929
n _h	1.700561
n _i	1.716299
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7372
P_C,A'	0.3248
P_d,C	0.2948
P_e,C	0.5317
P_g,d	1.2866
P_g,F	0.5814
P_h,g	0.5059
P_i,g	1.4284
P_C',t	0.7835
P_e,C'	0.4854
P_F',e	0.5278
P_i,F'	1.9503

transmittance: 10 mm
τ_0.36	0.16
τ_0.37	0.51
τ_0.38	0.74
τ_0.39	0.85
τ_0.4	0.91
τ_0.42	0.955
τ_0.44	0.971
τ_0.46	0.978
τ_0.48	0.984
τ_0.5	0.988
τ_0.55	0.994
τ_0.6	0.994
τ_0.65	0.994
τ_0.7	0.996
τ_0.8	0.998
τ_0.9	0.997
τ₁	0.997
τ_1.2	0.996
τ_1.4	0.992
τ_1.6	0.993
τ_1.8	0.988
τ₂	0.98
τ_2.2	0.948
τ_2.4	0.88

Poisson coef.: 0.26
Rigidity: 359 Pa*10⁸
Young module: 904 Pa*10⁸
Knoop hardness: 580
Abrasion: 138

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	69
100 ~ 300	78

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	3.7
-20 ~ 0	t	3.7
0 ~ 20	t	3.7
20 ~ 40	t	3.8
40 ~ 60	t	3.8
60 ~ 80	t	3.8
-40 ~ -20	C'	4.3
-20 ~ 0	C'	4.4
0 ~ 20	C'	4.4
20 ~ 40	C'	4.5
40 ~ 60	C'	4.6
60 ~ 80	C'	4.7
-40 ~ -20		4.3
-20 ~ 0		4.4
0 ~ 20		4.5
20 ~ 40		4.6
40 ~ 60		4.7
60 ~ 80		4.8
-40 ~ -20	D	4.6
-20 ~ 0	D	4.7
0 ~ 20	D	4.7
20 ~ 40	D	4.8
40 ~ 60	D	4.9
60 ~ 80	D	5
-40 ~ -20	e	4.8
-20 ~ 0	e	4.9
0 ~ 20	e	5
20 ~ 40	e	5.1
40 ~ 60	e	5.3
60 ~ 80	e	5.4
-40 ~ -20	F	5.4
-20 ~ 0	F	5.6
0 ~ 20	F	5.7
20 ~ 40	F	5.9
40 ~ 60	F	6
60 ~ 80	F	6.2
-40 ~ -20	g	6.2
-20 ~ 0	g	6.4
0 ~ 20	g	6.5
20 ~ 40	g	6.7
40 ~ 60	g	6.9
60 ~ 80	g	7.1