S-LAL13 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.693500 n_e = 1.696606	V_d = 53.20 V_e = 52.96	n_F - n_C = 0.013034 n_F' - n_C' = 0.013151	Coloring: 0.31 - 0.38 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 0.980071267 C2 = 0.832904776 C3 = 1.28111995 C4 = 0.00389123698 C5 = 0.0189164592 C6 = 98.9052676

Refraction index
n _2.3254	-----
n _1.9701	1.663042
n _1.5296	1.670436
n _1.06	1.678071
n _t	1.678944
n _s	1.682575
n _r	1.687300
n _C	1.689547
n _C'	1.690176
n _0.6328	1.690763
n _D	1.693384
n _d	1.693500
n _e	1.696606
n _F	1.702581
n _F'	1.703327
n _g	1.709715
n _h	1.715661
n _i	1.725848
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8134
P_C,A'	0.3454
P_d,C	0.3033
P_e,C	0.5415
P_g,d	1.2439
P_g,F	0.5472
P_h,g	0.4562
P_i,g	1.2377
P_C',t	0.8617
P_e,C'	0.4933
P_F',e	0.5156
P_i,F'	1.7278

transmittance: 10 mm
τ_0.29	0.01
τ_0.3	0.03
τ_0.31	0.08
τ_0.32	0.19
τ_0.33	0.34
τ_0.34	0.52
τ_0.35	0.68
τ_0.36	0.8
τ_0.37	0.88
τ_0.38	0.932
τ_0.39	0.958
τ_0.4	0.972
τ_0.42	0.986
τ_0.44	0.99
τ_0.46	0.993
τ_0.48	0.995
τ_0.5	0.996
τ_0.55	0.997
τ_0.6	0.995
τ_0.65	0.995
τ_0.7	0.996
τ_0.8	0.997
τ_0.9	0.996
τ₁	0.995
τ_1.2	0.995
τ_1.4	0.99
τ_1.6	0.99
τ_1.8	0.981
τ₂	0.958
τ_2.2	0.88
τ_2.4	0.66

Poisson coef.: 0.29
Rigidity: 416 Pa*10⁸
Young module: 1073 Pa*10⁸
Knoop hardness: 650
Abrasion: 87

Climatic resistance: 1
Resistance to acids: 52
Phosphate resistance: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	57
100 ~ 300	72

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	4.6
-20 ~ 0	t	4.7
0 ~ 20	t	4.8
20 ~ 40	t	4.9
40 ~ 60	t	5
60 ~ 80	t	5.1
-40 ~ -20	C'	4.8
-20 ~ 0	C'	4.9
0 ~ 20	C'	5.1
20 ~ 40	C'	5.3
40 ~ 60	C'	5.4
60 ~ 80	C'	5.6
-40 ~ -20		4.8
-20 ~ 0		5
0 ~ 20		5.1
20 ~ 40		5.3
40 ~ 60		5.5
60 ~ 80		5.6
-40 ~ -20	D	4.9
-20 ~ 0	D	5.1
0 ~ 20	D	5.3
20 ~ 40	D	5.5
40 ~ 60	D	5.6
60 ~ 80	D	5.8
-40 ~ -20	e	5.1
-20 ~ 0	e	5.3
0 ~ 20	e	5.5
20 ~ 40	e	5.7
40 ~ 60	e	5.8
60 ~ 80	e	6
-40 ~ -20	F	5.5
-20 ~ 0	F	5.7
0 ~ 20	F	5.9
20 ~ 40	F	6.1
40 ~ 60	F	6.3
60 ~ 80	F	6.5
-40 ~ -20	g	5.9
-20 ~ 0	g	6.1
0 ~ 20	g	6.4
20 ~ 40	g	6.6
40 ~ 60	g	6.8
60 ~ 80	g	7