S-LAM54 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.756997 n_e = 1.760764	V_d = 47.82 V_e = 47.57	n_F - n_C = 0.015829 n_F' - n_C' = 0.015990	Coloring: 0.34 - 0.39 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.84213306 C2 = 0.175468631 C3 = 1.25750878 C4 = 0.0094399322 C5 = 0.0395281122 C6 = 86.5463013

Refraction index
n _2.3254	-----
n _1.9701	1.721875
n _1.5296	1.730069
n _1.06	1.738696
n _t	1.739703
n _s	1.743940
n _r	1.749544
n _C	1.752234
n _C'	1.752989
n _0.6328	1.753695
n _D	1.756857
n _d	1.756997
n _e	1.760764
n _F	1.768063
n _F'	1.768979
n _g	1.776873
n _h	1.784306
n _i	1.797261
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7916
P_C,A'	0.3396
P_d,C	0.3009
P_e,C	0.5388
P_g,d	1.2556
P_g,F	0.5565
P_h,g	0.4695
P_i,g	1.2880
P_C',t	0.8393
P_e,C'	0.4911
P_F',e	0.5189
P_i,F'	1.7867

transmittance: 10 mm
τ_0.34	0.05
τ_0.35	0.33
τ_0.36	0.65
τ_0.37	0.82
τ_0.38	0.909
τ_0.39	0.945
τ_0.4	0.963
τ_0.42	0.979
τ_0.44	0.985
τ_0.46	0.99
τ_0.48	0.993
τ_0.5	0.995
τ_0.55	0.997
τ_0.6	0.997
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	0.997
τ_1.4	0.991
τ_1.6	0.991
τ_1.8	0.981
τ₂	0.954
τ_2.2	0.87
τ_2.4	0.62

Poisson coef.: 0.292
Rigidity: 454 Pa*10⁸
Young module: 1172 Pa*10⁸
Knoop hardness: 700
Abrasion: 62

Climatic resistance: 1
Resistance to acids: 51
Phosphate resistance: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	57
100 ~ 300	69

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	3.8
-20 ~ 0	t	4
0 ~ 20	t	4.2
20 ~ 40	t	4.4
40 ~ 60	t	4.5
60 ~ 80	t	4.7
-40 ~ -20	C'	4.2
-20 ~ 0	C'	4.4
0 ~ 20	C'	4.7
20 ~ 40	C'	4.9
40 ~ 60	C'	5.1
60 ~ 80	C'	5.3
-40 ~ -20		4.3
-20 ~ 0		4.5
0 ~ 20		4.7
20 ~ 40		4.9
40 ~ 60		5.1
60 ~ 80		5.3
-40 ~ -20	D	4.4
-20 ~ 0	D	4.7
0 ~ 20	D	4.9
20 ~ 40	D	5.1
40 ~ 60	D	5.3
60 ~ 80	D	5.5
-40 ~ -20	e	4.7
-20 ~ 0	e	4.9
0 ~ 20	e	5.1
20 ~ 40	e	5.3
40 ~ 60	e	5.6
60 ~ 80	e	5.8
-40 ~ -20	F	5.1
-20 ~ 0	F	5.4
0 ~ 20	F	5.6
20 ~ 40	F	5.9
40 ~ 60	F	6.1
60 ~ 80	F	6.4
-40 ~ -20	g	5.6
-20 ~ 0	g	5.9
0 ~ 20	g	6.2
20 ~ 40	g	6.4
40 ~ 60	g	6.7
60 ~ 80	g	7