S-LAH64 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.788000 n_e = 1.791960	V_d = 47.36 V_e = 47.12	n_F - n_C = 0.016635 n_F' - n_C' = 0.016805	Coloring: 0.32 - 0.38 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.83021453 C2 = 0.29156359 C3 = 1.28544024 C4 = 0.0090482329 C5 = 0.0330756689 C6 = 89.3675501

Refraction index
n _2.3254	-----
n _1.9701	1.752198
n _1.5296	1.760257
n _1.06	1.768929
n _t	1.769959
n _s	1.774333
n _r	1.780178
n _C	1.782998
n _C'	1.783790
n _0.6328	1.784532
n _D	1.787853
n _d	1.788000
n _e	1.791960
n _F	1.799633
n _F'	1.800596
n _g	1.808882
n _h	1.816663
n _i	1.830161
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7837
P_C,A'	0.3382
P_d,C	0.3007
P_e,C	0.5387
P_g,d	1.2552
P_g,F	0.5559
P_h,g	0.4677
P_i,g	1.2791
P_C',t	0.8313
P_e,C'	0.4911
P_F',e	0.5191
P_i,F'	1.7772

transmittance: 10 mm
τ_0.32	0.13
τ_0.33	0.4
τ_0.34	0.63
τ_0.35	0.77
τ_0.36	0.85
τ_0.37	0.912
τ_0.38	0.943
τ_0.39	0.961
τ_0.4	0.972
τ_0.42	0.981
τ_0.44	0.986
τ_0.46	0.99
τ_0.48	0.993
τ_0.5	0.996
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	0.998
τ₁	0.997
τ_1.2	0.996
τ_1.4	0.995
τ_1.6	0.993
τ_1.8	0.987
τ₂	0.966
τ_2.2	0.915
τ_2.4	0.68

Poisson coef.: 0.294
Rigidity: 473 Pa*10⁸
Young module: 1224 Pa*10⁸
Knoop hardness: 750
Abrasion: 61

Climatic resistance: 2
Resistance to acids: 4
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	61
100 ~ 300	74

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	3.5
-20 ~ 0	t	3.5
0 ~ 20	t	3.6
20 ~ 40	t	3.7
40 ~ 60	t	3.8
60 ~ 80	t	3.9
-40 ~ -20	C'	3.9
-20 ~ 0	C'	4
0 ~ 20	C'	4.1
20 ~ 40	C'	4.2
40 ~ 60	C'	4.3
60 ~ 80	C'	4.4
-40 ~ -20		3.9
-20 ~ 0		4
0 ~ 20		4.1
20 ~ 40		4.2
40 ~ 60		4.3
60 ~ 80		4.4
-40 ~ -20	D	4.1
-20 ~ 0	D	4.2
0 ~ 20	D	4.3
20 ~ 40	D	4.4
40 ~ 60	D	4.5
60 ~ 80	D	4.6
-40 ~ -20	e	4.3
-20 ~ 0	e	4.4
0 ~ 20	e	4.6
20 ~ 40	e	4.7
40 ~ 60	e	4.8
60 ~ 80	e	4.9
-40 ~ -20	F	4.8
-20 ~ 0	F	5
0 ~ 20	F	5.1
20 ~ 40	F	5.3
40 ~ 60	F	5.4
60 ~ 80	F	5.5
-40 ~ -20	g	5.3
-20 ~ 0	g	5.5
0 ~ 20	g	5.7
20 ~ 40	g	5.8
40 ~ 60	g	6
60 ~ 80	g	6.2