S-LAH58 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.882996 n_e = 1.888145	V_d = 40.76 V_e = 40.51	n_F - n_C = 0.021660 n_F' - n_C' = 0.021918	Coloring: 0.32 - 0.45 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.78764964 C2 = 0.6526356 C3 = 1.79914564 C4 = 0.00847378536 C5 = 0.0313126408 C6 = 132.788001

Refraction index
n _2.3254	-----
n _1.9701	1.842643
n _1.5296	1.850234
n _1.06	1.859361
n _t	1.860538
n _s	1.865721
n _r	1.872978
n _C	1.876559
n _C'	1.877573
n _0.6328	1.878524
n _D	1.882806
n _d	1.882996
n _e	1.888145
n _F	1.898220
n _F'	1.899491
n _g	1.910496
n _h	1.920919
n _i	1.939174
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7396
P_C,A'	0.3279
P_d,C	0.2971
P_e,C	0.5348
P_g,d	1.2695
P_g,F	0.5667
P_h,g	0.4811
P_i,g	1.3239
P_C',t	0.7864
P_e,C'	0.4880
P_F',e	0.5238
P_i,F'	1.8319

transmittance: 10 mm
τ_0.32	0.05
τ_0.33	0.17
τ_0.34	0.34
τ_0.35	0.51
τ_0.36	0.66
τ_0.37	0.77
τ_0.38	0.84
τ_0.39	0.89
τ_0.4	0.924
τ_0.42	0.951
τ_0.44	0.965
τ_0.46	0.974
τ_0.48	0.982
τ_0.5	0.988
τ_0.55	0.995
τ_0.6	0.995
τ_0.65	0.995
τ_0.7	0.995
τ_0.8	0.995
τ_0.9	0.995
τ₁	0.995
τ_1.2	0.996
τ_1.4	0.996
τ_1.6	0.996
τ_1.8	0.992
τ₂	0.98
τ_2.2	0.956
τ_2.4	0.84

Poisson coef.: 0.301
Rigidity: 487 Pa*10⁸
Young module: 1268 Pa*10⁸
Knoop hardness: 710
Abrasion: 61

Climatic resistance: 1
Resistance to acids: 2.2
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	66
100 ~ 300	78

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	3.3
-20 ~ 0	t	3.4
0 ~ 20	t	3.6
20 ~ 40	t	3.7
40 ~ 60	t	3.9
60 ~ 80	t	4
-40 ~ -20	C'	4.1
-20 ~ 0	C'	4.2
0 ~ 20	C'	4.3
20 ~ 40	C'	4.5
40 ~ 60	C'	4.6
60 ~ 80	C'	4.7
-40 ~ -20		4.1
-20 ~ 0		4.3
0 ~ 20		4.4
20 ~ 40		4.5
40 ~ 60		4.6
60 ~ 80		4.8
-40 ~ -20	D	4.4
-20 ~ 0	D	4.6
0 ~ 20	D	4.7
20 ~ 40	D	4.9
40 ~ 60	D	5
60 ~ 80	D	5.2
-40 ~ -20	e	4.7
-20 ~ 0	e	4.9
0 ~ 20	e	5
20 ~ 40	e	5.2
40 ~ 60	e	5.3
60 ~ 80	e	5.5
-40 ~ -20	F	5.4
-20 ~ 0	F	5.6
0 ~ 20	F	5.8
20 ~ 40	F	6
40 ~ 60	F	6.2
60 ~ 80	F	6.4
-40 ~ -20	g	6.2
-20 ~ 0	g	6.4
0 ~ 20	g	6.6
20 ~ 40	g	6.8
40 ~ 60	g	7.1
60 ~ 80	g	7.3