S-BAL22 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.568729 n_e = 1.570879	V_d = 63.10 V_e = 62.87	n_F - n_C = 0.009012 n_F' - n_C' = 0.009079	Coloring: 0.29 - 0.34 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.16333541 C2 = 0.26332321 C3 = 1.12551059 C4 = 0.0118079103 C5 = -0.00438112893 C6 = 106.905682

Refraction index
n _2.3254	-----
n _1.9701	1.545156
n _1.5296	1.551413
n _1.06	1.557573
n _t	1.558244
n _s	1.560965
n _r	1.564376
n _C	1.565965
n _C'	1.566407
n _0.6328	1.566819
n _D	1.568648
n _d	1.568729
n _e	1.570879
n _F	1.574977
n _F'	1.575486
n _g	1.579819
n _h	1.583817
n _i	1.590596
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8566
P_C,A'	0.3554
P_d,C	0.3066
P_e,C	0.5452
P_g,d	1.2305
P_g,F	0.5371
P_h,g	0.4436
P_i,g	1.1958
P_C',t	0.9056
P_e,C'	0.4962
P_F',e	0.5111
P_i,F'	1.6765

transmittance: 10 mm
τ_0.28	0.01
τ_0.29	0.11
τ_0.3	0.33
τ_0.31	0.56
τ_0.32	0.74
τ_0.33	0.85
τ_0.34	0.918
τ_0.35	0.952
τ_0.36	0.972
τ_0.37	0.983
τ_0.38	0.988
τ_0.39	0.992
τ_0.4	0.994
τ_0.42	0.994
τ_0.44	0.994
τ_0.46	0.995
τ_0.48	0.996
τ_0.5	0.997
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.999
τ_0.9	0.999
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.987
τ_1.6	0.995
τ_1.8	0.988
τ₂	0.975
τ_2.2	0.916
τ_2.4	0.81

Poisson coef.: 0.24
Rigidity: 343 Pa*10⁸
Young module: 850 Pa*10⁸
Knoop hardness: 570
Abrasion: 127

Climatic resistance: 3
Resistance to acids: 51.2
Phosphate resistance: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	65
100 ~ 300	75

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.9
-20 ~ 0	t	1.9
0 ~ 20	t	2
20 ~ 40	t	2.1
40 ~ 60	t	2.2
60 ~ 80	t	2.2
-40 ~ -20	C'	2.1
-20 ~ 0	C'	2.2
0 ~ 20	C'	2.3
20 ~ 40	C'	2.4
40 ~ 60	C'	2.5
60 ~ 80	C'	2.6
-40 ~ -20		2.1
-20 ~ 0		2.2
0 ~ 20		2.3
20 ~ 40		2.4
40 ~ 60		2.5
60 ~ 80		2.6
-40 ~ -20	D	2.2
-20 ~ 0	D	2.3
0 ~ 20	D	2.4
20 ~ 40	D	2.5
40 ~ 60	D	2.6
60 ~ 80	D	2.8
-40 ~ -20	e	2.3
-20 ~ 0	e	2.4
0 ~ 20	e	2.5
20 ~ 40	e	2.7
40 ~ 60	e	2.8
60 ~ 80	e	2.9
-40 ~ -20	F	2.5
-20 ~ 0	F	2.7
0 ~ 20	F	2.8
20 ~ 40	F	2.9
40 ~ 60	F	3
60 ~ 80	F	3.2
-40 ~ -20	g	2.8
-20 ~ 0	g	2.9
0 ~ 20	g	3
20 ~ 40	g	3.2
40 ~ 60	g	3.3
60 ~ 80	g	3.4