S-LAH79 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 2.003300 n_e = 2.011687	V_d = 28.27 V_e = 28.07	n_F - n_C = 0.035485 n_F' - n_C' = 0.036040	Coloring: 0.37 - 0.46 mkm.

Type: Sellmeier
Spectral range: 0.4046561 - 2.325 mkm.
C1 = 2.32557148 C2 = 0.507967133 C3 = 2.43087198 C4 = 0.0132895208 C5 = 0.0528335449 C6 = 161.122408

Refraction index
n _2.3254	-----
n _1.9701	1.946416
n _1.5296	1.955182
n _1.06	1.967070
n _t	1.968729
n _s	1.976298
n _r	1.987390
n _C	1.993010
n _C'	1.994615
n _0.6328	1.996126
n _D	2.002991
n _d	2.003300
n _e	2.011687
n _F	2.028496
n _F'	2.030655
n _g	2.049716
n _h	2.068441
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6842
P_C,A'	0.3116
P_d,C	0.2899
P_e,C	0.5263
P_g,d	1.3080
P_g,F	0.5979
P_h,g	0.5276
P_i,g	-----
P_C',t	0.7294
P_e,C'	0.4811
P_F',e	0.5345
P_i,F'	-----

transmittance: 10 mm
τ_0.37	0.03
τ_0.38	0.16
τ_0.39	0.33
τ_0.4	0.5
τ_0.42	0.72
τ_0.44	0.83
τ_0.46	0.88
τ_0.48	0.921
τ_0.5	0.945
τ_0.55	0.979
τ_0.6	0.988
τ_0.65	0.991
τ_0.7	0.993
τ_0.8	0.996
τ_0.9	0.997
τ₁	0.997
τ_1.2	0.998
τ_1.4	0.998
τ_1.6	0.997
τ_1.8	0.994
τ₂	0.986
τ_2.2	0.966
τ_2.4	0.89

Poisson coef.: 0.297
Rigidity: 484 Pa*10⁸
Young module: 1255 Pa*10⁸
Knoop hardness: 700
Abrasion: 61

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	60
100 ~ 300	71

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	6.5
-20 ~ 0	t	6.7
0 ~ 20	t	6.9
20 ~ 40	t	7
40 ~ 60	t	7.2
60 ~ 80	t	7.4
-40 ~ -20	C'	8
-20 ~ 0	C'	8.2
0 ~ 20	C'	8.5
20 ~ 40	C'	8.7
40 ~ 60	C'	9
60 ~ 80	C'	9.2
-40 ~ -20		8.1
-20 ~ 0		8.3
0 ~ 20		8.6
20 ~ 40		8.9
40 ~ 60		9.1
60 ~ 80		9.4
-40 ~ -20	D	8.6
-20 ~ 0	D	8.9
0 ~ 20	D	9.2
20 ~ 40	D	9.4
40 ~ 60	D	9.7
60 ~ 80	D	10
-40 ~ -20	e	9.2
-20 ~ 0	e	9.5
0 ~ 20	e	9.8
20 ~ 40	e	10.1
40 ~ 60	e	10.4
60 ~ 80	e	10.7
-40 ~ -20	F	10.7
-20 ~ 0	F	11.1
0 ~ 20	F	11.5
20 ~ 40	F	11.9
40 ~ 60	F	12.2
60 ~ 80	F	12.6
-40 ~ -20	g	12.4
-20 ~ 0	g	12.9
0 ~ 20	g	13.4
20 ~ 40	g	13.8
40 ~ 60	g	14.3
60 ~ 80	g	14.8