S-LAH51 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.785895 n_e = 1.790122	V_d = 44.20 V_e = 43.94	n_F - n_C = 0.017779 n_F' - n_C' = 0.017978	Coloring: 0.34 - 0.39 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.82586991 C2 = 0.283023349 C3 = 1.35964319 C4 = 0.00935297152 C5 = 0.0373803057 C6 = 100.655798

Refraction index
n _2.3254	-----
n _1.9701	1.749721
n _1.5296	1.757401
n _1.06	1.765958
n _t	1.767003
n _s	1.771497
n _r	1.777608
n _C	1.780584
n _C'	1.781423
n _0.6328	1.782209
n _D	1.785738
n _d	1.785895
n _e	1.790122
n _F	1.798363
n _F'	1.799401
n _g	1.808375
n _h	1.816867
n _i	1.831750
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7638
P_C,A'	0.3331
P_d,C	0.2987
P_e,C	0.5364
P_g,d	1.2643
P_g,F	0.5631
P_h,g	0.4776
P_i,g	1.3147
P_C',t	0.8110
P_e,C'	0.4893
P_F',e	0.5218
P_i,F'	1.8194

transmittance: 10 mm
τ_0.33	0.01
τ_0.34	0.17
τ_0.35	0.51
τ_0.36	0.73
τ_0.37	0.84
τ_0.38	0.91
τ_0.39	0.942
τ_0.4	0.961
τ_0.42	0.977
τ_0.44	0.984
τ_0.46	0.989
τ_0.48	0.993
τ_0.5	0.995
τ_0.55	0.998
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.998
τ_0.9	0.997
τ₁	0.996
τ_1.2	0.996
τ_1.4	0.991
τ_1.6	0.989
τ_1.8	0.981
τ₂	0.957
τ_2.2	0.89
τ_2.4	0.68

Poisson coef.: 0.297
Rigidity: 435 Pa*10⁸
Young module: 1129 Pa*10⁸
Knoop hardness: 660
Abrasion: 79

Climatic resistance: 1
Resistance to acids: 4
Phosphate resistance: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	59
100 ~ 300	72

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	6
-20 ~ 0	C'	6
0 ~ 20	C'	6.1
20 ~ 40	C'	6.2
40 ~ 60	C'	6.4
60 ~ 80	C'	6.6
-40 ~ -20	D	6.3
-20 ~ 0	D	6.3
0 ~ 20	D	6.4
20 ~ 40	D	6.5
40 ~ 60	D	6.7
60 ~ 80	D	6.9
-40 ~ -20	e	6.6
-20 ~ 0	e	6.6
0 ~ 20	e	6.7
20 ~ 40	e	6.8
40 ~ 60	e	7
60 ~ 80	e	7.2
-40 ~ -20	F	7.3
-20 ~ 0	F	7.3
0 ~ 20	F	7.4
20 ~ 40	F	7.6
40 ~ 60	F	7.8
60 ~ 80	F	8.1
-40 ~ -20	g	7.8
-20 ~ 0	g	7.9
0 ~ 20	g	8.1
20 ~ 40	g	8.3
40 ~ 60	g	8.6
60 ~ 80	g	8.9