S-LAM 2 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.743996 n_e = 1.747945	V_d = 44.78 V_e = 44.50	n_F - n_C = 0.016612 n_F' - n_C' = 0.016804	Coloring: 0.34 - 0.39 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.7713 C2 = 0.19581423 C3 = 1.19487834 C4 = 0.00976652444 C5 = 0.0412718628 C6 = 110.458122

Refraction index
n _2.3254	-----
n _1.9701	1.711774
n _1.5296	1.718196
n _1.06	1.725639
n _t	1.726575
n _s	1.730652
n _r	1.736285
n _C	1.739048
n _C'	1.739828
n _0.6328	1.740560
n _D	1.743850
n _d	1.743996
n _e	1.747945
n _F	1.755660
n _F'	1.756633
n _g	1.765055
n _h	1.773041
n _i	1.787081
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7507
P_C,A'	0.3303
P_d,C	0.2979
P_e,C	0.5355
P_g,d	1.2676
P_g,F	0.5655
P_h,g	0.4807
P_i,g	1.3259
P_C',t	0.7977
P_e,C'	0.4886
P_F',e	0.5229
P_i,F'	1.8329

transmittance: 10 mm
τ_0.34	0.04
τ_0.35	0.29
τ_0.36	0.59
τ_0.37	0.78
τ_0.38	0.87
τ_0.39	0.925
τ_0.4	0.95
τ_0.42	0.973
τ_0.44	0.983
τ_0.46	0.987
τ_0.48	0.992
τ_0.5	0.995
τ_0.55	0.997
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.999
τ_0.9	0.997
τ₁	0.997
τ_1.2	0.999
τ_1.4	0.997
τ_1.6	0.996
τ_1.8	0.988
τ₂	0.971
τ_2.2	0.928
τ_2.4	0.79

Poisson coef.: 0.295
Rigidity: 361 Pa*10⁸
Young module: 935 Pa*10⁸
Knoop hardness: 560
Abrasion: 158

Climatic resistance: 2
Resistance to acids: 52.2
Phosphate resistance: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	74
100 ~ 300	87

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.9
-20 ~ 0	t	2
0 ~ 20	t	2
20 ~ 40	t	2.1
40 ~ 60	t	2.2
60 ~ 80	t	2.2
-40 ~ -20	C'	2.5
-20 ~ 0	C'	2.6
0 ~ 20	C'	2.6
20 ~ 40	C'	2.7
40 ~ 60	C'	2.8
60 ~ 80	C'	2.9
-40 ~ -20		2.5
-20 ~ 0		2.6
0 ~ 20		2.7
20 ~ 40		2.8
40 ~ 60		2.8
60 ~ 80		2.9
-40 ~ -20	D	2.7
-20 ~ 0	D	2.8
0 ~ 20	D	2.9
20 ~ 40	D	3
40 ~ 60	D	3.1
60 ~ 80	D	3.2
-40 ~ -20	e	3
-20 ~ 0	e	3.1
0 ~ 20	e	3.2
20 ~ 40	e	3.3
40 ~ 60	e	3.4
60 ~ 80	e	3.5
-40 ~ -20	F	3.5
-20 ~ 0	F	3.7
0 ~ 20	F	3.8
20 ~ 40	F	3.9
40 ~ 60	F	4.1
60 ~ 80	F	4.2
-40 ~ -20	g	4.1
-20 ~ 0	g	4.3
0 ~ 20	g	4.5
20 ~ 40	g	4.6
40 ~ 60	g	4.8
60 ~ 80	g	4.9