S-LAM58 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.720000 n_e = 1.724071	V_d = 41.97 V_e = 41.69	n_F - n_C = 0.017151 n_F' - n_C' = 0.017365	Coloring: 0.35 - 0.41 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.70984856 C2 = 0.173342897 C3 = 1.64833565 C4 = 0.0100852127 C5 = 0.0470890831 C6 = 157.46852

Refraction index
n _2.3254	-----
n _1.9701	1.687637
n _1.5296	1.693898
n _1.06	1.701297
n _t	1.702238
n _s	1.706358
n _r	1.712093
n _C	1.714919
n _C'	1.715718
n _0.6328	1.716469
n _D	1.719849
n _d	1.720000
n _e	1.724071
n _F	1.732070
n _F'	1.733084
n _g	1.741898
n _h	1.750333
n _i	1.765381
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7393
P_C,A'	0.3268
P_d,C	0.2962
P_e,C	0.5336
P_g,d	1.2767
P_g,F	0.5729
P_h,g	0.4918
P_i,g	1.3691
P_C',t	0.7859
P_e,C'	0.4870
P_F',e	0.5254
P_i,F'	1.8830

transmittance: 10 mm
τ_0.35	0.04
τ_0.36	0.27
τ_0.37	0.55
τ_0.38	0.74
τ_0.39	0.85
τ_0.4	0.911
τ_0.42	0.96
τ_0.44	0.976
τ_0.46	0.983
τ_0.48	0.988
τ_0.5	0.991
τ_0.55	0.996
τ_0.6	0.996
τ_0.65	0.995
τ_0.7	0.997
τ_0.8	0.998
τ_0.9	0.998
τ₁	0.998
τ_1.2	0.999
τ_1.4	0.997
τ_1.6	0.997
τ_1.8	0.992
τ₂	0.984
τ_2.2	0.956
τ_2.4	0.89

Poisson coef.: 0.279
Rigidity: 359 Pa*10⁸
Young module: 919 Pa*10⁸
Knoop hardness: 560
Abrasion: 151

Climatic resistance: 1
Resistance to acids: 3.2
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	66
100 ~ 300	77

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	3.4
20 ~ 40	t	3.6
40 ~ 60	t	3.6
60 ~ 80	t	3.7
-40 ~ -20	C'	3.9
-20 ~ 0	C'	4
0 ~ 20	C'	4.1
20 ~ 40	C'	4.3
40 ~ 60	C'	4.4
60 ~ 80	C'	4.5
-40 ~ -20		3.9
-20 ~ 0		4
0 ~ 20		4.2
20 ~ 40		4.3
40 ~ 60		4.5
60 ~ 80		4.6
-40 ~ -20	D	4.1
-20 ~ 0	D	4.3
0 ~ 20	D	4.4
20 ~ 40	D	4.6
40 ~ 60	D	4.7
60 ~ 80	D	4.8
-40 ~ -20	e	4.4
-20 ~ 0	e	4.6
0 ~ 20	e	4.7
20 ~ 40	e	4.9
40 ~ 60	e	5
60 ~ 80	e	5.2
-40 ~ -20	F	5
-20 ~ 0	F	5.2
0 ~ 20	F	5.4
20 ~ 40	F	5.6
40 ~ 60	F	5.7
60 ~ 80	F	5.9
-40 ~ -20	g	5.7
-20 ~ 0	g	5.9
0 ~ 20	g	6.1
20 ~ 40	g	6.3
40 ~ 60	g	6.5
60 ~ 80	g	6.8