S-LAH55 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.834806 n_e = 1.839452	V_d = 42.72 V_e = 42.48	n_F - n_C = 0.019539 n_F' - n_C' = 0.019760	Coloring: 0.32 - 0.40 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.93471499 C2 = 0.340566282 C3 = 1.52023483 C4 = 0.00971032612 C5 = 0.0365402535 C6 = 103.821614

Refraction index
n _2.3254	-----
n _1.9701	1.795642
n _1.5296	1.803801
n _1.06	1.812998
n _t	1.814131
n _s	1.819023
n _r	1.825710
n _C	1.828974
n _C'	1.829894
n _0.6328	1.830757
n _D	1.834634
n _d	1.834806
n _e	1.839452
n _F	1.848513
n _F'	1.849655
n _g	1.859527
n _h	1.868868
n _i	1.885235
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7596
P_C,A'	0.3322
P_d,C	0.2985
P_e,C	0.5362
P_g,d	1.2651
P_g,F	0.5636
P_h,g	0.4780
P_i,g	1.3156
P_C',t	0.8067
P_e,C'	0.4891
P_F',e	0.5222
P_i,F'	1.8209

transmittance: 10 mm
τ_0.32	0.03
τ_0.33	0.23
τ_0.34	0.48
τ_0.35	0.67
τ_0.36	0.79
τ_0.37	0.87
τ_0.38	0.916
τ_0.39	0.943
τ_0.4	0.96
τ_0.42	0.978
τ_0.44	0.985
τ_0.46	0.989
τ_0.48	0.993
τ_0.5	0.995
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.999
τ_0.9	0.999
τ₁	0.999
τ_1.2	0.999
τ_1.4	0.996
τ_1.6	0.996
τ_1.8	0.988
τ₂	0.967
τ_2.2	0.909
τ_2.4	0.71

Poisson coef.: 0.297
Rigidity: 484 Pa*10⁸
Young module: 1255 Pa*10⁸
Knoop hardness: 730
Abrasion: 63

Climatic resistance: 1
Resistance to acids: 3
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	62
100 ~ 300	72

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	3.8
-20 ~ 0	t	3.8
0 ~ 20	t	3.8
20 ~ 40	t	3.8
40 ~ 60	t	3.9
60 ~ 80	t	3.9
-40 ~ -20	C'	4.4
-20 ~ 0	C'	4.4
0 ~ 20	C'	4.5
20 ~ 40	C'	4.6
40 ~ 60	C'	4.7
60 ~ 80	C'	4.8
-40 ~ -20		4.4
-20 ~ 0		4.5
0 ~ 20		4.6
20 ~ 40		4.6
40 ~ 60		4.7
60 ~ 80		4.8
-40 ~ -20	D	4.6
-20 ~ 0	D	4.7
0 ~ 20	D	4.8
20 ~ 40	D	4.9
40 ~ 60	D	5
60 ~ 80	D	5.1
-40 ~ -20	e	4.9
-20 ~ 0	e	5
0 ~ 20	e	5.1
20 ~ 40	e	5.2
40 ~ 60	e	5.3
60 ~ 80	e	5.4
-40 ~ -20	F	5.5
-20 ~ 0	F	5.6
0 ~ 20	F	5.8
20 ~ 40	F	5.9
40 ~ 60	F	6
60 ~ 80	F	6.2
-40 ~ -20	g	6.1
-20 ~ 0	g	6.3
0 ~ 20	g	6.5
20 ~ 40	g	6.6
40 ~ 60	g	6.8
60 ~ 80	g	7