S-BAL 3 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.571350 n_e = 1.573919	V_d = 52.95 V_e = 52.65	n_F - n_C = 0.010789 n_F' - n_C' = 0.010899	Coloring: 0.33 - 0.36 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.2936689 C2 = 0.132440252 C3 = 1.10197293 C4 = 0.00800367962 C5 = 0.0354711196 C6 = 134.517431

Refraction index
n _2.3254	-----
n _1.9701	1.548309
n _1.5296	1.553409
n _1.06	1.558982
n _t	1.559648
n _s	1.562481
n _r	1.566274
n _C	1.568104
n _C'	1.568618
n _0.6328	1.569100
n _D	1.571255
n _d	1.571350
n _e	1.573919
n _F	1.578894
n _F'	1.579518
n _g	1.584887
n _h	1.589927
n _i	1.598670
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7836
P_C,A'	0.3384
P_d,C	0.3008
P_e,C	0.5389
P_g,d	1.2545
P_g,F	0.5554
P_h,g	0.4671
P_i,g	1.2774
P_C',t	0.8313
P_e,C'	0.4912
P_F',e	0.5189
P_i,F'	1.7750

transmittance: 10 mm
τ_0.33	0.01
τ_0.34	0.26
τ_0.35	0.63
τ_0.36	0.84
τ_0.37	0.928
τ_0.38	0.963
τ_0.39	0.979
τ_0.4	0.988
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	0.998
τ_0.9	0.998
τ₁	0.997
τ_1.2	0.996
τ_1.4	0.991
τ_1.6	0.99
τ_1.8	0.972
τ₂	0.945
τ_2.2	0.88
τ_2.4	0.83

Poisson coef.: 0.249
Rigidity: 288 Pa*10⁸
Young module: 719 Pa*10⁸
Knoop hardness: 510
Abrasion: 172

Climatic resistance: 2
Resistance to acids: 1.2
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	95
100 ~ 300	111

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	-1
-20 ~ 0	t	-1
0 ~ 20	t	-1
20 ~ 40	t	-1
40 ~ 60	t	-1
60 ~ 80	t	-1
-40 ~ -20	C'	-0.8
-20 ~ 0	C'	-0.7
0 ~ 20	C'	-0.7
20 ~ 40	C'	-0.7
40 ~ 60	C'	-0.7
60 ~ 80	C'	-0.6
-40 ~ -20		-0.7
-20 ~ 0		-0.7
0 ~ 20		-0.7
20 ~ 40		-0.6
40 ~ 60		-0.6
60 ~ 80		-0.6
-40 ~ -20	D	-0.6
-20 ~ 0	D	-0.6
0 ~ 20	D	-0.6
20 ~ 40	D	-0.5
40 ~ 60	D	-0.5
60 ~ 80	D	-0.4
-40 ~ -20	e	-0.5
-20 ~ 0	e	-0.4
0 ~ 20	e	-0.4
20 ~ 40	e	-0.3
40 ~ 60	e	-0.3
60 ~ 80	e	-0.2
-40 ~ -20	F	-0.1
-20 ~ 0	F	-0.1
20 ~ 40	F	0.1
40 ~ 60	F	0.1
60 ~ 80	F	0.2
-40 ~ -20	g	0.2
-20 ~ 0	g	0.3
0 ~ 20	g	0.4
20 ~ 40	g	0.5
40 ~ 60	g	0.5
60 ~ 80	g	0.6