S-BAL41 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.563838 n_e = 1.566055	V_d = 60.66 V_e = 60.42	n_F - n_C = 0.009294 n_F' - n_C' = 0.009368	Coloring: 0.30 - 0.35 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.243442 C2 = 0.166301104 C3 = 1.10586114 C4 = 0.0116396708 C5 = -0.00890464938 C6 = 114.11122

Refraction index
n _2.3254	-----
n _1.9701	1.540832
n _1.5296	1.546667
n _1.06	1.552563
n _t	1.553222
n _s	1.555925
n _r	1.559377
n _C	1.561000
n _C'	1.561453
n _0.6328	1.561876
n _D	1.563755
n _d	1.563838
n _e	1.566055
n _F	1.570294
n _F'	1.570821
n _g	1.575316
n _h	1.579471
n _i	1.586524
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8369
P_C,A'	0.3512
P_d,C	0.3053
P_e,C	0.5439
P_g,d	1.2348
P_g,F	0.5402
P_h,g	0.4470
P_i,g	1.2059
P_C',t	0.8856
P_e,C'	0.4952
P_F',e	0.5127
P_i,F'	1.6895

transmittance: 10 mm
τ_0.3	0.05
τ_0.31	0.25
τ_0.32	0.51
τ_0.33	0.72
τ_0.34	0.85
τ_0.35	0.925
τ_0.36	0.96
τ_0.37	0.978
τ_0.38	0.985
τ_0.39	0.99
τ_0.4	0.993
τ_0.42	0.994
τ_0.44	0.994
τ_0.46	0.995
τ_0.48	0.997
τ_0.5	0.998
τ_0.55	0.999
τ_0.6	0.998
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.998
τ_0.9	0.998
τ₁	0.997
τ_1.2	0.997
τ_1.4	0.987
τ_1.6	0.993
τ_1.8	0.984
τ₂	0.971
τ_2.2	0.908
τ_2.4	0.83

Poisson coef.: 0.242
Rigidity: 358 Pa*10⁸
Young module: 890 Pa*10⁸
Knoop hardness: 600
Abrasion: 122

Climatic resistance: 2
Resistance to acids: 51.2
Phosphate resistance: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	75
100 ~ 300	91

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2.1
-20 ~ 0	t	2.1
0 ~ 20	t	2.1
20 ~ 40	t	2.1
40 ~ 60	t	2.2
60 ~ 80	t	2.2
-40 ~ -20	C'	2.3
-20 ~ 0	C'	2.3
0 ~ 20	C'	2.4
20 ~ 40	C'	2.5
40 ~ 60	C'	2.5
60 ~ 80	C'	2.6
-40 ~ -20		2.3
-20 ~ 0		2.3
0 ~ 20		2.4
20 ~ 40		2.5
40 ~ 60		2.5
60 ~ 80		2.6
-40 ~ -20	D	2.4
-20 ~ 0	D	2.4
0 ~ 20	D	2.5
20 ~ 40	D	2.6
40 ~ 60	D	2.7
60 ~ 80	D	2.7
-40 ~ -20	e	2.5
-20 ~ 0	e	2.6
0 ~ 20	e	2.7
20 ~ 40	e	2.7
40 ~ 60	e	2.8
60 ~ 80	e	2.9
-40 ~ -20	F	2.8
-20 ~ 0	F	2.9
0 ~ 20	F	3
20 ~ 40	F	3.1
40 ~ 60	F	3.2
60 ~ 80	F	3.2
-40 ~ -20	g	3
-20 ~ 0	g	3.2
0 ~ 20	g	3.3
20 ~ 40	g	3.4
40 ~ 60	g	3.5
60 ~ 80	g	3.6