S-LAM51 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.699997 n_e = 1.703461	V_d = 48.08 V_e = 47.80	n_F - n_C = 0.014558 n_F' - n_C' = 0.014715	Coloring: 0.34 - 0.39 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.638472 C2 = 0.188330533 C3 = 1.47502357 C4 = 0.00904853452 C5 = 0.0372740173 C6 = 137.77005

Refraction index
n _2.3254	-----
n _1.9701	1.670238
n _1.5296	1.676523
n _1.06	1.683578
n _t	1.684441
n _s	1.688151
n _r	1.693188
n _C	1.695636
n _C'	1.696325
n _0.6328	1.696971
n _D	1.699869
n _d	1.699997
n _e	1.703461
n _F	1.710194
n _F'	1.711041
n _g	1.718341
n _h	1.725221
n _i	1.737213
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7688
P_C,A'	0.3349
P_d,C	0.2995
P_e,C	0.5374
P_g,d	1.2599
P_g,F	0.5595
P_h,g	0.4725
P_i,g	1.2962
P_C',t	0.8162
P_e,C'	0.4901
P_F',e	0.5206
P_i,F'	1.7976

transmittance: 10 mm
τ_0.34	0.14
τ_0.35	0.45
τ_0.36	0.7
τ_0.37	0.84
τ_0.38	0.914
τ_0.39	0.948
τ_0.4	0.966
τ_0.42	0.98
τ_0.44	0.985
τ_0.46	0.989
τ_0.48	0.992
τ_0.5	0.995
τ_0.55	0.997
τ_0.6	0.996
τ_0.65	0.996
τ_0.7	0.997
τ_0.8	0.997
τ_0.9	0.997
τ₁	0.996
τ_1.2	0.996
τ_1.4	0.995
τ_1.6	0.995
τ_1.8	0.989
τ₂	0.98
τ_2.2	0.951
τ_2.4	0.85

Poisson coef.: 0.278
Rigidity: 394 Pa*10⁸
Young module: 1007 Pa*10⁸
Knoop hardness: 570
Abrasion: 140

Climatic resistance: 2
Resistance to acids: 51.2
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	71
100 ~ 300	80

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2.4
-20 ~ 0	t	2.4
0 ~ 20	t	2.5
20 ~ 40	t	2.5
40 ~ 60	t	2.6
60 ~ 80	t	2.6
-40 ~ -20	C'	2.8
-20 ~ 0	C'	2.8
0 ~ 20	C'	2.9
20 ~ 40	C'	3
40 ~ 60	C'	3
60 ~ 80	C'	3.1
-40 ~ -20		2.8
-20 ~ 0		2.9
0 ~ 20		2.9
20 ~ 40		3
40 ~ 60		3
60 ~ 80		3.1
-40 ~ -20	D	2.9
-20 ~ 0	D	3
0 ~ 20	D	3.1
20 ~ 40	D	3.2
40 ~ 60	D	3.3
60 ~ 80	D	3.4
-40 ~ -20	e	3.2
-20 ~ 0	e	3.3
0 ~ 20	e	3.3
20 ~ 40	e	3.4
40 ~ 60	e	3.5
60 ~ 80	e	3.6
-40 ~ -20	F	3.6
-20 ~ 0	F	3.7
0 ~ 20	F	3.8
20 ~ 40	F	3.9
40 ~ 60	F	4
60 ~ 80	F	4.1
-40 ~ -20	g	4.1
-20 ~ 0	g	4.3
0 ~ 20	g	4.4
20 ~ 40	g	4.5
40 ~ 60	g	4.6
60 ~ 80	g	4.7