S-LAL10 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.719994 n_e = 1.723408	V_d = 50.22 V_e = 49.96	n_F - n_C = 0.014336 n_F' - n_C' = 0.014479	Coloring: 0.33 - 0.38 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.40731352 C2 = 0.488358285 C3 = 1.39307348 C4 = 0.00686241143 C5 = 0.0250821397 C6 = 117.874653

Refraction index
n _2.3254	-----
n _1.9701	1.689351
n _1.5296	1.696140
n _1.06	1.703544
n _t	1.704430
n _s	1.708197
n _r	1.713243
n _C	1.715677
n _C'	1.716361
n _0.6328	1.717001
n _D	1.719867
n _d	1.719994
n _e	1.723408
n _F	1.730013
n _F'	1.730840
n _g	1.737949
n _h	1.744599
n _i	1.756067
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7845
P_C,A'	0.3389
P_d,C	0.3011
P_e,C	0.5392
P_g,d	1.2523
P_g,F	0.5535
P_h,g	0.4639
P_i,g	1.2638
P_C',t	0.8322
P_e,C'	0.4915
P_F',e	0.5184
P_i,F'	1.7596

transmittance: 10 mm
τ_0.32	0.01
τ_0.33	0.15
τ_0.34	0.42
τ_0.35	0.65
τ_0.36	0.8
τ_0.37	0.88
τ_0.38	0.933
τ_0.39	0.959
τ_0.4	0.972
τ_0.42	0.984
τ_0.44	0.988
τ_0.46	0.991
τ_0.48	0.993
τ_0.5	0.995
τ_0.55	0.997
τ_0.6	0.996
τ_0.65	0.996
τ_0.7	0.997
τ_0.8	0.997
τ_0.9	0.996
τ₁	0.996
τ_1.2	0.995
τ_1.4	0.992
τ_1.6	0.991
τ_1.8	0.984
τ₂	0.968
τ_2.2	0.917
τ_2.4	0.76

Poisson coef.: 0.288
Rigidity: 403 Pa*10⁸
Young module: 1039 Pa*10⁸
Knoop hardness: 620
Abrasion: 116

Climatic resistance: 2
Resistance to acids: 52
Phosphate resistance: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	68
100 ~ 300	80

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2.1
-20 ~ 0	t	2.2
0 ~ 20	t	2.2
20 ~ 40	t	2.3
40 ~ 60	t	2.3
60 ~ 80	t	2.4
-40 ~ -20	C'	2.5
-20 ~ 0	C'	2.6
0 ~ 20	C'	2.7
20 ~ 40	C'	2.7
40 ~ 60	C'	2.8
60 ~ 80	C'	2.9
-40 ~ -20		2.5
-20 ~ 0		2.6
0 ~ 20		2.7
20 ~ 40		2.8
40 ~ 60		2.8
60 ~ 80		2.9
-40 ~ -20	D	2.7
-20 ~ 0	D	2.8
0 ~ 20	D	2.9
20 ~ 40	D	2.9
40 ~ 60	D	3
60 ~ 80	D	3.1
-40 ~ -20	e	2.9
-20 ~ 0	e	3
0 ~ 20	e	3.1
20 ~ 40	e	3.2
40 ~ 60	e	3.3
60 ~ 80	e	3.3
-40 ~ -20	F	3.3
-20 ~ 0	F	3.4
0 ~ 20	F	3.5
20 ~ 40	F	3.6
40 ~ 60	F	3.8
60 ~ 80	F	3.9
-40 ~ -20	g	3.7
-20 ~ 0	g	3.9
0 ~ 20	g	4
20 ~ 40	g	4.1
40 ~ 60	g	4.3
60 ~ 80	g	4.4