S-LAH59 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.815999 n_e = 1.820166	V_d = 46.62 V_e = 46.37	n_F - n_C = 0.017503 n_F' - n_C' = 0.017687	Coloring: 0.30 - 0.39 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.51372967 C2 = 0.702462343 C3 = 1.33600982 C4 = 0.00705246901 C5 = 0.0249488689 C6 = 100.085908

Refraction index
n _2.3254	-----
n _1.9701	1.780334
n _1.5296	1.787836
n _1.06	1.796256
n _t	1.797289
n _s	1.801741
n _r	1.807801
n _C	1.810748
n _C'	1.811579
n _0.6328	1.812356
n _D	1.815844
n _d	1.815999
n _e	1.820166
n _F	1.828251
n _F'	1.829266
n _g	1.837997
n _h	1.846185
n _i	1.860338
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7689
P_C,A'	0.3353
P_d,C	0.3000
P_e,C	0.5380
P_g,d	1.2567
P_g,F	0.5567
P_h,g	0.4677
P_i,g	1.2764
P_C',t	0.8164
P_e,C'	0.4906
P_F',e	0.5199
P_i,F'	1.7752

transmittance: 10 mm
τ_0.29	0.02
τ_0.3	0.06
τ_0.31	0.09
τ_0.32	0.28
τ_0.33	0.43
τ_0.34	0.58
τ_0.35	0.71
τ_0.36	0.81
τ_0.37	0.88
τ_0.38	0.921
τ_0.39	0.943
τ_0.4	0.958
τ_0.42	0.973
τ_0.44	0.979
τ_0.46	0.984
τ_0.48	0.989
τ_0.5	0.994
τ_0.55	0.997
τ_0.6	0.996
τ_0.65	0.996
τ_0.7	0.996
τ_0.8	0.996
τ_0.9	0.995
τ₁	0.995
τ_1.2	0.995
τ_1.4	0.995
τ_1.6	0.994
τ_1.8	0.989
τ₂	0.973
τ_2.2	0.938
τ_2.4	0.76

Poisson coef.: 0.298
Rigidity: 482 Pa*10⁸
Young module: 1250 Pa*10⁸
Knoop hardness: 750
Abrasion: 57

Climatic resistance: 1
Resistance to acids: 3
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	63
100 ~ 300	76

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	4.1
-20 ~ 0	t	4.1
0 ~ 20	t	4.2
20 ~ 40	t	4.3
40 ~ 60	t	4.3
60 ~ 80	t	4.4
-40 ~ -20	C'	4.6
-20 ~ 0	C'	4.7
0 ~ 20	C'	4.8
20 ~ 40	C'	4.9
40 ~ 60	C'	5
60 ~ 80	C'	5.1
-40 ~ -20		4.6
-20 ~ 0		4.7
0 ~ 20		4.8
20 ~ 40		4.9
40 ~ 60		5
60 ~ 80		5.1
-40 ~ -20	D	4.9
-20 ~ 0	D	5
0 ~ 20	D	5.1
20 ~ 40	D	5.2
40 ~ 60	D	5.3
60 ~ 80	D	5.4
-40 ~ -20	e	5.1
-20 ~ 0	e	5.2
0 ~ 20	e	5.3
20 ~ 40	e	5.4
40 ~ 60	e	5.6
60 ~ 80	e	5.7
-40 ~ -20	F	5.6
-20 ~ 0	F	5.8
0 ~ 20	F	5.9
20 ~ 40	F	6.1
40 ~ 60	F	6.2
60 ~ 80	F	6.4
-40 ~ -20	g	6.2
-20 ~ 0	g	6.4
0 ~ 20	g	6.5
20 ~ 40	g	6.7
40 ~ 60	g	6.9
60 ~ 80	g	7