S-BAL11 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.572500 n_e = 1.574864	V_d = 57.74 V_e = 57.47	n_F - n_C = 0.009914 n_F' - n_C' = 0.010001	Coloring: 0.32 - 0.35 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 0.821314256 C2 = 0.612586478 C3 = 1.24859637 C4 = 0.00351436131 C5 = 0.0179762375 C6 = 133.45667

Refraction index
n _2.3254	-----
n _1.9701	1.549224
n _1.5296	1.554863
n _1.06	1.560716
n _t	1.561385
n _s	1.564166
n _r	1.567775
n _C	1.569489
n _C'	1.569968
n _0.6328	1.570416
n _D	1.572412
n _d	1.572500
n _e	1.574864
n _F	1.579403
n _F'	1.579970
n _g	1.584813
n _h	1.589315
n _i	1.597011
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8173
P_C,A'	0.3465
P_d,C	0.3037
P_e,C	0.5421
P_g,d	1.2419
P_g,F	0.5456
P_h,g	0.4540
P_i,g	1.2302
P_C',t	0.8656
P_e,C'	0.4937
P_F',e	0.5149
P_i,F'	1.7187

transmittance: 10 mm
τ_0.32	0.01
τ_0.33	0.24
τ_0.34	0.61
τ_0.35	0.84
τ_0.36	0.932
τ_0.37	0.967
τ_0.38	0.982
τ_0.39	0.989
τ_0.4	0.993
τ_0.42	0.995
τ_0.44	0.996
τ_0.46	0.997
τ_0.48	0.998
τ_0.5	0.998
τ_0.55	0.999
τ_0.6	0.999
τ_0.65	0.998
τ_0.7	0.999
τ_0.8	0.999
τ_0.9	0.999
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.989
τ_1.6	0.995
τ_1.8	0.988
τ₂	0.979
τ_2.2	0.929
τ_2.4	0.89

Poisson coef.: 0.237
Rigidity: 331 Pa*10⁸
Young module: 819 Pa*10⁸
Knoop hardness: 590
Abrasion: 109

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	66
100 ~ 300	80

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	3
-20 ~ 0	t	3.1
0 ~ 20	t	3.2
20 ~ 40	t	3.2
40 ~ 60	t	3.3
60 ~ 80	t	3.3
-40 ~ -20	C'	3.4
-20 ~ 0	C'	3.5
0 ~ 20	C'	3.6
20 ~ 40	C'	3.6
40 ~ 60	C'	3.7
60 ~ 80	C'	3.8
-40 ~ -20		3.5
-20 ~ 0		3.5
0 ~ 20		3.6
20 ~ 40		3.7
40 ~ 60		3.7
60 ~ 80		3.8
-40 ~ -20	D	3.6
-20 ~ 0	D	3.7
0 ~ 20	D	3.7
20 ~ 40	D	3.8
40 ~ 60	D	3.9
60 ~ 80	D	3.9
-40 ~ -20	e	3.7
-20 ~ 0	e	3.8
0 ~ 20	e	3.9
20 ~ 40	e	4
40 ~ 60	e	4
60 ~ 80	e	4.1
-40 ~ -20	F	4
-20 ~ 0	F	4.1
0 ~ 20	F	4.2
20 ~ 40	F	4.3
40 ~ 60	F	4.4
60 ~ 80	F	4.5
-40 ~ -20	g	4.3
-20 ~ 0	g	4.4
0 ~ 20	g	4.6
20 ~ 40	g	4.7
40 ~ 60	g	4.8
60 ~ 80	g	4.9