S-LAM55 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.762000 n_e = 1.766508	V_d = 40.10 V_e = 39.82	n_F - n_C = 0.019002 n_F' - n_C' = 0.019246	Coloring: 0.35 - 0.40 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.85412979 C2 = 0.165450323 C3 = 1.27255422 C4 = 0.0108438152 C5 = 0.051405098 C6 = 109.986837

Refraction index
n _2.3254	-----
n _1.9701	1.726396
n _1.5296	1.733283
n _1.06	1.741392
n _t	1.742424
n _s	1.746951
n _r	1.753267
n _C	1.756385
n _C'	1.757268
n _0.6328	1.758096
n _D	1.761834
n _d	1.762000
n _e	1.766508
n _F	1.775387
n _F'	1.776514
n _g	1.786343
n _h	1.795796
n _i	1.812800
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7346
P_C,A'	0.3253
P_d,C	0.2955
P_e,C	0.5327
P_g,d	1.2810
P_g,F	0.5765
P_h,g	0.4974
P_i,g	1.3923
P_C',t	0.7811
P_e,C'	0.4862
P_F',e	0.5265
P_i,F'	1.9095

transmittance: 10 mm
τ_0.35	0.06
τ_0.36	0.37
τ_0.37	0.67
τ_0.38	0.82
τ_0.39	0.89
τ_0.4	0.932
τ_0.42	0.963
τ_0.44	0.976
τ_0.46	0.984
τ_0.48	0.989
τ_0.5	0.993
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	0.998
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.995
τ_1.6	0.994
τ_1.8	0.986
τ₂	0.97
τ_2.2	0.923
τ_2.4	0.78

Poisson coef.: 0.292
Rigidity: 374 Pa*10⁸
Young module: 967 Pa*10⁸
Knoop hardness: 550
Abrasion: 145

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	84

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2.5
-20 ~ 0	t	2.6
0 ~ 20	t	2.6
20 ~ 40	t	2.7
40 ~ 60	t	2.8
60 ~ 80	t	2.8
-40 ~ -20	C'	3.1
-20 ~ 0	C'	3.2
0 ~ 20	C'	3.3
20 ~ 40	C'	3.4
40 ~ 60	C'	3.5
60 ~ 80	C'	3.6
-40 ~ -20		3.1
-20 ~ 0		3.2
0 ~ 20		3.3
20 ~ 40		3.4
40 ~ 60		3.5
60 ~ 80		3.6
-40 ~ -20	D	3.3
-20 ~ 0	D	3.5
0 ~ 20	D	3.6
20 ~ 40	D	3.7
40 ~ 60	D	3.8
60 ~ 80	D	3.9
-40 ~ -20	e	3.6
-20 ~ 0	e	3.8
0 ~ 20	e	3.9
20 ~ 40	e	4
40 ~ 60	e	4.2
60 ~ 80	e	4.3
-40 ~ -20	F	4.3
-20 ~ 0	F	4.5
0 ~ 20	F	4.7
20 ~ 40	F	4.8
40 ~ 60	F	5
60 ~ 80	F	5.2
-40 ~ -20	g	5.1
-20 ~ 0	g	5.3
0 ~ 20	g	5.5
20 ~ 40	g	5.7
40 ~ 60	g	5.9
60 ~ 80	g	6.1