S-LAL14 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.696796 n_e = 1.699788	V_d = 55.53 V_e = 55.30	n_F - n_C = 0.012547 n_F' - n_C' = 0.012652	Coloring: 0.29 - 0.37 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.2372097 C2 = 0.589722623 C3 = 1.3192188 C4 = 0.015355132 C5 = -0.00030789625 C6 = 93.7202947

Refraction index
n _2.3254	-----
n _1.9701	1.665774
n _1.5296	1.673693
n _1.06	1.681637
n _t	1.682521
n _s	1.686152
n _r	1.690790
n _C	1.692973
n _C'	1.693583
n _0.6328	1.694152
n _D	1.696685
n _d	1.696796
n _e	1.699788
n _F	1.705521
n _F'	1.706235
n _g	1.712339
n _h	1.718004
n _i	1.727672
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8329
P_C,A'	0.3497
P_d,C	0.3046
P_e,C	0.5430
P_g,d	1.2387
P_g,F	0.5433
P_h,g	0.4514
P_i,g	1.2220
P_C',t	0.8815
P_e,C'	0.4945
P_F',e	0.5138
P_i,F'	1.7084

transmittance: 10 mm
τ_0.28	0.03
τ_0.29	0.07
τ_0.3	0.15
τ_0.31	0.27
τ_0.32	0.41
τ_0.33	0.56
τ_0.34	0.7
τ_0.35	0.81
τ_0.36	0.88
τ_0.37	0.931
τ_0.38	0.959
τ_0.39	0.974
τ_0.4	0.982
τ_0.42	0.99
τ_0.44	0.993
τ_0.46	0.995
τ_0.48	0.997
τ_0.5	0.998
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	0.998
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.991
τ_1.6	0.992
τ_1.8	0.982
τ₂	0.954
τ_2.2	0.86
τ_2.4	0.59

Poisson coef.: 0.284
Rigidity: 435 Pa*10⁸
Young module: 1118 Pa*10⁸
Knoop hardness: 660
Abrasion: 81

Climatic resistance: 1
Resistance to acids: 52.2
Phosphate resistance: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	57
100 ~ 300	71

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	3.5
-20 ~ 0	t	3.4
0 ~ 20	t	3.4
20 ~ 40	t	3.4
40 ~ 60	t	3.5
60 ~ 80	t	3.7
-40 ~ -20	C'	3.7
-20 ~ 0	C'	3.7
0 ~ 20	C'	3.7
20 ~ 40	C'	3.8
40 ~ 60	C'	4
60 ~ 80	C'	4.2
-40 ~ -20		3.8
-20 ~ 0		3.8
0 ~ 20		3.8
20 ~ 40		3.9
40 ~ 60		4
60 ~ 80		4.2
-40 ~ -20	D	3.9
-20 ~ 0	D	3.9
0 ~ 20	D	4
20 ~ 40	D	4.1
40 ~ 60	D	4.2
60 ~ 80	D	4.4
-40 ~ -20	e	4
-20 ~ 0	e	4
0 ~ 20	e	4.1
20 ~ 40	e	4.2
40 ~ 60	e	4.3
60 ~ 80	e	4.5
-40 ~ -20	F	4.2
-20 ~ 0	F	4.3
0 ~ 20	F	4.4
20 ~ 40	F	4.6
40 ~ 60	F	4.8
60 ~ 80	F	5
-40 ~ -20	g	4.7
-20 ~ 0	g	4.7
0 ~ 20	g	4.8
20 ~ 40	g	4.9
40 ~ 60	g	5.1
60 ~ 80	g	5.4