S-LAM66 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.800998 n_e = 1.806422	V_d = 34.96 V_e = 34.72	n_F - n_C = 0.022907 n_F' - n_C' = 0.023225	Coloring: 0.35 - 0.43 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.92094221 C2 = 0.219901208 C3 = 1.72705231 C4 = 0.0115075241 C5 = 0.0547993543 C6 = 120.133674

Refraction index
n _2.3254	-----
n _1.9701	1.758420
n _1.5296	1.766722
n _1.06	1.776426
n _t	1.777655
n _s	1.783038
n _r	1.790554
n _C	1.794274
n _C'	1.795329
n _0.6328	1.796320
n _D	1.800798
n _d	1.800998
n _e	1.806422
n _F	1.817181
n _F'	1.818555
n _g	1.830614
n _h	1.842361
n _i	1.863908
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7255
P_C,A'	0.3216
P_d,C	0.2935
P_e,C	0.5302
P_g,d	1.2928
P_g,F	0.5863
P_h,g	0.5128
P_i,g	1.4534
P_C',t	0.7715
P_e,C'	0.4842
P_F',e	0.5296
P_i,F'	1.9798

transmittance: 10 mm
τ_0.35	0.03
τ_0.36	0.28
τ_0.37	0.57
τ_0.38	0.73
τ_0.39	0.82
τ_0.4	0.87
τ_0.42	0.932
τ_0.44	0.954
τ_0.46	0.968
τ_0.48	0.977
τ_0.5	0.985
τ_0.55	0.994
τ_0.6	0.994
τ_0.65	0.994
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	0.998
τ_1.6	0.997
τ_1.8	0.992
τ₂	0.976
τ_2.2	0.937
τ_2.4	0.77

Poisson coef.: 0.28
Rigidity: 473 Pa*10⁸
Young module: 1210 Pa*10⁸
Knoop hardness: 660
Abrasion: 92

Climatic resistance: 1
Resistance to acids: 4
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	79
100 ~ 300	95

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2.2
-20 ~ 0	t	2.2
0 ~ 20	t	2.2
20 ~ 40	t	2.3
40 ~ 60	t	2.3
60 ~ 80	t	2.4
-40 ~ -20	C'	3
-20 ~ 0	C'	3.1
0 ~ 20	C'	3.2
20 ~ 40	C'	3.2
40 ~ 60	C'	3.3
60 ~ 80	C'	3.4
-40 ~ -20		3.1
-20 ~ 0		3.1
0 ~ 20		3.2
20 ~ 40		3.3
40 ~ 60		3.4
60 ~ 80		3.5
-40 ~ -20	D	3.3
-20 ~ 0	D	3.4
0 ~ 20	D	3.5
20 ~ 40	D	3.6
40 ~ 60	D	3.7
60 ~ 80	D	3.8
-40 ~ -20	e	3.7
-20 ~ 0	e	3.8
0 ~ 20	e	3.9
20 ~ 40	e	4
40 ~ 60	e	4.1
60 ~ 80	e	4.3
-40 ~ -20	F	4.5
-20 ~ 0	F	4.7
0 ~ 20	F	4.9
20 ~ 40	F	5
40 ~ 60	F	5.2
60 ~ 80	F	5.4
-40 ~ -20	g	5.5
-20 ~ 0	g	5.7
0 ~ 20	g	5.9
20 ~ 40	g	6.1
40 ~ 60	g	6.4
60 ~ 80	g	6.6